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driver core merge for 3.4-rc1

Browse Source 
Here's the big driver core merge for 3.4-rc1.
 
 Lots of various things here, sysfs fixes/tweaks (with the nlink breakage
 reverted), dynamic debugging updates, w1 drivers, hyperv driver updates,
 and a variety of other bits and pieces, full information in the
 shortlog.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 yrgAnj1Zan2QkoCnQIFJNAoxqNX9yAhd
 =biH6
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Merge tag 'driver-core-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches for 3.4-rc1 from Greg KH:
 "Here's the big driver core merge for 3.4-rc1.

  Lots of various things here, sysfs fixes/tweaks (with the nlink
  breakage reverted), dynamic debugging updates, w1 drivers, hyperv
  driver updates, and a variety of other bits and pieces, full
  information in the shortlog."

* tag 'driver-core-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (78 commits)
  Tools: hv: Support enumeration from all the pools
  Tools: hv: Fully support the new KVP verbs in the user level daemon
  Drivers: hv: Support the newly introduced KVP messages in the driver
  Drivers: hv: Add new message types to enhance KVP
  regulator: Support driver probe deferral
  Revert "sysfs: Kill nlink counting."
  uevent: send events in correct order according to seqnum (v3)
  driver core: minor comment formatting cleanups
  driver core: move the deferred probe pointer into the private area
  drivercore: Add driver probe deferral mechanism
  DS2781 Maxim Stand-Alone Fuel Gauge battery and w1 slave drivers
  w1_bq27000: Only one thread can access the bq27000 at a time.
  w1_bq27000 - remove w1_bq27000_write
  w1_bq27000: remove unnecessary NULL test.
  sysfs: Fix memory leak in sysfs_sd_setsecdata().
  intel_idle: Revert change of auto_demotion_disable_flags for Nehalem
  w1: Fix w1_bq27000
  driver-core: documentation: fix up Greg's email address
  powernow-k6: Really enable auto-loading
  powernow-k7: Fix CPU family number
  ...
This commit is contained in:
Linus Torvalds 2012-03-20 11:16:20 -07:00
commit 4a52246302
109 changed files with 3567 additions and 1004 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/ABI/removed/devfs
View File

@ -1,6 +1,6 @@
What: devfs
Date: July 2005 (scheduled), finally removed in kernel v2.6.18
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
devfs has been unmaintained for a number of years, has unfixable
races, contains a naming policy within the kernel that is

10
Documentation/ABI/stable/sysfs-driver-usb-usbtmc
View File

@ -1,7 +1,7 @@
What: /sys/bus/usb/drivers/usbtmc/devices/*/interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/devices/*/device_capabilities
Date: August 2008
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
These files show the various USB TMC capabilities as described
by the device itself. The full description of the bitfields
@ -15,7 +15,7 @@ Description:
What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_device_capabilities
Date: August 2008
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
These files show the various USB TMC capabilities as described
by the device itself. The full description of the bitfields
@ -29,7 +29,7 @@ Description:
What: /sys/bus/usb/drivers/usbtmc/devices/*/TermChar
Date: August 2008
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
This file is the TermChar value to be sent to the USB TMC
device as described by the document, "Universal Serial Bus Test
@ -42,7 +42,7 @@ Description:
What: /sys/bus/usb/drivers/usbtmc/devices/*/TermCharEnabled
Date: August 2008
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
This file determines if the TermChar is to be sent to the
device on every transaction or not. For more details about
@ -53,7 +53,7 @@ Description:
What: /sys/bus/usb/drivers/usbtmc/devices/*/auto_abort
Date: August 2008
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
This file determines if the the transaction of the USB TMC
device is to be automatically aborted if there is any error.

2
Documentation/ABI/testing/sysfs-class
View File

@ -1,6 +1,6 @@
What: /sys/class/
Date: Febuary 2006
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
The /sys/class directory will consist of a group of
subdirectories describing individual classes of devices

2
Documentation/ABI/testing/sysfs-devices
View File

@ -1,6 +1,6 @@
What: /sys/devices
Date: February 2006
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
The /sys/devices tree contains a snapshot of the
internal state of the kernel device tree. Devices will

58
Documentation/ABI/testing/sysfs-devices-soc Normal file
View File

@ -0,0 +1,58 @@
What: /sys/devices/socX
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
The /sys/devices/ directory contains a sub-directory for each
System-on-Chip (SoC) device on a running platform. Information
regarding each SoC can be obtained by reading sysfs files. This
functionality is only available if implemented by the platform.
The directory created for each SoC will also house information
about devices which are commonly contained in /sys/devices/platform.
It has been agreed that if an SoC device exists, its supported
devices would be better suited to appear as children of that SoC.
What: /sys/devices/socX/machine
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
Read-only attribute common to all SoCs. Contains the SoC machine
name (e.g. Ux500).
What: /sys/devices/socX/family
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
Read-only attribute common to all SoCs. Contains SoC family name
(e.g. DB8500).
What: /sys/devices/socX/soc_id
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
Read-only attribute supported by most SoCs. In the case of
ST-Ericsson's chips this contains the SoC serial number.
What: /sys/devices/socX/revision
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
Read-only attribute supported by most SoCs. Contains the SoC's
manufacturing revision number.
What: /sys/devices/socX/process
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
Read-only attribute supported ST-Ericsson's silicon. Contains the
the process by which the silicon chip was manufactured.
What: /sys/bus/soc
Date: January 2012
contact: Lee Jones <lee.jones@linaro.org>
Description:
The /sys/bus/soc/ directory contains the usual sub-folders
expected under most buses. /sys/bus/soc/devices is of particular
interest, as it contains a symlink for each SoC device found on
the system. Each symlink points back into the aforementioned
/sys/devices/socX devices.

2
Documentation/ABI/testing/sysfs-driver-samsung-laptop
View File

@ -1,7 +1,7 @@
What: /sys/devices/platform/samsung/performance_level
Date: January 1, 2010
KernelVersion: 2.6.33
Contact: Greg Kroah-Hartman <gregkh@suse.de>
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description: Some Samsung laptops have different "performance levels"
that are can be modified by a function key, and by this
sysfs file. These values don't always make a whole lot

30
Documentation/dynamic-debug-howto.txt
View File

@ -12,7 +12,7 @@ dynamically enabled per-callsite.
Dynamic debug has even more useful features:
* Simple query language allows turning on and off debugging statements by
matching any combination of:
matching any combination of 0 or 1 of:
- source filename
- function name
@ -79,31 +79,24 @@ Command Language Reference
==========================
At the lexical level, a command comprises a sequence of words separated
by whitespace characters. Note that newlines are treated as word
separators and do *not* end a command or allow multiple commands to
be done together. So these are all equivalent:
by spaces or tabs. So these are all equivalent:
nullarbor:~ # echo -c 'file svcsock.c line 1603 +p' >
<debugfs>/dynamic_debug/control
nullarbor:~ # echo -c ' file svcsock.c line 1603 +p ' >
<debugfs>/dynamic_debug/control
nullarbor:~ # echo -c 'file svcsock.c\nline 1603 +p' >
<debugfs>/dynamic_debug/control
nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
<debugfs>/dynamic_debug/control
Commands are bounded by a write() system call. If you want to do
multiple commands you need to do a separate "echo" for each, like:
Command submissions are bounded by a write() system call.
Multiple commands can be written together, separated by ';' or '\n'.
nullarbor:~ # echo 'file svcsock.c line 1603 +p' > /proc/dprintk ;\
> echo 'file svcsock.c line 1563 +p' > /proc/dprintk
~# echo "func pnpacpi_get_resources +p; func pnp_assign_mem +p" \
> <debugfs>/dynamic_debug/control
or even like:
If your query set is big, you can batch them too:
nullarbor:~ # (
> echo 'file svcsock.c line 1603 +p' ;\
> echo 'file svcsock.c line 1563 +p' ;\
> ) > /proc/dprintk
~# cat query-batch-file > <debugfs>/dynamic_debug/control
At the syntactical level, a command comprises a sequence of match
specifications, followed by a flags change specification.
@ -144,11 +137,12 @@ func
func svc_tcp_accept
file
The given string is compared against either the full
pathname or the basename of the source file of each
callsite. Examples:
The given string is compared against either the full pathname, the
src-root relative pathname, or the basename of the source file of
each callsite. Examples:
file svcsock.c
file kernel/freezer.c
file /usr/src/packages/BUILD/sgi-enhancednfs-1.4/default/net/sunrpc/svcsock.c
module

5
Documentation/filesystems/debugfs.txt
View File

@ -14,7 +14,10 @@ Debugfs is typically mounted with a command like:
mount -t debugfs none /sys/kernel/debug
(Or an equivalent /etc/fstab line).
(Or an equivalent /etc/fstab line).
The debugfs root directory is accessible by anyone by default. To
restrict access to the tree the "uid", "gid" and "mode" mount
options can be used.
Note that the debugfs API is exported GPL-only to modules.

2
Documentation/ioctl/ioctl-number.txt
View File

@ -189,7 +189,7 @@ Code Seq#(hex) Include File Comments
'Y' all linux/cyclades.h
'Z' 14-15 drivers/message/fusion/mptctl.h
'[' 00-07 linux/usb/tmc.h USB Test and Measurement Devices
<mailto:gregkh@suse.de>
<mailto:gregkh@linuxfoundation.org>
'a' all linux/atm*.h, linux/sonet.h ATM on linux
<http://lrcwww.epfl.ch/>
'b' 00-FF conflict! bit3 vme host bridge

2
Documentation/ko_KR/HOWTO
View File

@ -354,7 +354,7 @@ Andrew Morton에 의해 배포된 실험적인 커널 패치들이다. Andrew는
git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git
quilt trees:
- USB, PCI, Driver Core, and I2C, Greg Kroah-Hartman < gregkh@suse.de>
- USB, PCI, Driver Core, and I2C, Greg Kroah-Hartman < gregkh@linuxfoundation.org>
kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
- x86-64, partly i386, Andi Kleen < ak@suse.de>
ftp.firstfloor.org:/pub/ak/x86_64/quilt/

2
Documentation/kobject.txt
View File

@ -1,6 +1,6 @@
Everything you never wanted to know about kobjects, ksets, and ktypes
Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on an original article by Jon Corbet for lwn.net written October 1,
2003 and located at http://lwn.net/Articles/51437/

2
Documentation/zh_CN/HOWTO
View File

@ -316,7 +316,7 @@ linux-kernel邮件列表中提供反馈，告诉大家你遇到了问题还是
git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git
使用quilt管理的补丁集：
- USB, PCI, 驱动程序核心和I2C, Greg Kroah-Hartman <gregkh@suse.de>
- USB, PCI, 驱动程序核心和I2C, Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
- x86-64, 部分i386, Andi Kleen <ak@suse.de>
ftp.firstfloor.org:/pub/ak/x86_64/quilt/

3
arch/x86/Kconfig
View File

@ -180,6 +180,9 @@ config ARCH_HAS_DEFAULT_IDLE
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
config ARCH_HAS_CPU_AUTOPROBE
def_bool y
config HAVE_SETUP_PER_CPU_AREA
def_bool y

12
arch/x86/crypto/aesni-intel_glue.c
View File

@ -28,6 +28,7 @@
#include <crypto/aes.h>
#include <crypto/cryptd.h>
#include <crypto/ctr.h>
#include <asm/cpu_device_id.h>
#include <asm/i387.h>
#include <asm/aes.h>
#include <crypto/scatterwalk.h>
@ -1253,14 +1254,19 @@ static struct crypto_alg __rfc4106_alg = {
};
#endif
static const struct x86_cpu_id aesni_cpu_id[] = {
X86_FEATURE_MATCH(X86_FEATURE_AES),
{}
};
MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id);
static int __init aesni_init(void)
{
int err;
if (!cpu_has_aes) {
printk(KERN_INFO "Intel AES-NI instructions are not detected.\n");
if (!x86_match_cpu(aesni_cpu_id))
return -ENODEV;
}
if ((err = crypto_fpu_init()))
goto fpu_err;

11
arch/x86/crypto/crc32c-intel.c
View File

@ -31,6 +31,7 @@
#include <crypto/internal/hash.h>
#include <asm/cpufeature.h>
#include <asm/cpu_device_id.h>
#define CHKSUM_BLOCK_SIZE 1
#define CHKSUM_DIGEST_SIZE 4
@ -173,13 +174,17 @@ static struct shash_alg alg = {
}
};
static const struct x86_cpu_id crc32c_cpu_id[] = {
X86_FEATURE_MATCH(X86_FEATURE_XMM4_2),
{}
};
MODULE_DEVICE_TABLE(x86cpu, crc32c_cpu_id);
static int __init crc32c_intel_mod_init(void)
{
if (cpu_has_xmm4_2)
return crypto_register_shash(&alg);
else
if (!x86_match_cpu(crc32c_cpu_id))
return -ENODEV;
return crypto_register_shash(&alg);
}
static void __exit crc32c_intel_mod_fini(void)

12
arch/x86/crypto/ghash-clmulni-intel_glue.c
View File

@ -20,6 +20,7 @@
#include <crypto/gf128mul.h>
#include <crypto/internal/hash.h>
#include <asm/i387.h>
#include <asm/cpu_device_id.h>
#define GHASH_BLOCK_SIZE 16
#define GHASH_DIGEST_SIZE 16
@ -294,15 +295,18 @@ static struct ahash_alg ghash_async_alg = {
},
};
static const struct x86_cpu_id pcmul_cpu_id[] = {
X86_FEATURE_MATCH(X86_FEATURE_PCLMULQDQ), /* Pickle-Mickle-Duck */
{}
};
MODULE_DEVICE_TABLE(x86cpu, pcmul_cpu_id);
static int __init ghash_pclmulqdqni_mod_init(void)
{
int err;
if (!cpu_has_pclmulqdq) {
printk(KERN_INFO "Intel PCLMULQDQ-NI instructions are not"
" detected.\n");
if (!x86_match_cpu(pcmul_cpu_id))
return -ENODEV;
}
err = crypto_register_shash(&ghash_alg);
if (err)

13
arch/x86/include/asm/cpu_device_id.h Normal file
View File

@ -0,0 +1,13 @@
#ifndef _CPU_DEVICE_ID
#define _CPU_DEVICE_ID 1
/*
* Declare drivers belonging to specific x86 CPUs
* Similar in spirit to pci_device_id and related PCI functions
*/
#include <linux/mod_devicetable.h>
extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);
#endif

1
arch/x86/include/asm/cpufeature.h
View File

@ -177,6 +177,7 @@
#define X86_FEATURE_PLN (7*32+ 5) /* Intel Power Limit Notification */
#define X86_FEATURE_PTS (7*32+ 6) /* Intel Package Thermal Status */
#define X86_FEATURE_DTS (7*32+ 7) /* Digital Thermal Sensor */
#define X86_FEATURE_HW_PSTATE (7*32+ 8) /* AMD HW-PState */
/* Virtualization flags: Linux defined, word 8 */
#define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */

1
arch/x86/kernel/cpu/Makefile
View File

@ -16,6 +16,7 @@ obj-y := intel_cacheinfo.o scattered.o topology.o
obj-y += proc.o capflags.o powerflags.o common.o
obj-y += vmware.o hypervisor.o sched.o mshyperv.o
obj-y += rdrand.o
obj-y += match.o
obj-$(CONFIG_X86_32) += bugs.o
obj-$(CONFIG_X86_64) += bugs_64.o

91
arch/x86/kernel/cpu/match.c Normal file
View File

@ -0,0 +1,91 @@
#include <asm/cpu_device_id.h>
#include <asm/processor.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/slab.h>
/**
* x86_match_cpu - match current CPU again an array of x86_cpu_ids
* @match: Pointer to array of x86_cpu_ids. Last entry terminated with
* {}.
*
* Return the entry if the current CPU matches the entries in the
* passed x86_cpu_id match table. Otherwise NULL. The match table
* contains vendor (X86_VENDOR_*), family, model and feature bits or
* respective wildcard entries.
*
* A typical table entry would be to match a specific CPU
* { X86_VENDOR_INTEL, 6, 0x12 }
* or to match a specific CPU feature
* { X86_FEATURE_MATCH(X86_FEATURE_FOOBAR) }
*
* Fields can be wildcarded with %X86_VENDOR_ANY, %X86_FAMILY_ANY,
* %X86_MODEL_ANY, %X86_FEATURE_ANY or 0 (except for vendor)
*
* Arrays used to match for this should also be declared using
* MODULE_DEVICE_TABLE(x86_cpu, ...)
*
* This always matches against the boot cpu, assuming models and features are
* consistent over all CPUs.
*/
const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
{
const struct x86_cpu_id *m;
struct cpuinfo_x86 *c = &boot_cpu_data;
for (m = match; m->vendor | m->family | m->model | m->feature; m++) {
if (m->vendor != X86_VENDOR_ANY && c->x86_vendor != m->vendor)
continue;
if (m->family != X86_FAMILY_ANY && c->x86 != m->family)
continue;
if (m->model != X86_MODEL_ANY && c->x86_model != m->model)
continue;
if (m->feature != X86_FEATURE_ANY && !cpu_has(c, m->feature))
continue;
return m;
}
return NULL;
}
EXPORT_SYMBOL(x86_match_cpu);
ssize_t arch_print_cpu_modalias(struct device *dev,
struct device_attribute *attr,
char *bufptr)
{
int size = PAGE_SIZE;
int i, n;
char *buf = bufptr;
n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:"
"model:%04X:feature:",
boot_cpu_data.x86_vendor,
boot_cpu_data.x86,
boot_cpu_data.x86_model);
size -= n;
buf += n;
size -= 1;
for (i = 0; i < NCAPINTS*32; i++) {
if (boot_cpu_has(i)) {
n = snprintf(buf, size, ",%04X", i);
if (n >= size) {
WARN(1, "x86 features overflow page\n");
break;
}
size -= n;
buf += n;
}
}
*buf++ = '\n';
return buf - bufptr;
}
int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
{
char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (buf) {
arch_print_cpu_modalias(NULL, NULL, buf);
add_uevent_var(env, "MODALIAS=%s", buf);
kfree(buf);
}
return 0;
}

1
arch/x86/kernel/cpu/scattered.c
View File

@ -40,6 +40,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
{ X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 },
{ X86_FEATURE_XSAVEOPT, CR_EAX, 0, 0x0000000d, 1 },
{ X86_FEATURE_CPB, CR_EDX, 9, 0x80000007, 0 },
{ X86_FEATURE_HW_PSTATE, CR_EDX, 7, 0x80000007, 0 },
{ X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a, 0 },
{ X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a, 0 },
{ X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a, 0 },

15
arch/x86/kernel/microcode_core.c
View File

@ -86,6 +86,7 @@
#include <asm/microcode.h>
#include <asm/processor.h>
#include <asm/cpu_device_id.h>
MODULE_DESCRIPTION("Microcode Update Driver");
MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
@ -504,6 +505,20 @@ static struct notifier_block __refdata mc_cpu_notifier = {
.notifier_call = mc_cpu_callback,
};
#ifdef MODULE
/* Autoload on Intel and AMD systems */
static const struct x86_cpu_id microcode_id[] = {
#ifdef CONFIG_MICROCODE_INTEL
{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, },
#endif
#ifdef CONFIG_MICROCODE_AMD
{ X86_VENDOR_AMD, X86_FAMILY_ANY, X86_MODEL_ANY, },
#endif
{}
};
MODULE_DEVICE_TABLE(x86cpu, microcode_id);
#endif
static int __init microcode_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);

1
drivers/acpi/processor_driver.c
View File

@ -474,6 +474,7 @@ static __ref int acpi_processor_start(struct acpi_processor *pr)
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_load_module(pr);
#endif
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);

22
drivers/acpi/processor_perflib.c
View File

@ -240,6 +240,28 @@ void acpi_processor_ppc_exit(void)
acpi_processor_ppc_status &= ~PPC_REGISTERED;
}
/*
* Do a quick check if the systems looks like it should use ACPI
* cpufreq. We look at a _PCT method being available, but don't
* do a whole lot of sanity checks.
*/
void acpi_processor_load_module(struct acpi_processor *pr)
{
static int requested;
acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!arch_has_acpi_pdc() || requested)
return;
status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
if (!ACPI_FAILURE(status)) {
printk(KERN_INFO PREFIX "Requesting acpi_cpufreq\n");
request_module_nowait("acpi_cpufreq");
requested = 1;
}
kfree(buffer.pointer);
}
static int acpi_processor_get_performance_control(struct acpi_processor *pr)
{
int result = 0;

3
drivers/base/Kconfig
View File

@ -176,6 +176,9 @@ config GENERIC_CPU_DEVICES
bool
default n
config SOC_BUS
bool
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER

1
drivers/base/Makefile
View File

@ -19,6 +19,7 @@ obj-$(CONFIG_MODULES) += module.o
endif
obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o
obj-$(CONFIG_REGMAP) += regmap/
obj-$(CONFIG_SOC_BUS) += soc.o
ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG

6
drivers/base/base.h
View File

@ -59,6 +59,10 @@ struct driver_private {
* @knode_parent - node in sibling list
* @knode_driver - node in driver list
* @knode_bus - node in bus list
* @deferred_probe - entry in deferred_probe_list which is used to retry the
* binding of drivers which were unable to get all the resources needed by
* the device; typically because it depends on another driver getting
* probed first.
* @driver_data - private pointer for driver specific info. Will turn into a
* list soon.
* @device - pointer back to the struct class that this structure is
@ -71,6 +75,7 @@ struct device_private {
struct klist_node knode_parent;
struct klist_node knode_driver;
struct klist_node knode_bus;
struct list_head deferred_probe;
void *driver_data;
struct device *device;
};
@ -105,6 +110,7 @@ extern void bus_remove_driver(struct device_driver *drv);
extern void driver_detach(struct device_driver *drv);
extern int driver_probe_device(struct device_driver *drv, struct device *dev);
extern void driver_deferred_probe_del(struct device *dev);
static inline int driver_match_device(struct device_driver *drv,
struct device *dev)
{

6
drivers/base/bus.c
View File

@ -1194,13 +1194,15 @@ EXPORT_SYMBOL_GPL(subsys_interface_register);
void subsys_interface_unregister(struct subsys_interface *sif)
{
struct bus_type *subsys = sif->subsys;
struct bus_type *subsys;
struct subsys_dev_iter iter;
struct device *dev;
if (!sif)
if (!sif || !sif->subsys)
return;
subsys = sif->subsys;
mutex_lock(&subsys->p->mutex);
list_del_init(&sif->node);
if (sif->remove_dev) {

2
drivers/base/core.c
View File

@ -921,6 +921,7 @@ int device_private_init(struct device *dev)
dev->p->device = dev;
klist_init(&dev->p->klist_children, klist_children_get,
klist_children_put);
INIT_LIST_HEAD(&dev->p->deferred_probe);
return 0;
}
@ -1188,6 +1189,7 @@ void device_del(struct device *dev)
device_remove_file(dev, &uevent_attr);
device_remove_attrs(dev);
bus_remove_device(dev);
driver_deferred_probe_del(dev);
/*
* Some platform devices are driven without driver attached

11
drivers/base/cpu.c
View File

@ -11,6 +11,7 @@
#include <linux/device.h>
#include <linux/node.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/percpu.h>
#include "base.h"
@ -244,6 +245,9 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
cpu->dev.id = num;
cpu->dev.bus = &cpu_subsys;
cpu->dev.release = cpu_device_release;
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
cpu->dev.bus->uevent = arch_cpu_uevent;
#endif
error = device_register(&cpu->dev);
if (!error && cpu->hotpluggable)
register_cpu_control(cpu);
@ -268,6 +272,10 @@ struct device *get_cpu_device(unsigned cpu)
}
EXPORT_SYMBOL_GPL(get_cpu_device);
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
static DEVICE_ATTR(modalias, 0444, arch_print_cpu_modalias, NULL);
#endif
static struct attribute *cpu_root_attrs[] = {
#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
&dev_attr_probe.attr,
@ -278,6 +286,9 @@ static struct attribute *cpu_root_attrs[] = {
&cpu_attrs[2].attr.attr,
&dev_attr_kernel_max.attr,
&dev_attr_offline.attr,
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
&dev_attr_modalias.attr,
#endif
NULL
};

148
drivers/base/dd.c
View File

@ -28,6 +28,141 @@
#include "base.h"
#include "power/power.h"
/*
* Deferred Probe infrastructure.
*
* Sometimes driver probe order matters, but the kernel doesn't always have
* dependency information which means some drivers will get probed before a
* resource it depends on is available. For example, an SDHCI driver may
* first need a GPIO line from an i2c GPIO controller before it can be
* initialized. If a required resource is not available yet, a driver can
* request probing to be deferred by returning -EPROBE_DEFER from its probe hook
*
* Deferred probe maintains two lists of devices, a pending list and an active
* list. A driver returning -EPROBE_DEFER causes the device to be added to the
* pending list. A successful driver probe will trigger moving all devices
* from the pending to the active list so that the workqueue will eventually
* retry them.
*
* The deferred_probe_mutex must be held any time the deferred_probe_*_list
* of the (struct device*)->p->deferred_probe pointers are manipulated
*/
static DEFINE_MUTEX(deferred_probe_mutex);
static LIST_HEAD(deferred_probe_pending_list);
static LIST_HEAD(deferred_probe_active_list);
static struct workqueue_struct *deferred_wq;
/**
* deferred_probe_work_func() - Retry probing devices in the active list.
*/
static void deferred_probe_work_func(struct work_struct *work)
{
struct device *dev;
struct device_private *private;
/*
* This block processes every device in the deferred 'active' list.
* Each device is removed from the active list and passed to
* bus_probe_device() to re-attempt the probe. The loop continues
* until every device in the active list is removed and retried.
*
* Note: Once the device is removed from the list and the mutex is
* released, it is possible for the device get freed by another thread
* and cause a illegal pointer dereference. This code uses
* get/put_device() to ensure the device structure cannot disappear
* from under our feet.
*/
mutex_lock(&deferred_probe_mutex);
while (!list_empty(&deferred_probe_active_list)) {
private = list_first_entry(&deferred_probe_active_list,
typeof(*dev->p), deferred_probe);
dev = private->device;
list_del_init(&private->deferred_probe);
get_device(dev);
/*
* Drop the mutex while probing each device; the probe path may
* manipulate the deferred list
*/
mutex_unlock(&deferred_probe_mutex);
dev_dbg(dev, "Retrying from deferred list\n");
bus_probe_device(dev);
mutex_lock(&deferred_probe_mutex);
put_device(dev);
}
mutex_unlock(&deferred_probe_mutex);
}
static DECLARE_WORK(deferred_probe_work, deferred_probe_work_func);
static void driver_deferred_probe_add(struct device *dev)
{
mutex_lock(&deferred_probe_mutex);
if (list_empty(&dev->p->deferred_probe)) {
dev_dbg(dev, "Added to deferred list\n");
list_add(&dev->p->deferred_probe, &deferred_probe_pending_list);
}
mutex_unlock(&deferred_probe_mutex);
}
void driver_deferred_probe_del(struct device *dev)
{
mutex_lock(&deferred_probe_mutex);
if (!list_empty(&dev->p->deferred_probe)) {
dev_dbg(dev, "Removed from deferred list\n");
list_del_init(&dev->p->deferred_probe);
}
mutex_unlock(&deferred_probe_mutex);
}
static bool driver_deferred_probe_enable = false;
/**
* driver_deferred_probe_trigger() - Kick off re-probing deferred devices
*
* This functions moves all devices from the pending list to the active
* list and schedules the deferred probe workqueue to process them. It
* should be called anytime a driver is successfully bound to a device.
*/
static void driver_deferred_probe_trigger(void)
{
if (!driver_deferred_probe_enable)
return;
/*
* A successful probe means that all the devices in the pending list
* should be triggered to be reprobed. Move all the deferred devices
* into the active list so they can be retried by the workqueue
*/
mutex_lock(&deferred_probe_mutex);
list_splice_tail_init(&deferred_probe_pending_list,
&deferred_probe_active_list);
mutex_unlock(&deferred_probe_mutex);
/*
* Kick the re-probe thread. It may already be scheduled, but it is
* safe to kick it again.
*/
queue_work(deferred_wq, &deferred_probe_work);
}
/**
* deferred_probe_initcall() - Enable probing of deferred devices
*
* We don't want to get in the way when the bulk of drivers are getting probed.
* Instead, this initcall makes sure that deferred probing is delayed until
* late_initcall time.
*/
static int deferred_probe_initcall(void)
{
deferred_wq = create_singlethread_workqueue("deferwq");
if (WARN_ON(!deferred_wq))
return -ENOMEM;
driver_deferred_probe_enable = true;
driver_deferred_probe_trigger();
return 0;
}
late_initcall(deferred_probe_initcall);
static void driver_bound(struct device *dev)
{
@ -42,6 +177,13 @@ static void driver_bound(struct device *dev)
klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
/*
* Make sure the device is no longer in one of the deferred lists and
* kick off retrying all pending devices
*/
driver_deferred_probe_del(dev);
driver_deferred_probe_trigger();
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_BOUND_DRIVER, dev);
@ -142,7 +284,11 @@ static int really_probe(struct device *dev, struct device_driver *drv)
driver_sysfs_remove(dev);
dev->driver = NULL;
if (ret != -ENODEV && ret != -ENXIO) {
if (ret == -EPROBE_DEFER) {
/* Driver requested deferred probing */
dev_info(dev, "Driver %s requests probe deferral\n", drv->name);
driver_deferred_probe_add(dev);
} else if (ret != -ENODEV && ret != -ENXIO) {
/* driver matched but the probe failed */
printk(KERN_WARNING
"%s: probe of %s failed with error %d\n",

35
drivers/base/driver.c
View File

@ -153,34 +153,6 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
}
EXPORT_SYMBOL_GPL(driver_add_kobj);
/**
* get_driver - increment driver reference count.
* @drv: driver.
*/
struct device_driver *get_driver(struct device_driver *drv)
{
if (drv) {
struct driver_private *priv;
struct kobject *kobj;
kobj = kobject_get(&drv->p->kobj);
priv = to_driver(kobj);
return priv->driver;
}
return NULL;
}
EXPORT_SYMBOL_GPL(get_driver);
/**
* put_driver - decrement driver's refcount.
* @drv: driver.
*/
void put_driver(struct device_driver *drv)
{
kobject_put(&drv->p->kobj);
}
EXPORT_SYMBOL_GPL(put_driver);
static int driver_add_groups(struct device_driver *drv,
const struct attribute_group **groups)
{
@ -234,7 +206,6 @@ int driver_register(struct device_driver *drv)
other = driver_find(drv->name, drv->bus);
if (other) {
put_driver(other);
printk(KERN_ERR "Error: Driver '%s' is already registered, "
"aborting...\n", drv->name);
return -EBUSY;
@ -275,7 +246,9 @@ EXPORT_SYMBOL_GPL(driver_unregister);
* Call kset_find_obj() to iterate over list of drivers on
* a bus to find driver by name. Return driver if found.
*
* Note that kset_find_obj increments driver's reference count.
* This routine provides no locking to prevent the driver it returns
* from being unregistered or unloaded while the caller is using it.
* The caller is responsible for preventing this.
*/
struct device_driver *driver_find(const char *name, struct bus_type *bus)
{
@ -283,6 +256,8 @@ struct device_driver *driver_find(const char *name, struct bus_type *bus)
struct driver_private *priv;
if (k) {
/* Drop reference added by kset_find_obj() */
kobject_put(k);
priv = to_driver(k);
return priv->driver;
}

183
drivers/base/soc.c Normal file
View File

@ -0,0 +1,183 @@
/*
* Copyright (C) ST-Ericsson SA 2011
*
* Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson.
* License terms: GNU General Public License (GPL), version 2
*/
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/idr.h>
#include <linux/spinlock.h>
#include <linux/sys_soc.h>
#include <linux/err.h>
static DEFINE_IDR(soc_ida);
static DEFINE_SPINLOCK(soc_lock);
static ssize_t soc_info_get(struct device *dev,
struct device_attribute *attr,
char *buf);
struct soc_device {
struct device dev;
struct soc_device_attribute *attr;
int soc_dev_num;
};
static struct bus_type soc_bus_type = {
.name = "soc",
};
static DEVICE_ATTR(machine, S_IRUGO, soc_info_get, NULL);
static DEVICE_ATTR(family, S_IRUGO, soc_info_get, NULL);
static DEVICE_ATTR(soc_id, S_IRUGO, soc_info_get, NULL);
static DEVICE_ATTR(revision, S_IRUGO, soc_info_get, NULL);
struct device *soc_device_to_device(struct soc_device *soc_dev)
{
return &soc_dev->dev;
}
static mode_t soc_attribute_mode(struct kobject *kobj,
struct attribute *attr,
int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
if ((attr == &dev_attr_machine.attr)
&& (soc_dev->attr->machine != NULL))
return attr->mode;
if ((attr == &dev_attr_family.attr)
&& (soc_dev->attr->family != NULL))
return attr->mode;
if ((attr == &dev_attr_revision.attr)
&& (soc_dev->attr->revision != NULL))
return attr->mode;
if ((attr == &dev_attr_soc_id.attr)
&& (soc_dev->attr->soc_id != NULL))
return attr->mode;
/* Unknown or unfilled attribute. */
return 0;
}
static ssize_t soc_info_get(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
if (attr == &dev_attr_machine)
return sprintf(buf, "%s\n", soc_dev->attr->machine);
if (attr == &dev_attr_family)
return sprintf(buf, "%s\n", soc_dev->attr->family);
if (attr == &dev_attr_revision)
return sprintf(buf, "%s\n", soc_dev->attr->revision);
if (attr == &dev_attr_soc_id)
return sprintf(buf, "%s\n", soc_dev->attr->soc_id);
return -EINVAL;
}
static struct attribute *soc_attr[] = {
&dev_attr_machine.attr,
&dev_attr_family.attr,
&dev_attr_soc_id.attr,
&dev_attr_revision.attr,
NULL,
};
static const struct attribute_group soc_attr_group = {
.attrs = soc_attr,
.is_visible = soc_attribute_mode,
};
static const struct attribute_group *soc_attr_groups[] = {
&soc_attr_group,
NULL,
};
static void soc_release(struct device *dev)
{
struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
kfree(soc_dev);
}
struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr)
{
struct soc_device *soc_dev;
int ret;
soc_dev = kzalloc(sizeof(*soc_dev), GFP_KERNEL);
if (!soc_dev) {
ret = -ENOMEM;
goto out1;
}
/* Fetch a unique (reclaimable) SOC ID. */
do {
if (!ida_pre_get(&soc_ida, GFP_KERNEL)) {
ret = -ENOMEM;
goto out2;
}
spin_lock(&soc_lock);
ret = ida_get_new(&soc_ida, &soc_dev->soc_dev_num);
spin_unlock(&soc_lock);
} while (ret == -EAGAIN);
if (ret)
goto out2;
soc_dev->attr = soc_dev_attr;
soc_dev->dev.bus = &soc_bus_type;
soc_dev->dev.groups = soc_attr_groups;
soc_dev->dev.release = soc_release;
dev_set_name(&soc_dev->dev, "soc%d", soc_dev->soc_dev_num);
ret = device_register(&soc_dev->dev);
if (ret)
goto out3;
return soc_dev;
out3:
ida_remove(&soc_ida, soc_dev->soc_dev_num);
out2:
kfree(soc_dev);
out1:
return ERR_PTR(ret);
}
/* Ensure soc_dev->attr is freed prior to calling soc_device_unregister. */
void soc_device_unregister(struct soc_device *soc_dev)
{
ida_remove(&soc_ida, soc_dev->soc_dev_num);
device_unregister(&soc_dev->dev);
}
static int __init soc_bus_register(void)
{
spin_lock_init(&soc_lock);
return bus_register(&soc_bus_type);
}
core_initcall(soc_bus_register);
static void __exit soc_bus_unregister(void)
{
ida_destroy(&soc_ida);
bus_unregister(&soc_bus_type);
}
module_exit(soc_bus_unregister);

8
drivers/cpufreq/cpufreq-nforce2.c
View File

@ -385,6 +385,14 @@ static struct cpufreq_driver nforce2_driver = {
.owner = THIS_MODULE,
};
#ifdef MODULE
static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = {
{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2 },
{}
};
MODULE_DEVICE_TABLE(pci, nforce2_ids);
#endif
/**
* nforce2_detect_chipset - detect the Southbridge which contains FSB PLL logic
*

20
drivers/cpufreq/e_powersaver.c
View File

@ -16,6 +16,7 @@
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/cpu_device_id.h>
#include <asm/msr.h>
#include <asm/tsc.h>
@ -437,18 +438,19 @@ static struct cpufreq_driver eps_driver = {
.attr = eps_attr,
};
/* This driver will work only on Centaur C7 processors with
* Enhanced SpeedStep/PowerSaver registers */
static const struct x86_cpu_id eps_cpu_id[] = {
{ X86_VENDOR_CENTAUR, 6, X86_MODEL_ANY, X86_FEATURE_EST },
{}
};
MODULE_DEVICE_TABLE(x86cpu, eps_cpu_id);
static int __init eps_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
/* This driver will work only on Centaur C7 processors with
* Enhanced SpeedStep/PowerSaver registers */
if (c->x86_vendor != X86_VENDOR_CENTAUR
|| c->x86 != 6 || c->x86_model < 10)
if (!x86_match_cpu(eps_cpu_id) || boot_cpu_data.x86_model < 10)
return -ENODEV;
if (!cpu_has(c, X86_FEATURE_EST))
return -ENODEV;
if (cpufreq_register_driver(&eps_driver))
return -EINVAL;
return 0;

14
drivers/cpufreq/elanfreq.c
View File

@ -23,6 +23,7 @@
#include <linux/delay.h>
#include <linux/cpufreq.h>
#include <asm/cpu_device_id.h>
#include <asm/msr.h>
#include <linux/timex.h>
#include <linux/io.h>
@ -277,17 +278,16 @@ static struct cpufreq_driver elanfreq_driver = {
.attr = elanfreq_attr,
};
static const struct x86_cpu_id elan_id[] = {
{ X86_VENDOR_AMD, 4, 10, },
{}
};
MODULE_DEVICE_TABLE(x86cpu, elan_id);
static int __init elanfreq_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
/* Test if we have the right hardware */
if ((c->x86_vendor != X86_VENDOR_AMD) ||
(c->x86 != 4) || (c->x86_model != 10)) {
printk(KERN_INFO "elanfreq: error: no Elan processor found!\n");
if (!x86_match_cpu(elan_id))
return -ENODEV;
}
return cpufreq_register_driver(&elanfreq_driver);
}

9
drivers/cpufreq/gx-suspmod.c
View File

@ -82,6 +82,7 @@
#include <linux/errno.h>
#include <linux/slab.h>
#include <asm/cpu_device_id.h>
#include <asm/processor-cyrix.h>
/* PCI config registers, all at F0 */
@ -171,6 +172,7 @@ static struct pci_device_id gx_chipset_tbl[] __initdata = {
{ PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, gx_chipset_tbl);
static void gx_write_byte(int reg, int value)
{
@ -185,13 +187,6 @@ static __init struct pci_dev *gx_detect_chipset(void)
{
struct pci_dev *gx_pci = NULL;
/* check if CPU is a MediaGX or a Geode. */
if ((boot_cpu_data.x86_vendor != X86_VENDOR_NSC) &&
(boot_cpu_data.x86_vendor != X86_VENDOR_CYRIX)) {
pr_debug("error: no MediaGX/Geode processor found!\n");
return NULL;
}
/* detect which companion chip is used */
for_each_pci_dev(gx_pci) {
if ((pci_match_id(gx_chipset_tbl, gx_pci)) != NULL)

8
drivers/cpufreq/longhaul.c
View File

@ -35,6 +35,7 @@
#include <linux/acpi.h>
#include <asm/msr.h>
#include <asm/cpu_device_id.h>
#include <acpi/processor.h>
#include "longhaul.h"
@ -951,12 +952,17 @@ static struct cpufreq_driver longhaul_driver = {
.attr = longhaul_attr,
};
static const struct x86_cpu_id longhaul_id[] = {
{ X86_VENDOR_CENTAUR, 6 },
{}
};
MODULE_DEVICE_TABLE(x86cpu, longhaul_id);
static int __init longhaul_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6)
if (!x86_match_cpu(longhaul_id))
return -ENODEV;
#ifdef CONFIG_SMP

13
drivers/cpufreq/longrun.c
View File

@ -14,6 +14,7 @@
#include <asm/msr.h>
#include <asm/processor.h>
#include <asm/cpu_device_id.h>
static struct cpufreq_driver longrun_driver;
@ -288,6 +289,12 @@ static struct cpufreq_driver longrun_driver = {
.owner = THIS_MODULE,
};
static const struct x86_cpu_id longrun_ids[] = {
{ X86_VENDOR_TRANSMETA, X86_FAMILY_ANY, X86_MODEL_ANY,
X86_FEATURE_LONGRUN },
{}
};
MODULE_DEVICE_TABLE(x86cpu, longrun_ids);
/**
* longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver
@ -296,12 +303,8 @@ static struct cpufreq_driver longrun_driver = {
*/
static int __init longrun_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
!cpu_has(c, X86_FEATURE_LONGRUN))
if (!x86_match_cpu(longrun_ids))
return -ENODEV;
return cpufreq_register_driver(&longrun_driver);
}

17
drivers/cpufreq/p4-clockmod.c
View File

@ -31,6 +31,7 @@
#include <asm/processor.h>
#include <asm/msr.h>
#include <asm/timer.h>
#include <asm/cpu_device_id.h>
#include "speedstep-lib.h"
@ -289,21 +290,25 @@ static struct cpufreq_driver p4clockmod_driver = {
.attr = p4clockmod_attr,
};
static const struct x86_cpu_id cpufreq_p4_id[] = {
{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ACC },
{}
};
/*
* Intentionally no MODULE_DEVICE_TABLE here: this driver should not
* be auto loaded. Please don't add one.
*/
static int __init cpufreq_p4_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
int ret;
/*
* THERM_CONTROL is architectural for IA32 now, so
* we can rely on the capability checks
*/
if (c->x86_vendor != X86_VENDOR_INTEL)
return -ENODEV;
if (!test_cpu_cap(c, X86_FEATURE_ACPI) ||
!test_cpu_cap(c, X86_FEATURE_ACC))
if (!x86_match_cpu(cpufreq_p4_id) || !boot_cpu_has(X86_FEATURE_ACPI))
return -ENODEV;
ret = cpufreq_register_driver(&p4clockmod_driver);

12
drivers/cpufreq/powernow-k6.c
View File

@ -16,6 +16,7 @@
#include <linux/timex.h>
#include <linux/io.h>
#include <asm/cpu_device_id.h>
#include <asm/msr.h>
#define POWERNOW_IOPORT 0xfff0 /* it doesn't matter where, as long
@ -210,6 +211,12 @@ static struct cpufreq_driver powernow_k6_driver = {
.attr = powernow_k6_attr,
};
static const struct x86_cpu_id powernow_k6_ids[] = {
{ X86_VENDOR_AMD, 5, 12 },
{ X86_VENDOR_AMD, 5, 13 },
{}
};
MODULE_DEVICE_TABLE(x86cpu, powernow_k6_ids);
/**
* powernow_k6_init - initializes the k6 PowerNow! CPUFreq driver
@ -220,10 +227,7 @@ static struct cpufreq_driver powernow_k6_driver = {
*/
static int __init powernow_k6_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 5) ||
((c->x86_model != 12) && (c->x86_model != 13)))
if (!x86_match_cpu(powernow_k6_ids))
return -ENODEV;
if (!request_region(POWERNOW_IOPORT, 16, "PowerNow!")) {

14
drivers/cpufreq/powernow-k7.c
View File

@ -28,6 +28,7 @@
#include <asm/timer.h> /* Needed for recalibrate_cpu_khz() */
#include <asm/msr.h>
#include <asm/system.h>
#include <asm/cpu_device_id.h>
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
#include <linux/acpi.h>
@ -110,18 +111,19 @@ static int check_fsb(unsigned int fsbspeed)
return delta < 5;
}
static const struct x86_cpu_id powernow_k7_cpuids[] = {
{ X86_VENDOR_AMD, 6, },
{}
};
MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids);
static int check_powernow(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int maxei, eax, ebx, ecx, edx;
if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) {
#ifdef MODULE
printk(KERN_INFO PFX "This module only works with "
"AMD K7 CPUs\n");
#endif
if (!x86_match_cpu(powernow_k7_cpuids))
return 0;
}
/* Get maximum capabilities */
maxei = cpuid_eax(0x80000000);

19
drivers/cpufreq/powernow-k8.c
View File

@ -40,6 +40,7 @@
#include <linux/delay.h>
#include <asm/msr.h>
#include <asm/cpu_device_id.h>
#include <linux/acpi.h>
#include <linux/mutex.h>
@ -520,6 +521,15 @@ static int core_voltage_post_transition(struct powernow_k8_data *data,
return 0;
}
static const struct x86_cpu_id powernow_k8_ids[] = {
/* IO based frequency switching */
{ X86_VENDOR_AMD, 0xf },
/* MSR based frequency switching supported */
X86_FEATURE_MATCH(X86_FEATURE_HW_PSTATE),
{}
};
MODULE_DEVICE_TABLE(x86cpu, powernow_k8_ids);
static void check_supported_cpu(void *_rc)
{
u32 eax, ebx, ecx, edx;
@ -527,13 +537,7 @@ static void check_supported_cpu(void *_rc)
*rc = -ENODEV;
if (__this_cpu_read(cpu_info.x86_vendor) != X86_VENDOR_AMD)
return;
eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
if (((eax & CPUID_XFAM) != CPUID_XFAM_K8) &&
((eax & CPUID_XFAM) < CPUID_XFAM_10H))
return;
if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) {
if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
@ -1553,6 +1557,9 @@ static int __cpuinit powernowk8_init(void)
unsigned int i, supported_cpus = 0, cpu;
int rv;
if (!x86_match_cpu(powernow_k8_ids))
return -ENODEV;
for_each_online_cpu(i) {
int rc;
smp_call_function_single(i, check_supported_cpu, &rc, 1);

14
drivers/cpufreq/sc520_freq.c
View File

@ -22,6 +22,7 @@
#include <linux/timex.h>
#include <linux/io.h>
#include <asm/cpu_device_id.h>
#include <asm/msr.h>
#define MMCR_BASE 0xfffef000 /* The default base address */
@ -150,18 +151,19 @@ static struct cpufreq_driver sc520_freq_driver = {
.attr = sc520_freq_attr,
};
static const struct x86_cpu_id sc520_ids[] = {
{ X86_VENDOR_AMD, 4, 9 },
{}
};
MODULE_DEVICE_TABLE(x86cpu, sc520_ids);
static int __init sc520_freq_init(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
int err;
/* Test if we have the right hardware */
if (c->x86_vendor != X86_VENDOR_AMD ||
c->x86 != 4 || c->x86_model != 9) {
pr_debug("no Elan SC520 processor found!\n");
if (!x86_match_cpu(sc520_ids))
return -ENODEV;
}
cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1);
if (!cpuctl) {
printk(KERN_ERR "sc520_freq: error: failed to remap memory\n");

24
drivers/cpufreq/speedstep-centrino.c
View File

@ -25,6 +25,7 @@
#include <asm/msr.h>
#include <asm/processor.h>
#include <asm/cpufeature.h>
#include <asm/cpu_device_id.h>
#define PFX "speedstep-centrino: "
#define MAINTAINER "cpufreq@vger.kernel.org"
@ -595,6 +596,24 @@ static struct cpufreq_driver centrino_driver = {
.owner = THIS_MODULE,
};
/*
* This doesn't replace the detailed checks above because
* the generic CPU IDs don't have a way to match for steppings
* or ASCII model IDs.
*/
static const struct x86_cpu_id centrino_ids[] = {
{ X86_VENDOR_INTEL, 6, 9, X86_FEATURE_EST },
{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
{ X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST },
{ X86_VENDOR_INTEL, 15, 3, X86_FEATURE_EST },
{ X86_VENDOR_INTEL, 15, 4, X86_FEATURE_EST },
{}
};
#if 0
/* Autoload or not? Do not for now. */
MODULE_DEVICE_TABLE(x86cpu, centrino_ids);
#endif
/**
* centrino_init - initializes the Enhanced SpeedStep CPUFreq driver
@ -612,11 +631,8 @@ static struct cpufreq_driver centrino_driver = {
*/
static int __init centrino_init(void)
{
struct cpuinfo_x86 *cpu = &cpu_data(0);
if (!cpu_has(cpu, X86_FEATURE_EST))
if (!x86_match_cpu(centrino_ids))
return -ENODEV;
return cpufreq_register_driver(&centrino_driver);
}

15
drivers/cpufreq/speedstep-ich.c
View File

@ -25,6 +25,8 @@
#include <linux/pci.h>
#include <linux/sched.h>
#include <asm/cpu_device_id.h>
#include "speedstep-lib.h"
@ -388,6 +390,16 @@ static struct cpufreq_driver speedstep_driver = {
.attr = speedstep_attr,
};
static const struct x86_cpu_id ss_smi_ids[] = {
{ X86_VENDOR_INTEL, 6, 0xb, },
{ X86_VENDOR_INTEL, 6, 0x8, },
{ X86_VENDOR_INTEL, 15, 2 },
{}
};
#if 0
/* Autoload or not? Do not for now. */
MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids);
#endif
/**
* speedstep_init - initializes the SpeedStep CPUFreq driver
@ -398,6 +410,9 @@ static struct cpufreq_driver speedstep_driver = {
*/
static int __init speedstep_init(void)
{
if (!x86_match_cpu(ss_smi_ids))
return -ENODEV;
/* detect processor */
speedstep_processor = speedstep_detect_processor();
if (!speedstep_processor) {

1
drivers/cpufreq/speedstep-lib.c
View File

@ -249,6 +249,7 @@ EXPORT_SYMBOL_GPL(speedstep_get_frequency);
* DETECT SPEEDSTEP-CAPABLE PROCESSOR *
*********************************************************************/
/* Keep in sync with the x86_cpu_id tables in the different modules */
unsigned int speedstep_detect_processor(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);

15
drivers/cpufreq/speedstep-smi.c
View File

@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <asm/ist.h>
#include <asm/cpu_device_id.h>
#include "speedstep-lib.h"
@ -379,6 +380,17 @@ static struct cpufreq_driver speedstep_driver = {
.attr = speedstep_attr,
};
static const struct x86_cpu_id ss_smi_ids[] = {
{ X86_VENDOR_INTEL, 6, 0xb, },
{ X86_VENDOR_INTEL, 6, 0x8, },
{ X86_VENDOR_INTEL, 15, 2 },
{}
};
#if 0
/* Not auto loaded currently */
MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids);
#endif
/**
* speedstep_init - initializes the SpeedStep CPUFreq driver
*
@ -388,6 +400,9 @@ static struct cpufreq_driver speedstep_driver = {
*/
static int __init speedstep_init(void)
{
if (!x86_match_cpu(ss_smi_ids))
return -ENODEV;
speedstep_processor = speedstep_detect_processor();
switch (speedstep_processor) {

9
drivers/crypto/padlock-aes.c
View File

@ -19,6 +19,7 @@
#include <linux/percpu.h>
#include <linux/smp.h>
#include <linux/slab.h>
#include <asm/cpu_device_id.h>
#include <asm/byteorder.h>
#include <asm/processor.h>
#include <asm/i387.h>
@ -503,12 +504,18 @@ static struct crypto_alg cbc_aes_alg = {
}
};
static struct x86_cpu_id padlock_cpu_id[] = {
X86_FEATURE_MATCH(X86_FEATURE_XCRYPT),
{}
};
MODULE_DEVICE_TABLE(x86cpu, padlock_cpu_id);
static int __init padlock_init(void)
{
int ret;
struct cpuinfo_x86 *c = &cpu_data(0);
if (!cpu_has_xcrypt)
if (!x86_match_cpu(padlock_cpu_id))
return -ENODEV;
if (!cpu_has_xcrypt_enabled) {

16
drivers/crypto/padlock-sha.c
View File

@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/scatterlist.h>
#include <asm/cpu_device_id.h>
#include <asm/i387.h>
struct padlock_sha_desc {
@ -526,6 +527,12 @@ static struct shash_alg sha256_alg_nano = {
}
};
static struct x86_cpu_id padlock_sha_ids[] = {
X86_FEATURE_MATCH(X86_FEATURE_PHE),
{}
};
MODULE_DEVICE_TABLE(x86cpu, padlock_sha_ids);
static int __init padlock_init(void)
{
int rc = -ENODEV;
@ -533,15 +540,8 @@ static int __init padlock_init(void)
struct shash_alg *sha1;
struct shash_alg *sha256;
if (!cpu_has_phe) {
printk(KERN_NOTICE PFX "VIA PadLock Hash Engine not detected.\n");
if (!x86_match_cpu(padlock_sha_ids) || !cpu_has_phe_enabled)
return -ENODEV;
}
if (!cpu_has_phe_enabled) {
printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
return -ENODEV;
}
/* Register the newly added algorithm module if on *
* VIA Nano processor, or else just do as before */

6
drivers/hid/hid-core.c
View File

@ -1619,11 +1619,7 @@ static ssize_t store_new_id(struct device_driver *drv, const char *buf,
list_add_tail(&dynid->list, &hdrv->dyn_list);
spin_unlock(&hdrv->dyn_lock);
ret = 0;
if (get_driver(&hdrv->driver)) {
ret = driver_attach(&hdrv->driver);
put_driver(&hdrv->driver);
}
ret = driver_attach(&hdrv->driver);
return ret ? : count;
}

87
drivers/hv/channel_mgmt.c
View File

@ -37,81 +37,6 @@ struct vmbus_channel_message_table_entry {
void (*message_handler)(struct vmbus_channel_message_header *msg);
};
#define MAX_MSG_TYPES 4
#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 8
static const uuid_le
supported_device_classes[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = {
/* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */
/* Storage - SCSI */
{
.b = {
0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d,
0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f
}
},
/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
/* Network */
{
.b = {
0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46,
0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E
}
},
/* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */
/* Input */
{
.b = {
0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c,
0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A
}
},
/* {32412632-86cb-44a2-9b5c-50d1417354f5} */
/* IDE */
{
.b = {
0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5
}
},
/* 0E0B6031-5213-4934-818B-38D90CED39DB */
/* Shutdown */
{
.b = {
0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49,
0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB
}
},
/* {9527E630-D0AE-497b-ADCE-E80AB0175CAF} */
/* TimeSync */
{
.b = {
0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49,
0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf
}
},
/* {57164f39-9115-4e78-ab55-382f3bd5422d} */
/* Heartbeat */
{
.b = {
0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e,
0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d
}
},
/* {A9A0F4E7-5A45-4d96-B827-8A841E8C03E6} */
/* KVP */
{
.b = {
0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d,
0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6
}
},
};
/**
* vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message
@ -321,20 +246,8 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr)
struct vmbus_channel *newchannel;
uuid_le *guidtype;
uuid_le *guidinstance;
int i;
int fsupported = 0;
offer = (struct vmbus_channel_offer_channel *)hdr;
for (i = 0; i < MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) {
if (!uuid_le_cmp(offer->offer.if_type,
supported_device_classes[i])) {
fsupported = 1;
break;
}
}
if (!fsupported)
return;
guidtype = &offer->offer.if_type;
guidinstance = &offer->offer.if_instance;

4
drivers/hv/hv.c
View File

@ -155,9 +155,9 @@ int hv_init(void)
union hv_x64_msr_hypercall_contents hypercall_msr;
void *virtaddr = NULL;
memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS);
memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS);
memset(hv_context.synic_message_page, 0,
sizeof(void *) * MAX_NUM_CPUS);
sizeof(void *) * NR_CPUS);
if (!query_hypervisor_presence())
goto cleanup;

255
drivers/hv/hv_kvp.c
View File

@ -28,8 +28,6 @@
#include <linux/workqueue.h>
#include <linux/hyperv.h>
#include "hv_kvp.h"
/*
@ -44,9 +42,10 @@
static struct {
bool active; /* transaction status - active or not */
int recv_len; /* number of bytes received. */
int index; /* current index */
struct hv_kvp_msg *kvp_msg; /* current message */
struct vmbus_channel *recv_channel; /* chn we got the request */
u64 recv_req_id; /* request ID. */
void *kvp_context; /* for the channel callback */
} kvp_transaction;
static void kvp_send_key(struct work_struct *dummy);
@ -73,15 +72,20 @@ kvp_register(void)
{
struct cn_msg *msg;
struct hv_kvp_msg *kvp_msg;
char *version;
msg = kzalloc(sizeof(*msg) + strlen(HV_DRV_VERSION) + 1 , GFP_ATOMIC);
msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg), GFP_ATOMIC);
if (msg) {
kvp_msg = (struct hv_kvp_msg *)msg->data;
version = kvp_msg->body.kvp_register.version;
msg->id.idx = CN_KVP_IDX;
msg->id.val = CN_KVP_VAL;
msg->seq = KVP_REGISTER;
strcpy(msg->data, HV_DRV_VERSION);
msg->len = strlen(HV_DRV_VERSION) + 1;
kvp_msg->kvp_hdr.operation = KVP_OP_REGISTER;
strcpy(version, HV_DRV_VERSION);
msg->len = sizeof(struct hv_kvp_msg);
cn_netlink_send(msg, 0, GFP_ATOMIC);
kfree(msg);
}
@ -103,23 +107,28 @@ kvp_work_func(struct work_struct *dummy)
static void
kvp_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
{
struct hv_ku_msg *message;
struct hv_kvp_msg *message;
struct hv_kvp_msg_enumerate *data;
message = (struct hv_ku_msg *)msg->data;
if (msg->seq == KVP_REGISTER) {
message = (struct hv_kvp_msg *)msg->data;
switch (message->kvp_hdr.operation) {
case KVP_OP_REGISTER:
pr_info("KVP: user-mode registering done.\n");
kvp_register();
}
kvp_transaction.active = false;
hv_kvp_onchannelcallback(kvp_transaction.kvp_context);
break;
if (msg->seq == KVP_USER_SET) {
default:
data = &message->body.kvp_enum_data;
/*
* Complete the transaction by forwarding the key value
* to the host. But first, cancel the timeout.
*/
if (cancel_delayed_work_sync(&kvp_work))
kvp_respond_to_host(message->kvp_key,
message->kvp_value,
!strlen(message->kvp_key));
kvp_respond_to_host(data->data.key,
data->data.value,
!strlen(data->data.key));
}
}
@ -127,19 +136,105 @@ static void
kvp_send_key(struct work_struct *dummy)
{
struct cn_msg *msg;
int index = kvp_transaction.index;
struct hv_kvp_msg *message;
struct hv_kvp_msg *in_msg;
__u8 operation = kvp_transaction.kvp_msg->kvp_hdr.operation;
__u8 pool = kvp_transaction.kvp_msg->kvp_hdr.pool;
__u32 val32;
__u64 val64;
msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg) , GFP_ATOMIC);
if (!msg)
return;
if (msg) {
msg->id.idx = CN_KVP_IDX;
msg->id.val = CN_KVP_VAL;
msg->seq = KVP_KERNEL_GET;
((struct hv_ku_msg *)msg->data)->kvp_index = index;
msg->len = sizeof(struct hv_ku_msg);
cn_netlink_send(msg, 0, GFP_ATOMIC);
kfree(msg);
msg->id.idx = CN_KVP_IDX;
msg->id.val = CN_KVP_VAL;
message = (struct hv_kvp_msg *)msg->data;
message->kvp_hdr.operation = operation;
message->kvp_hdr.pool = pool;
in_msg = kvp_transaction.kvp_msg;
/*
* The key/value strings sent from the host are encoded in
* in utf16; convert it to utf8 strings.
* The host assures us that the utf16 strings will not exceed
* the max lengths specified. We will however, reserve room
* for the string terminating character - in the utf16s_utf8s()
* function we limit the size of the buffer where the converted
* string is placed to HV_KVP_EXCHANGE_MAX_*_SIZE -1 to gaurantee
* that the strings can be properly terminated!
*/
switch (message->kvp_hdr.operation) {
case KVP_OP_SET:
switch (in_msg->body.kvp_set.data.value_type) {
case REG_SZ:
/*
* The value is a string - utf16 encoding.
*/
message->body.kvp_set.data.value_size =
utf16s_to_utf8s(
(wchar_t *)in_msg->body.kvp_set.data.value,
in_msg->body.kvp_set.data.value_size,
UTF16_LITTLE_ENDIAN,
message->body.kvp_set.data.value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE - 1) + 1;
break;
case REG_U32:
/*
* The value is a 32 bit scalar.
* We save this as a utf8 string.
*/
val32 = in_msg->body.kvp_set.data.value_u32;
message->body.kvp_set.data.value_size =
sprintf(message->body.kvp_set.data.value,
"%d", val32) + 1;
break;
case REG_U64:
/*
* The value is a 64 bit scalar.
* We save this as a utf8 string.
*/
val64 = in_msg->body.kvp_set.data.value_u64;
message->body.kvp_set.data.value_size =
sprintf(message->body.kvp_set.data.value,
"%llu", val64) + 1;
break;
}
case KVP_OP_GET:
message->body.kvp_set.data.key_size =
utf16s_to_utf8s(
(wchar_t *)in_msg->body.kvp_set.data.key,
in_msg->body.kvp_set.data.key_size,
UTF16_LITTLE_ENDIAN,
message->body.kvp_set.data.key,
HV_KVP_EXCHANGE_MAX_KEY_SIZE - 1) + 1;
break;
case KVP_OP_DELETE:
message->body.kvp_delete.key_size =
utf16s_to_utf8s(
(wchar_t *)in_msg->body.kvp_delete.key,
in_msg->body.kvp_delete.key_size,
UTF16_LITTLE_ENDIAN,
message->body.kvp_delete.key,
HV_KVP_EXCHANGE_MAX_KEY_SIZE - 1) + 1;
break;
case KVP_OP_ENUMERATE:
message->body.kvp_enum_data.index =
in_msg->body.kvp_enum_data.index;
break;
}
msg->len = sizeof(struct hv_kvp_msg);
cn_netlink_send(msg, 0, GFP_ATOMIC);
kfree(msg);
return;
}
@ -151,10 +246,11 @@ static void
kvp_respond_to_host(char *key, char *value, int error)
{
struct hv_kvp_msg *kvp_msg;
struct hv_kvp_msg_enumerate *kvp_data;
struct hv_kvp_exchg_msg_value *kvp_data;
char *key_name;
struct icmsg_hdr *icmsghdrp;
int keylen, valuelen;
int keylen = 0;
int valuelen = 0;
u32 buf_len;
struct vmbus_channel *channel;
u64 req_id;
@ -181,6 +277,9 @@ kvp_respond_to_host(char *key, char *value, int error)
kvp_transaction.active = false;
icmsghdrp = (struct icmsg_hdr *)
&recv_buffer[sizeof(struct vmbuspipe_hdr)];
if (channel->onchannel_callback == NULL)
/*
* We have raced with util driver being unloaded;
@ -188,41 +287,67 @@ kvp_respond_to_host(char *key, char *value, int error)
*/
return;
icmsghdrp = (struct icmsg_hdr *)
&recv_buffer[sizeof(struct vmbuspipe_hdr)];
kvp_msg = (struct hv_kvp_msg *)
&recv_buffer[sizeof(struct vmbuspipe_hdr) +
sizeof(struct icmsg_hdr)];
kvp_data = &kvp_msg->kvp_data;
key_name = key;
/*
* If the error parameter is set, terminate the host's enumeration.
* If the error parameter is set, terminate the host's enumeration
* on this pool.
*/
if (error) {
/*
* We don't support this index or the we have timedout;
* terminate the host-side iteration by returning an error.
* Something failed or the we have timedout;
* terminate the current host-side iteration.
*/
icmsghdrp->status = HV_E_FAIL;
icmsghdrp->status = HV_S_CONT;
goto response_done;
}
icmsghdrp->status = HV_S_OK;
kvp_msg = (struct hv_kvp_msg *)
&recv_buffer[sizeof(struct vmbuspipe_hdr) +
sizeof(struct icmsg_hdr)];
switch (kvp_transaction.kvp_msg->kvp_hdr.operation) {
case KVP_OP_GET:
kvp_data = &kvp_msg->body.kvp_get.data;
goto copy_value;
case KVP_OP_SET:
case KVP_OP_DELETE:
goto response_done;
default:
break;
}
kvp_data = &kvp_msg->body.kvp_enum_data.data;
key_name = key;
/*
* The windows host expects the key/value pair to be encoded
* in utf16.
* in utf16. Ensure that the key/value size reported to the host
* will be less than or equal to the MAX size (including the
* terminating character).
*/
keylen = utf8s_to_utf16s(key_name, strlen(key_name), UTF16_HOST_ENDIAN,
(wchar_t *) kvp_data->data.key,
HV_KVP_EXCHANGE_MAX_KEY_SIZE / 2);
kvp_data->data.key_size = 2*(keylen + 1); /* utf16 encoding */
valuelen = utf8s_to_utf16s(value, strlen(value), UTF16_HOST_ENDIAN,
(wchar_t *) kvp_data->data.value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE / 2);
kvp_data->data.value_size = 2*(valuelen + 1); /* utf16 encoding */
(wchar_t *) kvp_data->key,
(HV_KVP_EXCHANGE_MAX_KEY_SIZE / 2) - 2);
kvp_data->key_size = 2*(keylen + 1); /* utf16 encoding */
kvp_data->data.value_type = REG_SZ; /* all our values are strings */
icmsghdrp->status = HV_S_OK;
copy_value:
valuelen = utf8s_to_utf16s(value, strlen(value), UTF16_HOST_ENDIAN,
(wchar_t *) kvp_data->value,
(HV_KVP_EXCHANGE_MAX_VALUE_SIZE / 2) - 2);
kvp_data->value_size = 2*(valuelen + 1); /* utf16 encoding */
/*
* If the utf8s to utf16s conversion failed; notify host
* of the error.
*/
if ((keylen < 0) || (valuelen < 0))
icmsghdrp->status = HV_E_FAIL;
kvp_data->value_type = REG_SZ; /* all our values are strings */
response_done:
icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION | ICMSGHDRFLAG_RESPONSE;
@ -249,11 +374,18 @@ void hv_kvp_onchannelcallback(void *context)
u64 requestid;
struct hv_kvp_msg *kvp_msg;
struct hv_kvp_msg_enumerate *kvp_data;
struct icmsg_hdr *icmsghdrp;
struct icmsg_negotiate *negop = NULL;
if (kvp_transaction.active) {
/*
* We will defer processing this callback once
* the current transaction is complete.
*/
kvp_transaction.kvp_context = context;
return;
}
vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE, &recvlen, &requestid);
@ -268,29 +400,16 @@ void hv_kvp_onchannelcallback(void *context)
sizeof(struct vmbuspipe_hdr) +
sizeof(struct icmsg_hdr)];
kvp_data = &kvp_msg->kvp_data;
/*
* We only support the "get" operation on
* "KVP_POOL_AUTO" pool.
*/
if ((kvp_msg->kvp_hdr.pool != KVP_POOL_AUTO) ||
(kvp_msg->kvp_hdr.operation !=
KVP_OP_ENUMERATE)) {
icmsghdrp->status = HV_E_FAIL;
goto callback_done;
}
/*
* Stash away this global state for completing the
* transaction; note transactions are serialized.
*/
kvp_transaction.recv_len = recvlen;
kvp_transaction.recv_channel = channel;
kvp_transaction.recv_req_id = requestid;
kvp_transaction.active = true;
kvp_transaction.index = kvp_data->index;
kvp_transaction.kvp_msg = kvp_msg;
/*
* Get the information from the
@ -308,8 +427,6 @@ void hv_kvp_onchannelcallback(void *context)
}
callback_done:
icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
| ICMSGHDRFLAG_RESPONSE;
@ -330,6 +447,14 @@ hv_kvp_init(struct hv_util_service *srv)
return err;
recv_buffer = srv->recv_buffer;
/*
* When this driver loads, the user level daemon that
* processes the host requests may not yet be running.
* Defer processing channel callbacks until the daemon
* has registered.
*/
kvp_transaction.active = true;
return 0;
}

184
drivers/hv/hv_kvp.h
View File

@ -1,184 +0,0 @@
/*
* An implementation of HyperV key value pair (KVP) functionality for Linux.
*
*
* Copyright (C) 2010, Novell, Inc.
* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef _KVP_H
#define _KVP_H_
/*
* Maximum value size - used for both key names and value data, and includes
* any applicable NULL terminators.
*
* Note: This limit is somewhat arbitrary, but falls easily within what is
* supported for all native guests (back to Win 2000) and what is reasonable
* for the IC KVP exchange functionality. Note that Windows Me/98/95 are
* limited to 255 character key names.
*
* MSDN recommends not storing data values larger than 2048 bytes in the
* registry.
*
* Note: This value is used in defining the KVP exchange message - this value
* cannot be modified without affecting the message size and compatibility.
*/
/*
* bytes, including any null terminators
*/
#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048)
/*
* Maximum key size - the registry limit for the length of an entry name
* is 256 characters, including the null terminator
*/
#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512)
/*
* In Linux, we implement the KVP functionality in two components:
* 1) The kernel component which is packaged as part of the hv_utils driver
* is responsible for communicating with the host and responsible for
* implementing the host/guest protocol. 2) A user level daemon that is
* responsible for data gathering.
*
* Host/Guest Protocol: The host iterates over an index and expects the guest
* to assign a key name to the index and also return the value corresponding to
* the key. The host will have atmost one KVP transaction outstanding at any
* given point in time. The host side iteration stops when the guest returns
* an error. Microsoft has specified the following mapping of key names to
* host specified index:
*
* Index Key Name
* 0 FullyQualifiedDomainName
* 1 IntegrationServicesVersion
* 2 NetworkAddressIPv4
* 3 NetworkAddressIPv6
* 4 OSBuildNumber
* 5 OSName
* 6 OSMajorVersion
* 7 OSMinorVersion
* 8 OSVersion
* 9 ProcessorArchitecture
*
* The Windows host expects the Key Name and Key Value to be encoded in utf16.
*
* Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
* data gathering functionality in a user mode daemon. The user level daemon
* is also responsible for binding the key name to the index as well. The
* kernel and user-level daemon communicate using a connector channel.
*
* The user mode component first registers with the
* the kernel component. Subsequently, the kernel component requests, data
* for the specified keys. In response to this message the user mode component
* fills in the value corresponding to the specified key. We overload the
* sequence field in the cn_msg header to define our KVP message types.
*
*
* The kernel component simply acts as a conduit for communication between the
* Windows host and the user-level daemon. The kernel component passes up the
* index received from the Host to the user-level daemon. If the index is
* valid (supported), the corresponding key as well as its
* value (both are strings) is returned. If the index is invalid
* (not supported), a NULL key string is returned.
*/
/*
*
* The following definitions are shared with the user-mode component; do not
* change any of this without making the corresponding changes in
* the KVP user-mode component.
*/
#define CN_KVP_VAL 0x1 /* This supports queries from the kernel */
#define CN_KVP_USER_VAL 0x2 /* This supports queries from the user */
enum hv_ku_op {
KVP_REGISTER = 0, /* Register the user mode component */
KVP_KERNEL_GET, /* Kernel is requesting the value */
KVP_KERNEL_SET, /* Kernel is providing the value */
KVP_USER_GET, /* User is requesting the value */
KVP_USER_SET /* User is providing the value */
};
struct hv_ku_msg {
__u32 kvp_index; /* Key index */
__u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */
__u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */
};
#ifdef __KERNEL__
/*
* Registry value types.
*/
#define REG_SZ 1
enum hv_kvp_exchg_op {
KVP_OP_GET = 0,
KVP_OP_SET,
KVP_OP_DELETE,
KVP_OP_ENUMERATE,
KVP_OP_COUNT /* Number of operations, must be last. */
};
enum hv_kvp_exchg_pool {
KVP_POOL_EXTERNAL = 0,
KVP_POOL_GUEST,
KVP_POOL_AUTO,
KVP_POOL_AUTO_EXTERNAL,
KVP_POOL_AUTO_INTERNAL,
KVP_POOL_COUNT /* Number of pools, must be last. */
};
struct hv_kvp_hdr {
u8 operation;
u8 pool;
};
struct hv_kvp_exchg_msg_value {
u32 value_type;
u32 key_size;
u32 value_size;
u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
};
struct hv_kvp_msg_enumerate {
u32 index;
struct hv_kvp_exchg_msg_value data;
};
struct hv_kvp_msg {
struct hv_kvp_hdr kvp_hdr;
struct hv_kvp_msg_enumerate kvp_data;
};
int hv_kvp_init(struct hv_util_service *);
void hv_kvp_deinit(void);
void hv_kvp_onchannelcallback(void *);
#endif /* __KERNEL__ */
#endif /* _KVP_H */

3
drivers/hv/hv_util.c
View File

@ -28,9 +28,6 @@
#include <linux/reboot.h>
#include <linux/hyperv.h>
#include "hv_kvp.h"
static void shutdown_onchannelcallback(void *context);
static struct hv_util_service util_shutdown = {
.util_cb = shutdown_onchannelcallback,

5
drivers/hv/hyperv_vmbus.h
View File

@ -457,7 +457,6 @@ static const uuid_le VMBUS_SERVICE_ID = {
},
};
#define MAX_NUM_CPUS 32
struct hv_input_signal_event_buffer {
@ -483,8 +482,8 @@ struct hv_context {
/* 8-bytes aligned of the buffer above */
struct hv_input_signal_event *signal_event_param;
void *synic_message_page[MAX_NUM_CPUS];
void *synic_event_page[MAX_NUM_CPUS];
void *synic_message_page[NR_CPUS];
void *synic_event_page[NR_CPUS];
};
extern struct hv_context hv_context;

17
drivers/hwmon/coretemp.c
View File

@ -39,6 +39,7 @@
#include <linux/moduleparam.h>
#include <asm/msr.h>
#include <asm/processor.h>
#include <asm/cpu_device_id.h>
#define DRVNAME "coretemp"
@ -759,13 +760,23 @@ static struct notifier_block coretemp_cpu_notifier __refdata = {
.notifier_call = coretemp_cpu_callback,
};
static const struct x86_cpu_id coretemp_ids[] = {
{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_DTS },
{}
};
MODULE_DEVICE_TABLE(x86cpu, coretemp_ids);
static int __init coretemp_init(void)
{
int i, err = -ENODEV;
/* quick check if we run Intel */
if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL)
goto exit;
/*
* CPUID.06H.EAX[0] indicates whether the CPU has thermal
* sensors. We check this bit only, all the early CPUs
* without thermal sensors will be filtered out.
*/
if (!x86_match_cpu(coretemp_ids))
return -ENODEV;
err = platform_driver_register(&coretemp_driver);
if (err)

16
drivers/hwmon/via-cputemp.c
View File

@ -37,6 +37,7 @@
#include <linux/cpu.h>
#include <asm/msr.h>
#include <asm/processor.h>
#include <asm/cpu_device_id.h>
#define DRVNAME "via_cputemp"
@ -308,15 +309,20 @@ static struct notifier_block via_cputemp_cpu_notifier __refdata = {
.notifier_call = via_cputemp_cpu_callback,
};
static const struct x86_cpu_id cputemp_ids[] = {
{ X86_VENDOR_CENTAUR, 6, 0xa, }, /* C7 A */
{ X86_VENDOR_CENTAUR, 6, 0xd, }, /* C7 D */
{ X86_VENDOR_CENTAUR, 6, 0xf, }, /* Nano */
{}
};
MODULE_DEVICE_TABLE(x86cpu, cputemp_ids);
static int __init via_cputemp_init(void)
{
int i, err;
if (cpu_data(0).x86_vendor != X86_VENDOR_CENTAUR) {
printk(KERN_DEBUG DRVNAME ": Not a VIA CPU\n");
err = -ENODEV;
goto exit;
}
if (!x86_match_cpu(cputemp_ids))
return -ENODEV;
err = platform_driver_register(&via_cputemp_driver);
if (err)

112
drivers/idle/intel_idle.c
View File

@ -62,6 +62,7 @@
#include <linux/notifier.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <asm/cpu_device_id.h>
#include <asm/mwait.h>
#include <asm/msr.h>
@ -81,18 +82,23 @@ static unsigned int mwait_substates;
/* Reliable LAPIC Timer States, bit 1 for C1 etc. */
static unsigned int lapic_timer_reliable_states = (1 << 1); /* Default to only C1 */
struct idle_cpu {
struct cpuidle_state *state_table;
/*
* Hardware C-state auto-demotion may not always be optimal.
* Indicate which enable bits to clear here.
*/
unsigned long auto_demotion_disable_flags;
};
static const struct idle_cpu *icpu;
static struct cpuidle_device __percpu *intel_idle_cpuidle_devices;
static int intel_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index);
static struct cpuidle_state *cpuidle_state_table;
/*
* Hardware C-state auto-demotion may not always be optimal.
* Indicate which enable bits to clear here.
*/
static unsigned long long auto_demotion_disable_flags;
/*
* Set this flag for states where the HW flushes the TLB for us
* and so we don't need cross-calls to keep it consistent.
@ -319,27 +325,68 @@ static void auto_demotion_disable(void *dummy)
unsigned long long msr_bits;
rdmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
msr_bits &= ~auto_demotion_disable_flags;
msr_bits &= ~(icpu->auto_demotion_disable_flags);
wrmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
}
static const struct idle_cpu idle_cpu_nehalem = {
.state_table = nehalem_cstates,
.auto_demotion_disable_flags = NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE,
};
static const struct idle_cpu idle_cpu_atom = {
.state_table = atom_cstates,
};
static const struct idle_cpu idle_cpu_lincroft = {
.state_table = atom_cstates,
.auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE,
};
static const struct idle_cpu idle_cpu_snb = {
.state_table = snb_cstates,
};
#define ICPU(model, cpu) \
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
static const struct x86_cpu_id intel_idle_ids[] = {
ICPU(0x1a, idle_cpu_nehalem),
ICPU(0x1e, idle_cpu_nehalem),
ICPU(0x1f, idle_cpu_nehalem),
ICPU(0x25, idle_cpu_nehalem),
ICPU(0x2c, idle_cpu_nehalem),
ICPU(0x2e, idle_cpu_nehalem),
ICPU(0x1c, idle_cpu_atom),
ICPU(0x26, idle_cpu_lincroft),
ICPU(0x2f, idle_cpu_nehalem),
ICPU(0x2a, idle_cpu_snb),
ICPU(0x2d, idle_cpu_snb),
{}
};
MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);
/*
* intel_idle_probe()
*/
static int intel_idle_probe(void)
{
unsigned int eax, ebx, ecx;
const struct x86_cpu_id *id;
if (max_cstate == 0) {
pr_debug(PREFIX "disabled\n");
return -EPERM;
}
if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
return -ENODEV;
if (!boot_cpu_has(X86_FEATURE_MWAIT))
id = x86_match_cpu(intel_idle_ids);
if (!id) {
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
boot_cpu_data.x86 == 6)
pr_debug(PREFIX "does not run on family %d model %d\n",
boot_cpu_data.x86, boot_cpu_data.x86_model);
return -ENODEV;
}
if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
return -ENODEV;
@ -353,43 +400,8 @@ static int intel_idle_probe(void)
pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates);
if (boot_cpu_data.x86 != 6) /* family 6 */
return -ENODEV;
switch (boot_cpu_data.x86_model) {
case 0x1A: /* Core i7, Xeon 5500 series */
case 0x1E: /* Core i7 and i5 Processor - Lynnfield Jasper Forest */
case 0x1F: /* Core i7 and i5 Processor - Nehalem */
case 0x2E: /* Nehalem-EX Xeon */
case 0x2F: /* Westmere-EX Xeon */
case 0x25: /* Westmere */
case 0x2C: /* Westmere */
cpuidle_state_table = nehalem_cstates;
auto_demotion_disable_flags =
(NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE);
break;
case 0x1C: /* 28 - Atom Processor */
cpuidle_state_table = atom_cstates;
break;
case 0x26: /* 38 - Lincroft Atom Processor */
cpuidle_state_table = atom_cstates;
auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE;
break;
case 0x2A: /* SNB */
case 0x2D: /* SNB Xeon */
cpuidle_state_table = snb_cstates;
break;
default:
pr_debug(PREFIX "does not run on family %d model %d\n",
boot_cpu_data.x86, boot_cpu_data.x86_model);
return -ENODEV;
}
icpu = (const struct idle_cpu *)id->driver_data;
cpuidle_state_table = icpu->state_table;
if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */
lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE;
@ -470,7 +482,7 @@ static int intel_idle_cpuidle_driver_init(void)
drv->state_count += 1;
}
if (auto_demotion_disable_flags)
if (icpu->auto_demotion_disable_flags)
on_each_cpu(auto_demotion_disable, NULL, 1);
return 0;
@ -522,7 +534,7 @@ int intel_idle_cpu_init(int cpu)
return -EIO;
}
if (auto_demotion_disable_flags)
if (icpu->auto_demotion_disable_flags)
smp_call_function_single(cpu, auto_demotion_disable, NULL, 1);
return 0;

1
drivers/input/gameport/gameport.c
View File

@ -449,7 +449,6 @@ static ssize_t gameport_rebind_driver(struct device *dev, struct device_attribut
} else if ((drv = driver_find(buf, &gameport_bus)) != NULL) {
gameport_disconnect_port(gameport);
error = gameport_bind_driver(gameport, to_gameport_driver(drv));
put_driver(drv);
} else {
error = -EINVAL;
}

1
drivers/input/serio/serio.c
View File

@ -441,7 +441,6 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute *
} else if ((drv = driver_find(buf, &serio_bus)) != NULL) {
serio_disconnect_port(serio);
error = serio_bind_driver(serio, to_serio_driver(drv));
put_driver(drv);
serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT);
} else {
error = -EINVAL;

1
drivers/media/video/cx18/cx18-alsa-main.c
View File

@ -285,7 +285,6 @@ static void __exit cx18_alsa_exit(void)
drv = driver_find("cx18", &pci_bus_type);
ret = driver_for_each_device(drv, NULL, NULL, cx18_alsa_exit_callback);
put_driver(drv);
cx18_ext_init = NULL;
printk(KERN_INFO "cx18-alsa: module unload complete\n");

2
drivers/media/video/ivtv/ivtvfb.c
View File

@ -1293,7 +1293,6 @@ static int __init ivtvfb_init(void)
drv = driver_find("ivtv", &pci_bus_type);
err = driver_for_each_device(drv, NULL, &registered, ivtvfb_callback_init);
put_driver(drv);
if (!registered) {
printk(KERN_ERR "ivtvfb: no cards found\n");
return -ENODEV;
@ -1310,7 +1309,6 @@ static void ivtvfb_cleanup(void)
drv = driver_find("ivtv", &pci_bus_type);
err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
put_driver(drv);
}
module_init(ivtvfb_init);

5
drivers/media/video/s5p-fimc/fimc-mdevice.c
View File

@ -344,16 +344,13 @@ static int fimc_md_register_platform_entities(struct fimc_md *fmd)
return -ENODEV;
ret = driver_for_each_device(driver, NULL, fmd,
fimc_register_callback);
put_driver(driver);
if (ret)
return ret;
driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type);
if (driver) {
if (driver)
ret = driver_for_each_device(driver, NULL, fmd,
csis_register_callback);
put_driver(driver);
}
return ret;
}

1
drivers/media/video/s5p-tv/mixer_video.c
View File

@ -58,7 +58,6 @@ static struct v4l2_subdev *find_and_register_subdev(
}
done:
put_driver(drv);
return sd;
}

6
drivers/net/phy/phy_device.c
View File

@ -915,9 +915,7 @@ static int phy_probe(struct device *dev)
phydev = to_phy_device(dev);
/* Make sure the driver is held.
* XXX -- Is this correct? */
drv = get_driver(phydev->dev.driver);
drv = phydev->dev.driver;
phydrv = to_phy_driver(drv);
phydev->drv = phydrv;
@ -957,8 +955,6 @@ static int phy_remove(struct device *dev)
if (phydev->drv->remove)
phydev->drv->remove(phydev);
put_driver(dev->driver);
phydev->drv = NULL;
return 0;

52
drivers/pci/pci-driver.c
View File

@ -72,9 +72,7 @@ int pci_add_dynid(struct pci_driver *drv,
list_add_tail(&dynid->node, &drv->dynids.list);
spin_unlock(&drv->dynids.lock);
get_driver(&drv->driver);
retval = driver_attach(&drv->driver);
put_driver(&drv->driver);
return retval;
}
@ -190,43 +188,34 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count)
static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
static int
pci_create_newid_file(struct pci_driver *drv)
pci_create_newid_files(struct pci_driver *drv)
{
int error = 0;
if (drv->probe != NULL)
if (drv->probe != NULL) {
error = driver_create_file(&drv->driver, &driver_attr_new_id);
if (error == 0) {
error = driver_create_file(&drv->driver,
&driver_attr_remove_id);
if (error)
driver_remove_file(&drv->driver,
&driver_attr_new_id);
}
}
return error;
}
static void pci_remove_newid_file(struct pci_driver *drv)
{
driver_remove_file(&drv->driver, &driver_attr_new_id);
}
static int
pci_create_removeid_file(struct pci_driver *drv)
{
int error = 0;
if (drv->probe != NULL)
error = driver_create_file(&drv->driver,&driver_attr_remove_id);
return error;
}
static void pci_remove_removeid_file(struct pci_driver *drv)
static void pci_remove_newid_files(struct pci_driver *drv)
{
driver_remove_file(&drv->driver, &driver_attr_remove_id);
driver_remove_file(&drv->driver, &driver_attr_new_id);
}
#else /* !CONFIG_HOTPLUG */
static inline int pci_create_newid_file(struct pci_driver *drv)
static inline int pci_create_newid_files(struct pci_driver *drv)
{
return 0;
}
static inline void pci_remove_newid_file(struct pci_driver *drv) {}
static inline int pci_create_removeid_file(struct pci_driver *drv)
{
return 0;
}
static inline void pci_remove_removeid_file(struct pci_driver *drv) {}
static inline void pci_remove_newid_files(struct pci_driver *drv) {}
#endif
/**
@ -1138,18 +1127,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
if (error)
goto out;
error = pci_create_newid_file(drv);
error = pci_create_newid_files(drv);
if (error)
goto out_newid;
error = pci_create_removeid_file(drv);
if (error)
goto out_removeid;
out:
return error;
out_removeid:
pci_remove_newid_file(drv);
out_newid:
driver_unregister(&drv->driver);
goto out;
@ -1168,8 +1151,7 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
void
pci_unregister_driver(struct pci_driver *drv)
{
pci_remove_removeid_file(drv);
pci_remove_newid_file(drv);
pci_remove_newid_files(drv);
driver_unregister(&drv->driver);
pci_free_dynids(drv);
}

3
drivers/pci/xen-pcifront.c
View File

@ -593,7 +593,7 @@ static pci_ers_result_t pcifront_common_process(int cmd,
}
pdrv = pcidev->driver;
if (get_driver(&pdrv->driver)) {
if (pdrv) {
if (pdrv->err_handler && pdrv->err_handler->error_detected) {
dev_dbg(&pcidev->dev,
"trying to call AER service\n");
@ -623,7 +623,6 @@ static pci_ers_result_t pcifront_common_process(int cmd,
}
}
}
put_driver(&pdrv->driver);
}
if (!flag)
result = PCI_ERS_RESULT_NONE;

11
drivers/pcmcia/ds.c
View File

@ -127,10 +127,7 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
list_add_tail(&dynid->node, &pdrv->dynids.list);
mutex_unlock(&pdrv->dynids.lock);
if (get_driver(&pdrv->drv)) {
retval = driver_attach(&pdrv->drv);
put_driver(&pdrv->drv);
}
retval = driver_attach(&pdrv->drv);
if (retval)
return retval;
@ -160,6 +157,11 @@ pcmcia_create_newid_file(struct pcmcia_driver *drv)
return error;
}
static void
pcmcia_remove_newid_file(struct pcmcia_driver *drv)
{
driver_remove_file(&drv->drv, &driver_attr_new_id);
}
/**
* pcmcia_register_driver - register a PCMCIA driver with the bus core
@ -204,6 +206,7 @@ EXPORT_SYMBOL(pcmcia_register_driver);
void pcmcia_unregister_driver(struct pcmcia_driver *driver)
{
pr_debug("unregistering driver %s\n", driver->name);
pcmcia_remove_newid_file(driver);
driver_unregister(&driver->drv);
pcmcia_free_dynids(driver);
}

14
drivers/power/Kconfig
View File

@ -76,6 +76,20 @@ config BATTERY_DS2780
help
Say Y here to enable support for batteries with ds2780 chip.
config BATTERY_DS2781
tristate "2781 battery driver"
depends on HAS_IOMEM
select W1
select W1_SLAVE_DS2781
help
If you enable this you will have the DS2781 battery driver support.
The battery monitor chip is used in many batteries/devices
as the one who is responsible for charging/discharging/monitoring
Li+ batteries.
If you are unsure, say N.
config BATTERY_DS2782
tristate "DS2782/DS2786 standalone gas-gauge"
depends on I2C

1
drivers/power/Makefile
View File

@ -16,6 +16,7 @@ obj-$(CONFIG_TEST_POWER) += test_power.o
obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
obj-$(CONFIG_BATTERY_DS2780) += ds2780_battery.o
obj-$(CONFIG_BATTERY_DS2781) += ds2781_battery.o
obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o
obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o

874
drivers/power/ds2781_battery.c Normal file
View File

@ -0,0 +1,874 @@
/*
* 1-wire client/driver for the Maxim/Dallas DS2781 Stand-Alone Fuel Gauge IC
*
* Author: Renata Sayakhova <renata@oktetlabs.ru>
*
* Based on ds2780_battery drivers
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/param.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/idr.h>
#include "../w1/w1.h"
#include "../w1/slaves/w1_ds2781.h"
/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
#define DS2781_CURRENT_UNITS 1563
/* Charge unit measurement in uAh for a 1 milli-ohm sense resistor */
#define DS2781_CHARGE_UNITS 6250
/* Number of bytes in user EEPROM space */
#define DS2781_USER_EEPROM_SIZE (DS2781_EEPROM_BLOCK0_END - \
DS2781_EEPROM_BLOCK0_START + 1)
/* Number of bytes in parameter EEPROM space */
#define DS2781_PARAM_EEPROM_SIZE (DS2781_EEPROM_BLOCK1_END - \
DS2781_EEPROM_BLOCK1_START + 1)
struct ds2781_device_info {
struct device *dev;
struct power_supply bat;
struct device *w1_dev;
struct task_struct *mutex_holder;
};
enum current_types {
CURRENT_NOW,
CURRENT_AVG,
};
static const char model[] = "DS2781";
static const char manufacturer[] = "Maxim/Dallas";
static inline struct ds2781_device_info *
to_ds2781_device_info(struct power_supply *psy)
{
return container_of(psy, struct ds2781_device_info, bat);
}
static inline struct power_supply *to_power_supply(struct device *dev)
{
return dev_get_drvdata(dev);
}
static inline int ds2781_battery_io(struct ds2781_device_info *dev_info,
char *buf, int addr, size_t count, int io)
{
if (dev_info->mutex_holder == current)
return w1_ds2781_io_nolock(dev_info->w1_dev, buf, addr,
count, io);
else
return w1_ds2781_io(dev_info->w1_dev, buf, addr, count, io);
}
int w1_ds2781_read(struct ds2781_device_info *dev_info, char *buf,
int addr, size_t count)
{
return ds2781_battery_io(dev_info, buf, addr, count, 0);
}
static inline int ds2781_read8(struct ds2781_device_info *dev_info, u8 *val,
int addr)
{
return ds2781_battery_io(dev_info, val, addr, sizeof(u8), 0);
}
static int ds2781_read16(struct ds2781_device_info *dev_info, s16 *val,
int addr)
{
int ret;
u8 raw[2];
ret = ds2781_battery_io(dev_info, raw, addr, sizeof(raw), 0);
if (ret < 0)
return ret;
*val = (raw[0] << 8) | raw[1];
return 0;
}
static inline int ds2781_read_block(struct ds2781_device_info *dev_info,
u8 *val, int addr, size_t count)
{
return ds2781_battery_io(dev_info, val, addr, count, 0);
}
static inline int ds2781_write(struct ds2781_device_info *dev_info, u8 *val,
int addr, size_t count)
{
return ds2781_battery_io(dev_info, val, addr, count, 1);
}
static inline int ds2781_store_eeprom(struct device *dev, int addr)
{
return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_COPY_DATA);
}
static inline int ds2781_recall_eeprom(struct device *dev, int addr)
{
return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_RECALL_DATA);
}
static int ds2781_save_eeprom(struct ds2781_device_info *dev_info, int reg)
{
int ret;
ret = ds2781_store_eeprom(dev_info->w1_dev, reg);
if (ret < 0)
return ret;
ret = ds2781_recall_eeprom(dev_info->w1_dev, reg);
if (ret < 0)
return ret;
return 0;
}
/* Set sense resistor value in mhos */
static int ds2781_set_sense_register(struct ds2781_device_info *dev_info,
u8 conductance)
{
int ret;
ret = ds2781_write(dev_info, &conductance,
DS2781_RSNSP, sizeof(u8));
if (ret < 0)
return ret;
return ds2781_save_eeprom(dev_info, DS2781_RSNSP);
}
/* Get RSGAIN value from 0 to 1.999 in steps of 0.001 */
static int ds2781_get_rsgain_register(struct ds2781_device_info *dev_info,
u16 *rsgain)
{
return ds2781_read16(dev_info, rsgain, DS2781_RSGAIN_MSB);
}
/* Set RSGAIN value from 0 to 1.999 in steps of 0.001 */
static int ds2781_set_rsgain_register(struct ds2781_device_info *dev_info,
u16 rsgain)
{
int ret;
u8 raw[] = {rsgain >> 8, rsgain & 0xFF};
ret = ds2781_write(dev_info, raw,
DS2781_RSGAIN_MSB, sizeof(raw));
if (ret < 0)
return ret;
return ds2781_save_eeprom(dev_info, DS2781_RSGAIN_MSB);
}
static int ds2781_get_voltage(struct ds2781_device_info *dev_info,
int *voltage_uV)
{
int ret;
char val[2];
int voltage_raw;
ret = w1_ds2781_read(dev_info, val, DS2781_VOLT_MSB, 2 * sizeof(u8));
if (ret < 0)
return ret;
/*
* The voltage value is located in 10 bits across the voltage MSB
* and LSB registers in two's compliment form
* Sign bit of the voltage value is in bit 7 of the voltage MSB register
* Bits 9 - 3 of the voltage value are in bits 6 - 0 of the
* voltage MSB register
* Bits 2 - 0 of the voltage value are in bits 7 - 5 of the
* voltage LSB register
*/
voltage_raw = (val[0] << 3) |
(val[1] >> 5);
/* DS2781 reports voltage in units of 9.76mV, but the battery class
* reports in units of uV, so convert by multiplying by 9760. */
*voltage_uV = voltage_raw * 9760;
return 0;
}
static int ds2781_get_temperature(struct ds2781_device_info *dev_info,
int *temp)
{
int ret;
char val[2];
int temp_raw;
ret = w1_ds2781_read(dev_info, val, DS2781_TEMP_MSB, 2 * sizeof(u8));
if (ret < 0)
return ret;
/*
* The temperature value is located in 10 bits across the temperature
* MSB and LSB registers in two's compliment form
* Sign bit of the temperature value is in bit 7 of the temperature
* MSB register
* Bits 9 - 3 of the temperature value are in bits 6 - 0 of the
* temperature MSB register
* Bits 2 - 0 of the temperature value are in bits 7 - 5 of the
* temperature LSB register
*/
temp_raw = ((val[0]) << 3) |
(val[1] >> 5);
*temp = temp_raw + (temp_raw / 4);
return 0;
}
static int ds2781_get_current(struct ds2781_device_info *dev_info,
enum current_types type, int *current_uA)
{
int ret, sense_res;
s16 current_raw;
u8 sense_res_raw, reg_msb;
/*
* The units of measurement for current are dependent on the value of
* the sense resistor.
*/
ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
if (ret < 0)
return ret;
if (sense_res_raw == 0) {
dev_err(dev_info->dev, "sense resistor value is 0\n");
return -EINVAL;
}
sense_res = 1000 / sense_res_raw;
if (type == CURRENT_NOW)
reg_msb = DS2781_CURRENT_MSB;
else if (type == CURRENT_AVG)
reg_msb = DS2781_IAVG_MSB;
else
return -EINVAL;
/*
* The current value is located in 16 bits across the current MSB
* and LSB registers in two's compliment form
* Sign bit of the current value is in bit 7 of the current MSB register
* Bits 14 - 8 of the current value are in bits 6 - 0 of the current
* MSB register
* Bits 7 - 0 of the current value are in bits 7 - 0 of the current
* LSB register
*/
ret = ds2781_read16(dev_info, &current_raw, reg_msb);
if (ret < 0)
return ret;
*current_uA = current_raw * (DS2781_CURRENT_UNITS / sense_res);
return 0;
}
static int ds2781_get_accumulated_current(struct ds2781_device_info *dev_info,
int *accumulated_current)
{
int ret, sense_res;
s16 current_raw;
u8 sense_res_raw;
/*
* The units of measurement for accumulated current are dependent on
* the value of the sense resistor.
*/
ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
if (ret < 0)
return ret;
if (sense_res_raw == 0) {
dev_err(dev_info->dev, "sense resistor value is 0\n");
return -EINVAL;
}
sense_res = 1000 / sense_res_raw;
/*
* The ACR value is located in 16 bits across the ACR MSB and
* LSB registers
* Bits 15 - 8 of the ACR value are in bits 7 - 0 of the ACR
* MSB register
* Bits 7 - 0 of the ACR value are in bits 7 - 0 of the ACR
* LSB register
*/
ret = ds2781_read16(dev_info, &current_raw, DS2781_ACR_MSB);
if (ret < 0)
return ret;
*accumulated_current = current_raw * (DS2781_CHARGE_UNITS / sense_res);
return 0;
}
static int ds2781_get_capacity(struct ds2781_device_info *dev_info,
int *capacity)
{
int ret;
u8 raw;
ret = ds2781_read8(dev_info, &raw, DS2781_RARC);
if (ret < 0)
return ret;
*capacity = raw;
return 0;
}
static int ds2781_get_status(struct ds2781_device_info *dev_info, int *status)
{
int ret, current_uA, capacity;
ret = ds2781_get_current(dev_info, CURRENT_NOW, &current_uA);
if (ret < 0)
return ret;
ret = ds2781_get_capacity(dev_info, &capacity);
if (ret < 0)
return ret;
if (power_supply_am_i_supplied(&dev_info->bat)) {
if (capacity == 100)
*status = POWER_SUPPLY_STATUS_FULL;
else if (current_uA > 50000)
*status = POWER_SUPPLY_STATUS_CHARGING;
else
*status = POWER_SUPPLY_STATUS_NOT_CHARGING;
} else {
*status = POWER_SUPPLY_STATUS_DISCHARGING;
}
return 0;
}
static int ds2781_get_charge_now(struct ds2781_device_info *dev_info,
int *charge_now)
{
int ret;
u16 charge_raw;
/*
* The RAAC value is located in 16 bits across the RAAC MSB and
* LSB registers
* Bits 15 - 8 of the RAAC value are in bits 7 - 0 of the RAAC
* MSB register
* Bits 7 - 0 of the RAAC value are in bits 7 - 0 of the RAAC
* LSB register
*/
ret = ds2781_read16(dev_info, &charge_raw, DS2781_RAAC_MSB);
if (ret < 0)
return ret;
*charge_now = charge_raw * 1600;
return 0;
}
static int ds2781_get_control_register(struct ds2781_device_info *dev_info,
u8 *control_reg)
{
return ds2781_read8(dev_info, control_reg, DS2781_CONTROL);
}
static int ds2781_set_control_register(struct ds2781_device_info *dev_info,
u8 control_reg)
{
int ret;
ret = ds2781_write(dev_info, &control_reg,
DS2781_CONTROL, sizeof(u8));
if (ret < 0)
return ret;
return ds2781_save_eeprom(dev_info, DS2781_CONTROL);
}
static int ds2781_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int ret = 0;
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
ret = ds2781_get_voltage(dev_info, &val->intval);
break;
case POWER_SUPPLY_PROP_TEMP:
ret = ds2781_get_temperature(dev_info, &val->intval);
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = model;
break;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = manufacturer;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
ret = ds2781_get_current(dev_info, CURRENT_NOW, &val->intval);
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
ret = ds2781_get_current(dev_info, CURRENT_AVG, &val->intval);
break;
case POWER_SUPPLY_PROP_STATUS:
ret = ds2781_get_status(dev_info, &val->intval);
break;
case POWER_SUPPLY_PROP_CAPACITY:
ret = ds2781_get_capacity(dev_info, &val->intval);
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
ret = ds2781_get_accumulated_current(dev_info, &val->intval);
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
ret = ds2781_get_charge_now(dev_info, &val->intval);
break;
default:
ret = -EINVAL;
}
return ret;
}
static enum power_supply_property ds2781_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CHARGE_NOW,
};
static ssize_t ds2781_get_pmod_enabled(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u8 control_reg;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
/* Get power mode */
ret = ds2781_get_control_register(dev_info, &control_reg);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n",
!!(control_reg & DS2781_CONTROL_PMOD));
}
static ssize_t ds2781_set_pmod_enabled(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
int ret;
u8 control_reg, new_setting;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
/* Set power mode */
ret = ds2781_get_control_register(dev_info, &control_reg);
if (ret < 0)
return ret;
ret = kstrtou8(buf, 0, &new_setting);
if (ret < 0)
return ret;
if ((new_setting != 0) && (new_setting != 1)) {
dev_err(dev_info->dev, "Invalid pmod setting (0 or 1)\n");
return -EINVAL;
}
if (new_setting)
control_reg |= DS2781_CONTROL_PMOD;
else
control_reg &= ~DS2781_CONTROL_PMOD;
ret = ds2781_set_control_register(dev_info, control_reg);
if (ret < 0)
return ret;
return count;
}
static ssize_t ds2781_get_sense_resistor_value(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u8 sense_resistor;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = ds2781_read8(dev_info, &sense_resistor, DS2781_RSNSP);
if (ret < 0)
return ret;
ret = sprintf(buf, "%d\n", sense_resistor);
return ret;
}
static ssize_t ds2781_set_sense_resistor_value(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
int ret;
u8 new_setting;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = kstrtou8(buf, 0, &new_setting);
if (ret < 0)
return ret;
ret = ds2781_set_sense_register(dev_info, new_setting);
if (ret < 0)
return ret;
return count;
}
static ssize_t ds2781_get_rsgain_setting(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u16 rsgain;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = ds2781_get_rsgain_register(dev_info, &rsgain);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n", rsgain);
}
static ssize_t ds2781_set_rsgain_setting(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
int ret;
u16 new_setting;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = kstrtou16(buf, 0, &new_setting);
if (ret < 0)
return ret;
/* Gain can only be from 0 to 1.999 in steps of .001 */
if (new_setting > 1999) {
dev_err(dev_info->dev, "Invalid rsgain setting (0 - 1999)\n");
return -EINVAL;
}
ret = ds2781_set_rsgain_register(dev_info, new_setting);
if (ret < 0)
return ret;
return count;
}
static ssize_t ds2781_get_pio_pin(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u8 sfr;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = ds2781_read8(dev_info, &sfr, DS2781_SFR);
if (ret < 0)
return ret;
ret = sprintf(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
return ret;
}
static ssize_t ds2781_set_pio_pin(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
int ret;
u8 new_setting;
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
ret = kstrtou8(buf, 0, &new_setting);
if (ret < 0)
return ret;
if ((new_setting != 0) && (new_setting != 1)) {
dev_err(dev_info->dev, "Invalid pio_pin setting (0 or 1)\n");
return -EINVAL;
}
ret = ds2781_write(dev_info, &new_setting,
DS2781_SFR, sizeof(u8));
if (ret < 0)
return ret;
return count;
}
static ssize_t ds2781_read_param_eeprom_bin(struct file *filp,
struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
count = min_t(loff_t, count,
DS2781_EEPROM_BLOCK1_END -
DS2781_EEPROM_BLOCK1_START + 1 - off);
return ds2781_read_block(dev_info, buf,
DS2781_EEPROM_BLOCK1_START + off, count);
}
static ssize_t ds2781_write_param_eeprom_bin(struct file *filp,
struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
int ret;
count = min_t(loff_t, count,
DS2781_EEPROM_BLOCK1_END -
DS2781_EEPROM_BLOCK1_START + 1 - off);
ret = ds2781_write(dev_info, buf,
DS2781_EEPROM_BLOCK1_START + off, count);
if (ret < 0)
return ret;
ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK1_START);
if (ret < 0)
return ret;
return count;
}
static struct bin_attribute ds2781_param_eeprom_bin_attr = {
.attr = {
.name = "param_eeprom",
.mode = S_IRUGO | S_IWUSR,
},
.size = DS2781_EEPROM_BLOCK1_END - DS2781_EEPROM_BLOCK1_START + 1,
.read = ds2781_read_param_eeprom_bin,
.write = ds2781_write_param_eeprom_bin,
};
static ssize_t ds2781_read_user_eeprom_bin(struct file *filp,
struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
count = min_t(loff_t, count,
DS2781_EEPROM_BLOCK0_END -
DS2781_EEPROM_BLOCK0_START + 1 - off);
return ds2781_read_block(dev_info, buf,
DS2781_EEPROM_BLOCK0_START + off, count);
}
static ssize_t ds2781_write_user_eeprom_bin(struct file *filp,
struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct power_supply *psy = to_power_supply(dev);
struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
int ret;
count = min_t(loff_t, count,
DS2781_EEPROM_BLOCK0_END -
DS2781_EEPROM_BLOCK0_START + 1 - off);
ret = ds2781_write(dev_info, buf,
DS2781_EEPROM_BLOCK0_START + off, count);
if (ret < 0)
return ret;
ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK0_START);
if (ret < 0)
return ret;
return count;
}
static struct bin_attribute ds2781_user_eeprom_bin_attr = {
.attr = {
.name = "user_eeprom",
.mode = S_IRUGO | S_IWUSR,
},
.size = DS2781_EEPROM_BLOCK0_END - DS2781_EEPROM_BLOCK0_START + 1,
.read = ds2781_read_user_eeprom_bin,
.write = ds2781_write_user_eeprom_bin,
};
static DEVICE_ATTR(pmod_enabled, S_IRUGO | S_IWUSR, ds2781_get_pmod_enabled,
ds2781_set_pmod_enabled);
static DEVICE_ATTR(sense_resistor_value, S_IRUGO | S_IWUSR,
ds2781_get_sense_resistor_value, ds2781_set_sense_resistor_value);
static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2781_get_rsgain_setting,
ds2781_set_rsgain_setting);
static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin,
ds2781_set_pio_pin);
static struct attribute *ds2781_attributes[] = {
&dev_attr_pmod_enabled.attr,
&dev_attr_sense_resistor_value.attr,
&dev_attr_rsgain_setting.attr,
&dev_attr_pio_pin.attr,
NULL
};
static const struct attribute_group ds2781_attr_group = {
.attrs = ds2781_attributes,
};
static int __devinit ds2781_battery_probe(struct platform_device *pdev)
{
int ret = 0;
struct ds2781_device_info *dev_info;
dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
if (!dev_info) {
ret = -ENOMEM;
goto fail;
}
platform_set_drvdata(pdev, dev_info);
dev_info->dev = &pdev->dev;
dev_info->w1_dev = pdev->dev.parent;
dev_info->bat.name = dev_name(&pdev->dev);
dev_info->bat.type = POWER_SUPPLY_TYPE_BATTERY;
dev_info->bat.properties = ds2781_battery_props;
dev_info->bat.num_properties = ARRAY_SIZE(ds2781_battery_props);
dev_info->bat.get_property = ds2781_battery_get_property;
dev_info->mutex_holder = current;
ret = power_supply_register(&pdev->dev, &dev_info->bat);
if (ret) {
dev_err(dev_info->dev, "failed to register battery\n");
goto fail_free_info;
}
ret = sysfs_create_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
if (ret) {
dev_err(dev_info->dev, "failed to create sysfs group\n");
goto fail_unregister;
}
ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
&ds2781_param_eeprom_bin_attr);
if (ret) {
dev_err(dev_info->dev,
"failed to create param eeprom bin file");
goto fail_remove_group;
}
ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
&ds2781_user_eeprom_bin_attr);
if (ret) {
dev_err(dev_info->dev,
"failed to create user eeprom bin file");
goto fail_remove_bin_file;
}
dev_info->mutex_holder = NULL;
return 0;
fail_remove_bin_file:
sysfs_remove_bin_file(&dev_info->bat.dev->kobj,
&ds2781_param_eeprom_bin_attr);
fail_remove_group:
sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
fail_unregister:
power_supply_unregister(&dev_info->bat);
fail_free_info:
kfree(dev_info);
fail:
return ret;
}
static int __devexit ds2781_battery_remove(struct platform_device *pdev)
{
struct ds2781_device_info *dev_info = platform_get_drvdata(pdev);
dev_info->mutex_holder = current;
/* remove attributes */
sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
power_supply_unregister(&dev_info->bat);
kfree(dev_info);
return 0;
}
static struct platform_driver ds2781_battery_driver = {
.driver = {
.name = "ds2781-battery",
},
.probe = ds2781_battery_probe,
.remove = __devexit_p(ds2781_battery_remove),
};
static int __init ds2781_battery_init(void)
{
return platform_driver_register(&ds2781_battery_driver);
}
static void __exit ds2781_battery_exit(void)
{
platform_driver_unregister(&ds2781_battery_driver);
}
module_init(ds2781_battery_init);
module_exit(ds2781_battery_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");
MODULE_DESCRIPTION("Maxim/Dallas DS2781 Stand-Alone Fuel Gauage IC driver");
MODULE_ALIAS("platform:ds2781-battery");

4
drivers/regulator/core.c
View File

@ -1210,7 +1210,7 @@ static struct regulator *_regulator_get(struct device *dev, const char *id,
{
struct regulator_dev *rdev;
struct regulator_map *map;
struct regulator *regulator = ERR_PTR(-ENODEV);
struct regulator *regulator = ERR_PTR(-EPROBE_DEFER);
const char *devname = NULL;
int ret;
@ -2834,7 +2834,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
if (!r) {
dev_err(dev, "Failed to find supply %s\n", supply);
ret = -ENODEV;
ret = -EPROBE_DEFER;
goto scrub;
}

2
drivers/s390/cio/ccwgroup.c
View File

@ -580,7 +580,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
struct device *dev;
/* We don't want ccwgroup devices to live longer than their driver. */
get_driver(&cdriver->driver);
while ((dev = driver_find_device(&cdriver->driver, NULL, NULL,
__ccwgroup_match_all))) {
struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
@ -592,7 +591,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
mutex_unlock(&gdev->reg_mutex);
put_device(dev);
}
put_driver(&cdriver->driver);
driver_unregister(&cdriver->driver);
}
EXPORT_SYMBOL(ccwgroup_driver_unregister);

8
drivers/s390/cio/device.c
View File

@ -1676,15 +1676,9 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
const char *bus_id)
{
struct device *dev;
struct device_driver *drv;
drv = get_driver(&cdrv->driver);
if (!drv)
return NULL;
dev = driver_find_device(drv, NULL, (void *)bus_id,
dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id,
__ccwdev_check_busid);
put_driver(drv);
return dev ? to_ccwdev(dev) : NULL;
}

9
drivers/s390/net/smsgiucv_app.c
View File

@ -168,7 +168,7 @@ static int __init smsgiucv_app_init(void)
rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT);
if (rc) {
kfree(smsg_app_dev);
goto fail_put_driver;
goto fail;
}
smsg_app_dev->bus = &iucv_bus;
smsg_app_dev->parent = iucv_root;
@ -177,7 +177,7 @@ static int __init smsgiucv_app_init(void)
rc = device_register(smsg_app_dev);
if (rc) {
put_device(smsg_app_dev);
goto fail_put_driver;
goto fail;
}
/* convert sender to uppercase characters */
@ -191,12 +191,11 @@ static int __init smsgiucv_app_init(void)
rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback);
if (rc) {
device_unregister(smsg_app_dev);
goto fail_put_driver;
goto fail;
}
rc = 0;
fail_put_driver:
put_driver(smsgiucv_drv);
fail:
return rc;
}
module_init(smsgiucv_app_init);

20
drivers/ssb/main.c
View File

@ -140,19 +140,6 @@ static void ssb_device_put(struct ssb_device *dev)
put_device(dev->dev);
}
static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv)
{
if (drv)
get_driver(&drv->drv);
return drv;
}
static inline void ssb_driver_put(struct ssb_driver *drv)
{
if (drv)
put_driver(&drv->drv);
}
static int ssb_device_resume(struct device *dev)
{
struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
@ -250,11 +237,9 @@ int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx)
ssb_device_put(sdev);
continue;
}
sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver));
if (!sdrv || SSB_WARN_ON(!sdrv->remove)) {
ssb_device_put(sdev);
sdrv = drv_to_ssb_drv(sdev->dev->driver);
if (SSB_WARN_ON(!sdrv->remove))
continue;
}
sdrv->remove(sdev);
ctx->device_frozen[i] = 1;
}
@ -293,7 +278,6 @@ int ssb_devices_thaw(struct ssb_freeze_context *ctx)
dev_name(sdev->dev));
result = err;
}
ssb_driver_put(sdrv);
ssb_device_put(sdev);
}

66
drivers/usb/core/driver.c
View File

@ -71,10 +71,7 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids,
list_add_tail(&dynid->node, &dynids->list);
spin_unlock(&dynids->lock);
if (get_driver(driver)) {
retval = driver_attach(driver);
put_driver(driver);
}
retval = driver_attach(driver);
if (retval)
return retval;
@ -132,43 +129,39 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count)
}
static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
static int usb_create_newid_file(struct usb_driver *usb_drv)
static int usb_create_newid_files(struct usb_driver *usb_drv)
{
int error = 0;
if (usb_drv->no_dynamic_id)
goto exit;
if (usb_drv->probe != NULL)
if (usb_drv->probe != NULL) {
error = driver_create_file(&usb_drv->drvwrap.driver,
&driver_attr_new_id);
if (error == 0) {
error = driver_create_file(&usb_drv->drvwrap.driver,
&driver_attr_remove_id);
if (error)
driver_remove_file(&usb_drv->drvwrap.driver,
&driver_attr_new_id);
}
}
exit:
return error;
}
static void usb_remove_newid_file(struct usb_driver *usb_drv)
static void usb_remove_newid_files(struct usb_driver *usb_drv)
{
if (usb_drv->no_dynamic_id)
return;
if (usb_drv->probe != NULL)
if (usb_drv->probe != NULL) {
driver_remove_file(&usb_drv->drvwrap.driver,
&driver_attr_remove_id);
driver_remove_file(&usb_drv->drvwrap.driver,
&driver_attr_new_id);
}
static int
usb_create_removeid_file(struct usb_driver *drv)
{
int error = 0;
if (drv->probe != NULL)
error = driver_create_file(&drv->drvwrap.driver,
&driver_attr_remove_id);
return error;
}
static void usb_remove_removeid_file(struct usb_driver *drv)
{
driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id);
}
}
static void usb_free_dynids(struct usb_driver *usb_drv)
@ -183,22 +176,12 @@ static void usb_free_dynids(struct usb_driver *usb_drv)
spin_unlock(&usb_drv->dynids.lock);
}
#else
static inline int usb_create_newid_file(struct usb_driver *usb_drv)
static inline int usb_create_newid_files(struct usb_driver *usb_drv)
{
return 0;
}
static void usb_remove_newid_file(struct usb_driver *usb_drv)
{
}
static int
usb_create_removeid_file(struct usb_driver *drv)
{
return 0;
}
static void usb_remove_removeid_file(struct usb_driver *drv)
static void usb_remove_newid_files(struct usb_driver *usb_drv)
{
}
@ -875,22 +858,16 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner,
usbfs_update_special();
retval = usb_create_newid_file(new_driver);
retval = usb_create_newid_files(new_driver);
if (retval)
goto out_newid;
retval = usb_create_removeid_file(new_driver);
if (retval)
goto out_removeid;
pr_info("%s: registered new interface driver %s\n",
usbcore_name, new_driver->name);
out:
return retval;
out_removeid:
usb_remove_newid_file(new_driver);
out_newid:
driver_unregister(&new_driver->drvwrap.driver);
@ -917,10 +894,9 @@ void usb_deregister(struct usb_driver *driver)
pr_info("%s: deregistering interface driver %s\n",
usbcore_name, driver->name);
usb_remove_removeid_file(driver);
usb_remove_newid_file(driver);
usb_free_dynids(driver);
usb_remove_newid_files(driver);
driver_unregister(&driver->drvwrap.driver);
usb_free_dynids(driver);
usbfs_update_special();
}

12
drivers/usb/dwc3/dwc3-pci.c
View File

@ -171,14 +171,4 @@ MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
static int __devinit dwc3_pci_init(void)
{
return pci_register_driver(&dwc3_pci_driver);
}
module_init(dwc3_pci_init);
static void __exit dwc3_pci_exit(void)
{
pci_unregister_driver(&dwc3_pci_driver);
}
module_exit(dwc3_pci_exit);
module_pci_driver(dwc3_pci_driver);

3
drivers/w1/masters/w1-gpio.c
View File

@ -13,12 +13,11 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/w1-gpio.h>
#include <linux/gpio.h>
#include "../w1.h"
#include "../w1_int.h"
#include <asm/gpio.h>
static void w1_gpio_write_bit_dir(void *data, u8 bit)
{
struct w1_gpio_platform_data *pdata = data;

13
drivers/w1/slaves/Kconfig
View File

@ -81,6 +81,19 @@ config W1_SLAVE_DS2780
If you are unsure, say N.
config W1_SLAVE_DS2781
tristate "Dallas 2781 battery monitor chip"
depends on W1
help
If you enable this you will have the DS2781 battery monitor
chip support.
The battery monitor chip is used in many batteries/devices
as the one who is responsible for charging/discharging/monitoring
Li+ batteries.
If you are unsure, say N.
config W1_SLAVE_BQ27000
tristate "BQ27000 slave support"
depends on W1

1
drivers/w1/slaves/Makefile
View File

@ -10,4 +10,5 @@ obj-$(CONFIG_W1_SLAVE_DS2431) += w1_ds2431.o
obj-$(CONFIG_W1_SLAVE_DS2433) += w1_ds2433.o
obj-$(CONFIG_W1_SLAVE_DS2760) += w1_ds2760.o
obj-$(CONFIG_W1_SLAVE_DS2780) += w1_ds2780.o
obj-$(CONFIG_W1_SLAVE_DS2781) += w1_ds2781.o
obj-$(CONFIG_W1_SLAVE_BQ27000) += w1_bq27000.o

36
drivers/w1/slaves/w1_bq27000.c
View File

@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/power/bq27x00_battery.h>
#include "../w1.h"
#include "../w1_int.h"
@ -25,46 +26,37 @@
static int F_ID;
void w1_bq27000_write(struct device *dev, u8 buf, u8 reg)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
if (!dev) {
pr_info("Could not obtain slave dev ptr\n");
return;
}
w1_write_8(sl->master, HDQ_CMD_WRITE | reg);
w1_write_8(sl->master, buf);
}
EXPORT_SYMBOL(w1_bq27000_write);
int w1_bq27000_read(struct device *dev, u8 reg)
static int w1_bq27000_read(struct device *dev, unsigned int reg)
{
u8 val;
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
if (!dev)
return 0;
struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev);
mutex_lock(&sl->master->mutex);
w1_write_8(sl->master, HDQ_CMD_READ | reg);
val = w1_read_8(sl->master);
mutex_unlock(&sl->master->mutex);
return val;
}
EXPORT_SYMBOL(w1_bq27000_read);
static struct bq27000_platform_data bq27000_battery_info = {
.read = w1_bq27000_read,
.name = "bq27000-battery",
};
static int w1_bq27000_add_slave(struct w1_slave *sl)
{
int ret;
int id = 1;
struct platform_device *pdev;
pdev = platform_device_alloc("bq27000-battery", id);
pdev = platform_device_alloc("bq27000-battery", -1);
if (!pdev) {
ret = -ENOMEM;
return ret;
}
ret = platform_device_add_data(pdev,
&bq27000_battery_info,
sizeof(bq27000_battery_info));
pdev->dev.parent = &sl->dev;
ret = platform_device_add(pdev);

201
drivers/w1/slaves/w1_ds2781.c Normal file
View File

@ -0,0 +1,201 @@
/*
* 1-Wire implementation for the ds2781 chip
*
* Author: Renata Sayakhova <renata@oktetlabs.ru>
*
* Based on w1-ds2780 driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/idr.h>
#include "../w1.h"
#include "../w1_int.h"
#include "../w1_family.h"
#include "w1_ds2781.h"
static int w1_ds2781_do_io(struct device *dev, char *buf, int addr,
size_t count, int io)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
if (addr > DS2781_DATA_SIZE || addr < 0)
return 0;
count = min_t(int, count, DS2781_DATA_SIZE - addr);
if (w1_reset_select_slave(sl) == 0) {
if (io) {
w1_write_8(sl->master, W1_DS2781_WRITE_DATA);
w1_write_8(sl->master, addr);
w1_write_block(sl->master, buf, count);
} else {
w1_write_8(sl->master, W1_DS2781_READ_DATA);
w1_write_8(sl->master, addr);
count = w1_read_block(sl->master, buf, count);
}
}
return count;
}
int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
int io)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
int ret;
if (!dev)
return -ENODEV;
mutex_lock(&sl->master->mutex);
ret = w1_ds2781_do_io(dev, buf, addr, count, io);
mutex_unlock(&sl->master->mutex);
return ret;
}
EXPORT_SYMBOL(w1_ds2781_io);
int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr, size_t count,
int io)
{
int ret;
if (!dev)
return -ENODEV;
ret = w1_ds2781_do_io(dev, buf, addr, count, io);
return ret;
}
EXPORT_SYMBOL(w1_ds2781_io_nolock);
int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
if (!dev)
return -EINVAL;
mutex_lock(&sl->master->mutex);
if (w1_reset_select_slave(sl) == 0) {
w1_write_8(sl->master, cmd);
w1_write_8(sl->master, addr);
}
mutex_unlock(&sl->master->mutex);
return 0;
}
EXPORT_SYMBOL(w1_ds2781_eeprom_cmd);
static ssize_t w1_ds2781_read_bin(struct file *filp,
struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
return w1_ds2781_io(dev, buf, off, count, 0);
}
static struct bin_attribute w1_ds2781_bin_attr = {
.attr = {
.name = "w1_slave",
.mode = S_IRUGO,
},
.size = DS2781_DATA_SIZE,
.read = w1_ds2781_read_bin,
};
static DEFINE_IDA(bat_ida);
static int w1_ds2781_add_slave(struct w1_slave *sl)
{
int ret;
int id;
struct platform_device *pdev;
id = ida_simple_get(&bat_ida, 0, 0, GFP_KERNEL);
if (id < 0) {
ret = id;
goto noid;
}
pdev = platform_device_alloc("ds2781-battery", id);
if (!pdev) {
ret = -ENOMEM;
goto pdev_alloc_failed;
}
pdev->dev.parent = &sl->dev;
ret = platform_device_add(pdev);
if (ret)
goto pdev_add_failed;
ret = sysfs_create_bin_file(&sl->dev.kobj, &w1_ds2781_bin_attr);
if (ret)
goto bin_attr_failed;
dev_set_drvdata(&sl->dev, pdev);
return 0;
bin_attr_failed:
pdev_add_failed:
platform_device_unregister(pdev);
pdev_alloc_failed:
ida_simple_remove(&bat_ida, id);
noid:
return ret;
}
static void w1_ds2781_remove_slave(struct w1_slave *sl)
{
struct platform_device *pdev = dev_get_drvdata(&sl->dev);
int id = pdev->id;
platform_device_unregister(pdev);
ida_simple_remove(&bat_ida, id);
sysfs_remove_bin_file(&sl->dev.kobj, &w1_ds2781_bin_attr);
}
static struct w1_family_ops w1_ds2781_fops = {
.add_slave = w1_ds2781_add_slave,
.remove_slave = w1_ds2781_remove_slave,
};
static struct w1_family w1_ds2781_family = {
.fid = W1_FAMILY_DS2781,
.fops = &w1_ds2781_fops,
};
static int __init w1_ds2781_init(void)
{
ida_init(&bat_ida);
return w1_register_family(&w1_ds2781_family);
}
static void __exit w1_ds2781_exit(void)
{
w1_unregister_family(&w1_ds2781_family);
ida_destroy(&bat_ida);
}
module_init(w1_ds2781_init);
module_exit(w1_ds2781_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");
MODULE_DESCRIPTION("1-wire Driver for Maxim/Dallas DS2781 Stand-Alone Fuel Gauge IC");

136
drivers/w1/slaves/w1_ds2781.h Normal file
View File

@ -0,0 +1,136 @@
/*
* 1-Wire implementation for the ds2780 chip
*
* Author: Renata Sayakhova <renata@oktetlabs.ru>
*
* Based on w1-ds2760 driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#ifndef _W1_DS2781_H
#define _W1_DS2781_H
/* Function commands */
#define W1_DS2781_READ_DATA 0x69
#define W1_DS2781_WRITE_DATA 0x6C
#define W1_DS2781_COPY_DATA 0x48
#define W1_DS2781_RECALL_DATA 0xB8
#define W1_DS2781_LOCK 0x6A
/* Register map */
/* Register 0x00 Reserved */
#define DS2781_STATUS 0x01
#define DS2781_RAAC_MSB 0x02
#define DS2781_RAAC_LSB 0x03
#define DS2781_RSAC_MSB 0x04
#define DS2781_RSAC_LSB 0x05
#define DS2781_RARC 0x06
#define DS2781_RSRC 0x07
#define DS2781_IAVG_MSB 0x08
#define DS2781_IAVG_LSB 0x09
#define DS2781_TEMP_MSB 0x0A
#define DS2781_TEMP_LSB 0x0B
#define DS2781_VOLT_MSB 0x0C
#define DS2781_VOLT_LSB 0x0D
#define DS2781_CURRENT_MSB 0x0E
#define DS2781_CURRENT_LSB 0x0F
#define DS2781_ACR_MSB 0x10
#define DS2781_ACR_LSB 0x11
#define DS2781_ACRL_MSB 0x12
#define DS2781_ACRL_LSB 0x13
#define DS2781_AS 0x14
#define DS2781_SFR 0x15
#define DS2781_FULL_MSB 0x16
#define DS2781_FULL_LSB 0x17
#define DS2781_AE_MSB 0x18
#define DS2781_AE_LSB 0x19
#define DS2781_SE_MSB 0x1A
#define DS2781_SE_LSB 0x1B
/* Register 0x1C - 0x1E Reserved */
#define DS2781_EEPROM 0x1F
#define DS2781_EEPROM_BLOCK0_START 0x20
/* Register 0x20 - 0x2F User EEPROM */
#define DS2781_EEPROM_BLOCK0_END 0x2F
/* Register 0x30 - 0x5F Reserved */
#define DS2781_EEPROM_BLOCK1_START 0x60
#define DS2781_CONTROL 0x60
#define DS2781_AB 0x61
#define DS2781_AC_MSB 0x62
#define DS2781_AC_LSB 0x63
#define DS2781_VCHG 0x64
#define DS2781_IMIN 0x65
#define DS2781_VAE 0x66
#define DS2781_IAE 0x67
#define DS2781_AE_40 0x68
#define DS2781_RSNSP 0x69
#define DS2781_FULL_40_MSB 0x6A
#define DS2781_FULL_40_LSB 0x6B
#define DS2781_FULL_4_SLOPE 0x6C
#define DS2781_FULL_3_SLOPE 0x6D
#define DS2781_FULL_2_SLOPE 0x6E
#define DS2781_FULL_1_SLOPE 0x6F
#define DS2781_AE_4_SLOPE 0x70
#define DS2781_AE_3_SLOPE 0x71
#define DS2781_AE_2_SLOPE 0x72
#define DS2781_AE_1_SLOPE 0x73
#define DS2781_SE_4_SLOPE 0x74
#define DS2781_SE_3_SLOPE 0x75
#define DS2781_SE_2_SLOPE 0x76
#define DS2781_SE_1_SLOPE 0x77
#define DS2781_RSGAIN_MSB 0x78
#define DS2781_RSGAIN_LSB 0x79
#define DS2781_RSTC 0x7A
#define DS2781_COB 0x7B
#define DS2781_TBP34 0x7C
#define DS2781_TBP23 0x7D
#define DS2781_TBP12 0x7E
#define DS2781_EEPROM_BLOCK1_END 0x7F
/* Register 0x7D - 0xFF Reserved */
#define DS2781_FSGAIN_MSB 0xB0
#define DS2781_FSGAIN_LSB 0xB1
/* Number of valid register addresses */
#define DS2781_DATA_SIZE 0xB2
/* Status register bits */
#define DS2781_STATUS_CHGTF (1 << 7)
#define DS2781_STATUS_AEF (1 << 6)
#define DS2781_STATUS_SEF (1 << 5)
#define DS2781_STATUS_LEARNF (1 << 4)
/* Bit 3 Reserved */
#define DS2781_STATUS_UVF (1 << 2)
#define DS2781_STATUS_PORF (1 << 1)
/* Bit 0 Reserved */
/* Control register bits */
/* Bit 7 Reserved */
#define DS2781_CONTROL_NBEN (1 << 7)
#define DS2781_CONTROL_UVEN (1 << 6)
#define DS2781_CONTROL_PMOD (1 << 5)
#define DS2781_CONTROL_RNAOP (1 << 4)
#define DS1781_CONTROL_UVTH (1 << 3)
/* Bit 0 - 2 Reserved */
/* Special feature register bits */
/* Bit 1 - 7 Reserved */
#define DS2781_SFR_PIOSC (1 << 0)
/* EEPROM register bits */
#define DS2781_EEPROM_EEC (1 << 7)
#define DS2781_EEPROM_LOCK (1 << 6)
/* Bit 2 - 6 Reserved */
#define DS2781_EEPROM_BL1 (1 << 1)
#define DS2781_EEPROM_BL0 (1 << 0)
extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
int io);
extern int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr,
size_t count, int io);
extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
#endif /* !_W1_DS2781_H */

1
drivers/w1/w1_family.h
View File

@ -38,6 +38,7 @@
#define W1_EEPROM_DS2431 0x2D
#define W1_FAMILY_DS2760 0x30
#define W1_FAMILY_DS2780 0x32
#define W1_FAMILY_DS2781 0x3D
#define W1_THERM_DS28EA00 0x42
#define MAXNAMELEN 32

149
fs/debugfs/inode.c
View File

@ -23,9 +23,13 @@
#include <linux/debugfs.h>
#include <linux/fsnotify.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/parser.h>
#include <linux/magic.h>
#include <linux/slab.h>
#define DEBUGFS_DEFAULT_MODE 0755
static struct vfsmount *debugfs_mount;
static int debugfs_mount_count;
static bool debugfs_registered;
@ -125,11 +129,154 @@ static inline int debugfs_positive(struct dentry *dentry)
return dentry->d_inode && !d_unhashed(dentry);
}
struct debugfs_mount_opts {
uid_t uid;
gid_t gid;
umode_t mode;
};
enum {
Opt_uid,
Opt_gid,
Opt_mode,
Opt_err
};
static const match_table_t tokens = {
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_mode, "mode=%o"},
{Opt_err, NULL}
};
struct debugfs_fs_info {
struct debugfs_mount_opts mount_opts;
};
static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts)
{
substring_t args[MAX_OPT_ARGS];
int option;
int token;
char *p;
opts->mode = DEBUGFS_DEFAULT_MODE;
while ((p = strsep(&data, ",")) != NULL) {
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_uid:
if (match_int(&args[0], &option))
return -EINVAL;
opts->uid = option;
break;
case Opt_gid:
if (match_octal(&args[0], &option))
return -EINVAL;
opts->gid = option;
break;
case Opt_mode:
if (match_octal(&args[0], &option))
return -EINVAL;
opts->mode = option & S_IALLUGO;
break;
/*
* We might like to report bad mount options here;
* but traditionally debugfs has ignored all mount options
*/
}
}
return 0;
}
static int debugfs_apply_options(struct super_block *sb)
{
struct debugfs_fs_info *fsi = sb->s_fs_info;
struct inode *inode = sb->s_root->d_inode;
struct debugfs_mount_opts *opts = &fsi->mount_opts;
inode->i_mode &= ~S_IALLUGO;
inode->i_mode |= opts->mode;
inode->i_uid = opts->uid;
inode->i_gid = opts->gid;
return 0;
}
static int debugfs_remount(struct super_block *sb, int *flags, char *data)
{
int err;
struct debugfs_fs_info *fsi = sb->s_fs_info;
err = debugfs_parse_options(data, &fsi->mount_opts);
if (err)
goto fail;
debugfs_apply_options(sb);
fail:
return err;
}
static int debugfs_show_options(struct seq_file *m, struct dentry *root)
{
struct debugfs_fs_info *fsi = root->d_sb->s_fs_info;
struct debugfs_mount_opts *opts = &fsi->mount_opts;
if (opts->uid != 0)
seq_printf(m, ",uid=%u", opts->uid);
if (opts->gid != 0)
seq_printf(m, ",gid=%u", opts->gid);
if (opts->mode != DEBUGFS_DEFAULT_MODE)
seq_printf(m, ",mode=%o", opts->mode);
return 0;
}
static const struct super_operations debugfs_super_operations = {
.statfs = simple_statfs,
.remount_fs = debugfs_remount,
.show_options = debugfs_show_options,
};
static int debug_fill_super(struct super_block *sb, void *data, int silent)
{
static struct tree_descr debug_files[] = {{""}};
struct debugfs_fs_info *fsi;
int err;
return simple_fill_super(sb, DEBUGFS_MAGIC, debug_files);
save_mount_options(sb, data);
fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL);
sb->s_fs_info = fsi;
if (!fsi) {
err = -ENOMEM;
goto fail;
}
err = debugfs_parse_options(data, &fsi->mount_opts);
if (err)
goto fail;
err = simple_fill_super(sb, DEBUGFS_MAGIC, debug_files);
if (err)
goto fail;
sb->s_op = &debugfs_super_operations;
debugfs_apply_options(sb);
return 0;
fail:
kfree(fsi);
sb->s_fs_info = NULL;
return err;
}
static struct dentry *debug_mount(struct file_system_type *fs_type,

218
fs/sysfs/dir.c
View File

@ -22,76 +22,103 @@
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/security.h>
#include <linux/hash.h>
#include "sysfs.h"
DEFINE_MUTEX(sysfs_mutex);
DEFINE_SPINLOCK(sysfs_assoc_lock);
#define to_sysfs_dirent(X) rb_entry((X), struct sysfs_dirent, s_rb);
static DEFINE_SPINLOCK(sysfs_ino_lock);
static DEFINE_IDA(sysfs_ino_ida);
/**
* sysfs_link_sibling - link sysfs_dirent into sibling list
* sysfs_name_hash
* @ns: Namespace tag to hash
* @name: Null terminated string to hash
*
* Returns 31 bit hash of ns + name (so it fits in an off_t )
*/
static unsigned int sysfs_name_hash(const void *ns, const char *name)
{
unsigned long hash = init_name_hash();
unsigned int len = strlen(name);
while (len--)
hash = partial_name_hash(*name++, hash);
hash = ( end_name_hash(hash) ^ hash_ptr( (void *)ns, 31 ) );
hash &= 0x7fffffffU;
/* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */
if (hash < 1)
hash += 2;
if (hash >= INT_MAX)
hash = INT_MAX - 1;
return hash;
}
static int sysfs_name_compare(unsigned int hash, const void *ns,
const char *name, const struct sysfs_dirent *sd)
{
if (hash != sd->s_hash)
return hash - sd->s_hash;
if (ns != sd->s_ns)
return ns - sd->s_ns;
return strcmp(name, sd->s_name);
}
static int sysfs_sd_compare(const struct sysfs_dirent *left,
const struct sysfs_dirent *right)
{
return sysfs_name_compare(left->s_hash, left->s_ns, left->s_name,
right);
}
/**
* sysfs_link_subling - link sysfs_dirent into sibling rbtree
* @sd: sysfs_dirent of interest
*
* Link @sd into its sibling list which starts from
* Link @sd into its sibling rbtree which starts from
* sd->s_parent->s_dir.children.
*
* Locking:
* mutex_lock(sysfs_mutex)
*
* RETURNS:
* 0 on susccess -EEXIST on failure.
*/
static void sysfs_link_sibling(struct sysfs_dirent *sd)
static int sysfs_link_sibling(struct sysfs_dirent *sd)
{
struct sysfs_dirent *parent_sd = sd->s_parent;
struct rb_node **p;
struct rb_node *parent;
struct rb_node **node = &sd->s_parent->s_dir.children.rb_node;
struct rb_node *parent = NULL;
if (sysfs_type(sd) == SYSFS_DIR)
parent_sd->s_dir.subdirs++;
sd->s_parent->s_dir.subdirs++;
p = &parent_sd->s_dir.inode_tree.rb_node;
parent = NULL;
while (*p) {
parent = *p;
#define node rb_entry(parent, struct sysfs_dirent, inode_node)
if (sd->s_ino < node->s_ino) {
p = &node->inode_node.rb_left;
} else if (sd->s_ino > node->s_ino) {
p = &node->inode_node.rb_right;
} else {
printk(KERN_CRIT "sysfs: inserting duplicate inode '%lx'\n",
(unsigned long) sd->s_ino);
BUG();
}
#undef node
}
rb_link_node(&sd->inode_node, parent, p);
rb_insert_color(&sd->inode_node, &parent_sd->s_dir.inode_tree);
while (*node) {
struct sysfs_dirent *pos;
int result;
p = &parent_sd->s_dir.name_tree.rb_node;
parent = NULL;
while (*p) {
int c;
parent = *p;
#define node rb_entry(parent, struct sysfs_dirent, name_node)
c = strcmp(sd->s_name, node->s_name);
if (c < 0) {
p = &node->name_node.rb_left;
} else {
p = &node->name_node.rb_right;
}
#undef node
pos = to_sysfs_dirent(*node);
parent = *node;
result = sysfs_sd_compare(sd, pos);
if (result < 0)
node = &pos->s_rb.rb_left;
else if (result > 0)
node = &pos->s_rb.rb_right;
else
return -EEXIST;
}
rb_link_node(&sd->name_node, parent, p);
rb_insert_color(&sd->name_node, &parent_sd->s_dir.name_tree);
/* add new node and rebalance the tree */
rb_link_node(&sd->s_rb, parent, node);
rb_insert_color(&sd->s_rb, &sd->s_parent->s_dir.children);
return 0;
}
/**
* sysfs_unlink_sibling - unlink sysfs_dirent from sibling list
* sysfs_unlink_sibling - unlink sysfs_dirent from sibling rbtree
* @sd: sysfs_dirent of interest
*
* Unlink @sd from its sibling list which starts from
* Unlink @sd from its sibling rbtree which starts from
* sd->s_parent->s_dir.children.
*
* Locking:
@ -102,8 +129,7 @@ static void sysfs_unlink_sibling(struct sysfs_dirent *sd)
if (sysfs_type(sd) == SYSFS_DIR)
sd->s_parent->s_dir.subdirs--;
rb_erase(&sd->inode_node, &sd->s_parent->s_dir.inode_tree);
rb_erase(&sd->name_node, &sd->s_parent->s_dir.name_tree);
rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children);
}
/**
@ -198,7 +224,7 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
rwsem_release(&sd->dep_map, 1, _RET_IP_);
}
static int sysfs_alloc_ino(ino_t *pino)
static int sysfs_alloc_ino(unsigned int *pino)
{
int ino, rc;
@ -217,7 +243,7 @@ static int sysfs_alloc_ino(ino_t *pino)
return rc;
}
static void sysfs_free_ino(ino_t ino)
static void sysfs_free_ino(unsigned int ino)
{
spin_lock(&sysfs_ino_lock);
ida_remove(&sysfs_ino_ida, ino);
@ -402,6 +428,7 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
struct sysfs_inode_attrs *ps_iattr;
int ret;
if (!!sysfs_ns_type(acxt->parent_sd) != !!sd->s_ns) {
WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
@ -410,12 +437,12 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
return -EINVAL;
}
if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name))
return -EEXIST;
sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
sd->s_parent = sysfs_get(acxt->parent_sd);
sysfs_link_sibling(sd);
ret = sysfs_link_sibling(sd);
if (ret)
return ret;
/* Update timestamps on the parent */
ps_iattr = acxt->parent_sd->s_iattr;
@ -565,8 +592,8 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
const void *ns,
const unsigned char *name)
{
struct rb_node *p = parent_sd->s_dir.name_tree.rb_node;
struct sysfs_dirent *found = NULL;
struct rb_node *node = parent_sd->s_dir.children.rb_node;
unsigned int hash;
if (!!sysfs_ns_type(parent_sd) != !!ns) {
WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
@ -575,33 +602,21 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
return NULL;
}
while (p) {
int c;
#define node rb_entry(p, struct sysfs_dirent, name_node)
c = strcmp(name, node->s_name);
if (c < 0) {
p = node->name_node.rb_left;
} else if (c > 0) {
p = node->name_node.rb_right;
} else {
found = node;
p = node->name_node.rb_left;
}
#undef node
}
hash = sysfs_name_hash(ns, name);
while (node) {
struct sysfs_dirent *sd;
int result;
if (found) {
while (found->s_ns != ns) {
p = rb_next(&found->name_node);
if (!p)
return NULL;
found = rb_entry(p, struct sysfs_dirent, name_node);
if (strcmp(name, found->s_name))
return NULL;
}
sd = to_sysfs_dirent(node);
result = sysfs_name_compare(hash, ns, name, sd);
if (result < 0)
node = node->rb_left;
else if (result > 0)
node = node->rb_right;
else
return sd;
}
return found;
return NULL;
}
/**
@ -804,9 +819,9 @@ static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd)
pr_debug("sysfs %s: removing dir\n", dir_sd->s_name);
sysfs_addrm_start(&acxt, dir_sd);
pos = rb_first(&dir_sd->s_dir.inode_tree);
pos = rb_first(&dir_sd->s_dir.children);
while (pos) {
struct sysfs_dirent *sd = rb_entry(pos, struct sysfs_dirent, inode_node);
struct sysfs_dirent *sd = to_sysfs_dirent(pos);
pos = rb_next(pos);
if (sysfs_type(sd) != SYSFS_DIR)
sysfs_remove_one(&acxt, sd);
@ -863,6 +878,7 @@ int sysfs_rename(struct sysfs_dirent *sd,
dup_name = sd->s_name;
sd->s_name = new_name;
sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name);
}
/* Move to the appropriate place in the appropriate directories rbtree. */
@ -919,38 +935,36 @@ static int sysfs_dir_release(struct inode *inode, struct file *filp)
}
static struct sysfs_dirent *sysfs_dir_pos(const void *ns,
struct sysfs_dirent *parent_sd, ino_t ino, struct sysfs_dirent *pos)
struct sysfs_dirent *parent_sd, loff_t hash, struct sysfs_dirent *pos)
{
if (pos) {
int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) &&
pos->s_parent == parent_sd &&
ino == pos->s_ino;
hash == pos->s_hash;
sysfs_put(pos);
if (!valid)
pos = NULL;
}
if (!pos && (ino > 1) && (ino < INT_MAX)) {
struct rb_node *p = parent_sd->s_dir.inode_tree.rb_node;
while (p) {
#define node rb_entry(p, struct sysfs_dirent, inode_node)
if (ino < node->s_ino) {
pos = node;
p = node->inode_node.rb_left;
} else if (ino > node->s_ino) {
p = node->inode_node.rb_right;
} else {
pos = node;
if (!pos && (hash > 1) && (hash < INT_MAX)) {
struct rb_node *node = parent_sd->s_dir.children.rb_node;
while (node) {
pos = to_sysfs_dirent(node);
if (hash < pos->s_hash)
node = node->rb_left;
else if (hash > pos->s_hash)
node = node->rb_right;
else
break;
}
#undef node
}
}
/* Skip over entries in the wrong namespace */
while (pos && pos->s_ns != ns) {
struct rb_node *p = rb_next(&pos->inode_node);
if (!p)
struct rb_node *node = rb_next(&pos->s_rb);
if (!node)
pos = NULL;
else
pos = rb_entry(p, struct sysfs_dirent, inode_node);
pos = to_sysfs_dirent(node);
}
return pos;
}
@ -960,11 +974,11 @@ static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns,
{
pos = sysfs_dir_pos(ns, parent_sd, ino, pos);
if (pos) do {
struct rb_node *p = rb_next(&pos->inode_node);
if (!p)
struct rb_node *node = rb_next(&pos->s_rb);
if (!node)
pos = NULL;
else
pos = rb_entry(p, struct sysfs_dirent, inode_node);
pos = to_sysfs_dirent(node);
} while (pos && pos->s_ns != ns);
return pos;
}
@ -1006,7 +1020,7 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
len = strlen(name);
ino = pos->s_ino;
type = dt_type(pos);
filp->f_pos = ino;
filp->f_pos = pos->s_hash;
filp->private_data = sysfs_get(pos);
mutex_unlock(&sysfs_mutex);

11
fs/sysfs/inode.c
View File

@ -136,12 +136,13 @@ static int sysfs_sd_setsecdata(struct sysfs_dirent *sd, void **secdata, u32 *sec
void *old_secdata;
size_t old_secdata_len;
iattrs = sd->s_iattr;
if (!iattrs)
iattrs = sysfs_init_inode_attrs(sd);
if (!iattrs)
return -ENOMEM;
if (!sd->s_iattr) {
sd->s_iattr = sysfs_init_inode_attrs(sd);
if (!sd->s_iattr)
return -ENOMEM;
}
iattrs = sd->s_iattr;
old_secdata = iattrs->ia_secdata;
old_secdata_len = iattrs->ia_secdata_len;

2
fs/sysfs/mount.c
View File

@ -36,7 +36,7 @@ struct sysfs_dirent sysfs_root = {
.s_name = "",
.s_count = ATOMIC_INIT(1),
.s_flags = SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT),
.s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
.s_mode = S_IFDIR | S_IRUGO | S_IXUGO,
.s_ino = 1,
};

17
fs/sysfs/sysfs.h
View File

@ -20,9 +20,8 @@ struct sysfs_elem_dir {
struct kobject *kobj;
unsigned long subdirs;
struct rb_root inode_tree;
struct rb_root name_tree;
/* children rbtree starts here and goes through sd->s_rb */
struct rb_root children;
};
struct sysfs_elem_symlink {
@ -62,8 +61,7 @@ struct sysfs_dirent {
struct sysfs_dirent *s_parent;
const char *s_name;
struct rb_node inode_node;
struct rb_node name_node;
struct rb_node s_rb;
union {
struct completion *completion;
@ -71,6 +69,7 @@ struct sysfs_dirent {
} u;
const void *s_ns; /* namespace tag */
unsigned int s_hash; /* ns + name hash */
union {
struct sysfs_elem_dir s_dir;
struct sysfs_elem_symlink s_symlink;
@ -78,9 +77,9 @@ struct sysfs_dirent {
struct sysfs_elem_bin_attr s_bin_attr;
};
unsigned int s_flags;
unsigned short s_flags;
umode_t s_mode;
ino_t s_ino;
unsigned int s_ino;
struct sysfs_inode_attrs *s_iattr;
};
@ -95,11 +94,11 @@ struct sysfs_dirent {
#define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR)
/* identify any namespace tag on sysfs_dirents */
#define SYSFS_NS_TYPE_MASK 0xff00
#define SYSFS_NS_TYPE_MASK 0xf00
#define SYSFS_NS_TYPE_SHIFT 8
#define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK)
#define SYSFS_FLAG_REMOVED 0x020000
#define SYSFS_FLAG_REMOVED 0x02000
static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
{

1
include/acpi/processor.h
View File

@ -225,6 +225,7 @@ struct acpi_processor_errata {
} piix4;
};
extern void acpi_processor_load_module(struct acpi_processor *pr);
extern int acpi_processor_preregister_performance(struct
acpi_processor_performance
__percpu *performance);

1
include/linux/connector.h
View File

@ -43,6 +43,7 @@
#define CN_IDX_DRBD 0x8
#define CN_VAL_DRBD 0x1
#define CN_KVP_IDX 0x9 /* HyperV KVP */
#define CN_KVP_VAL 0x1 /* queries from the kernel */
#define CN_NETLINK_USERS 10 /* Highest index + 1 */

7
include/linux/cpu.h
View File

@ -44,6 +44,13 @@ extern ssize_t arch_cpu_release(const char *, size_t);
#endif
struct notifier_block;
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
extern int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env);
extern ssize_t arch_print_cpu_modalias(struct device *dev,
struct device_attribute *attr,
char *bufptr);
#endif
/*
* CPU notifier priorities.
*/

10
include/linux/device.h
View File

@ -238,8 +238,6 @@ struct device_driver {
extern int __must_check driver_register(struct device_driver *drv);
extern void driver_unregister(struct device_driver *drv);
extern struct device_driver *get_driver(struct device_driver *drv);
extern void put_driver(struct device_driver *drv);
extern struct device_driver *driver_find(const char *name,
struct bus_type *bus);
extern int driver_probe_done(void);
@ -946,14 +944,14 @@ int _dev_info(const struct device *dev, const char *fmt, ...)
#define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg)
#if defined(DEBUG)
#define dev_dbg(dev, format, arg...) \
dev_printk(KERN_DEBUG, dev, format, ##arg)
#elif defined(CONFIG_DYNAMIC_DEBUG)
#if defined(CONFIG_DYNAMIC_DEBUG)
#define dev_dbg(dev, format, ...) \
do { \
dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
} while (0)
#elif defined(DEBUG)
#define dev_dbg(dev, format, arg...) \
dev_printk(KERN_DEBUG, dev, format, ##arg)
#else
#define dev_dbg(dev, format, arg...) \
({ \

19
include/linux/dynamic_debug.h
View File

@ -15,20 +15,24 @@ struct _ddebug {
const char *function;
const char *filename;
const char *format;
unsigned int lineno:24;
unsigned int lineno:18;
/*
* The flags field controls the behaviour at the callsite.
* The bits here are changed dynamically when the user
* writes commands to <debugfs>/dynamic_debug/control
*/
#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */
#define _DPRINTK_FLAGS_NONE 0
#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */
#define _DPRINTK_FLAGS_INCL_MODNAME (1<<1)
#define _DPRINTK_FLAGS_INCL_FUNCNAME (1<<2)
#define _DPRINTK_FLAGS_INCL_LINENO (1<<3)
#define _DPRINTK_FLAGS_INCL_TID (1<<4)
#if defined DEBUG
#define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT
#else
#define _DPRINTK_FLAGS_DEFAULT 0
#endif
unsigned int flags:8;
char enabled;
} __attribute__((aligned(8)));
@ -62,21 +66,20 @@ int __dynamic_netdev_dbg(struct _ddebug *descriptor,
.format = (fmt), \
.lineno = __LINE__, \
.flags = _DPRINTK_FLAGS_DEFAULT, \
.enabled = false, \
}
#define dynamic_pr_debug(fmt, ...) \
do { \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (unlikely(descriptor.enabled)) \
if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
__dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
##__VA_ARGS__); \
} while (0)
#define dynamic_dev_dbg(dev, fmt, ...) \
do { \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (unlikely(descriptor.enabled)) \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
__dynamic_dev_dbg(&descriptor, dev, fmt, \
##__VA_ARGS__); \
} while (0)
@ -84,7 +87,7 @@ do { \
#define dynamic_netdev_dbg(dev, fmt, ...) \
do { \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (unlikely(descriptor.enabled)) \
if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
__dynamic_netdev_dbg(&descriptor, dev, fmt, \
##__VA_ARGS__); \
} while (0)

1
include/linux/errno.h
View File

@ -16,6 +16,7 @@
#define ERESTARTNOHAND 514 /* restart if no handler.. */
#define ENOIOCTLCMD 515 /* No ioctl command */
#define ERESTART_RESTARTBLOCK 516 /* restart by calling sys_restart_syscall */
#define EPROBE_DEFER 517 /* Driver requests probe retry */
/* Defined for the NFSv3 protocol */
#define EBADHANDLE 521 /* Illegal NFS file handle */

173
include/linux/hyperv.h
View File

@ -25,6 +25,173 @@
#ifndef _HYPERV_H
#define _HYPERV_H
#include <linux/types.h>
/*
* An implementation of HyperV key value pair (KVP) functionality for Linux.
*
*
* Copyright (C) 2010, Novell, Inc.
* Author : K. Y. Srinivasan <ksrinivasan@novell.com>
*
*/
/*
* Maximum value size - used for both key names and value data, and includes
* any applicable NULL terminators.
*
* Note: This limit is somewhat arbitrary, but falls easily within what is
* supported for all native guests (back to Win 2000) and what is reasonable
* for the IC KVP exchange functionality. Note that Windows Me/98/95 are
* limited to 255 character key names.
*
* MSDN recommends not storing data values larger than 2048 bytes in the
* registry.
*
* Note: This value is used in defining the KVP exchange message - this value
* cannot be modified without affecting the message size and compatibility.
*/
/*
* bytes, including any null terminators
*/
#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048)
/*
* Maximum key size - the registry limit for the length of an entry name
* is 256 characters, including the null terminator
*/
#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512)
/*
* In Linux, we implement the KVP functionality in two components:
* 1) The kernel component which is packaged as part of the hv_utils driver
* is responsible for communicating with the host and responsible for
* implementing the host/guest protocol. 2) A user level daemon that is
* responsible for data gathering.
*
* Host/Guest Protocol: The host iterates over an index and expects the guest
* to assign a key name to the index and also return the value corresponding to
* the key. The host will have atmost one KVP transaction outstanding at any
* given point in time. The host side iteration stops when the guest returns
* an error. Microsoft has specified the following mapping of key names to
* host specified index:
*
* Index Key Name
* 0 FullyQualifiedDomainName
* 1 IntegrationServicesVersion
* 2 NetworkAddressIPv4
* 3 NetworkAddressIPv6
* 4 OSBuildNumber
* 5 OSName
* 6 OSMajorVersion
* 7 OSMinorVersion
* 8 OSVersion
* 9 ProcessorArchitecture
*
* The Windows host expects the Key Name and Key Value to be encoded in utf16.
*
* Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the
* data gathering functionality in a user mode daemon. The user level daemon
* is also responsible for binding the key name to the index as well. The
* kernel and user-level daemon communicate using a connector channel.
*
* The user mode component first registers with the
* the kernel component. Subsequently, the kernel component requests, data
* for the specified keys. In response to this message the user mode component
* fills in the value corresponding to the specified key. We overload the
* sequence field in the cn_msg header to define our KVP message types.
*
*
* The kernel component simply acts as a conduit for communication between the
* Windows host and the user-level daemon. The kernel component passes up the
* index received from the Host to the user-level daemon. If the index is
* valid (supported), the corresponding key as well as its
* value (both are strings) is returned. If the index is invalid
* (not supported), a NULL key string is returned.
*/
/*
* Registry value types.
*/
#define REG_SZ 1
#define REG_U32 4
#define REG_U64 8
enum hv_kvp_exchg_op {
KVP_OP_GET = 0,
KVP_OP_SET,
KVP_OP_DELETE,
KVP_OP_ENUMERATE,
KVP_OP_REGISTER,
KVP_OP_COUNT /* Number of operations, must be last. */
};
enum hv_kvp_exchg_pool {
KVP_POOL_EXTERNAL = 0,
KVP_POOL_GUEST,
KVP_POOL_AUTO,
KVP_POOL_AUTO_EXTERNAL,
KVP_POOL_AUTO_INTERNAL,
KVP_POOL_COUNT /* Number of pools, must be last. */
};
struct hv_kvp_hdr {
__u8 operation;
__u8 pool;
__u16 pad;
} __attribute__((packed));
struct hv_kvp_exchg_msg_value {
__u32 value_type;
__u32 key_size;
__u32 value_size;
__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
union {
__u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
__u32 value_u32;
__u64 value_u64;
};
} __attribute__((packed));
struct hv_kvp_msg_enumerate {
__u32 index;
struct hv_kvp_exchg_msg_value data;
} __attribute__((packed));
struct hv_kvp_msg_get {
struct hv_kvp_exchg_msg_value data;
};
struct hv_kvp_msg_set {
struct hv_kvp_exchg_msg_value data;
};
struct hv_kvp_msg_delete {
__u32 key_size;
__u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
};
struct hv_kvp_register {
__u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
};
struct hv_kvp_msg {
struct hv_kvp_hdr kvp_hdr;
union {
struct hv_kvp_msg_get kvp_get;
struct hv_kvp_msg_set kvp_set;
struct hv_kvp_msg_delete kvp_delete;
struct hv_kvp_msg_enumerate kvp_enum_data;
struct hv_kvp_register kvp_register;
} body;
} __attribute__((packed));
#ifdef __KERNEL__
#include <linux/scatterlist.h>
#include <linux/list.h>
#include <linux/uuid.h>
@ -785,6 +952,7 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver);
#define HV_S_OK 0x00000000
#define HV_E_FAIL 0x80004005
#define HV_S_CONT 0x80070103
#define HV_ERROR_NOT_SUPPORTED 0x80070032
#define HV_ERROR_MACHINE_LOCKED 0x800704F7
@ -870,4 +1038,9 @@ struct hyperv_service_callback {
extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *,
struct icmsg_negotiate *, u8 *);
int hv_kvp_init(struct hv_util_service *);
void hv_kvp_deinit(void);
void hv_kvp_onchannelcallback(void *);
#endif /* __KERNEL__ */
#endif /* _HYPERV_H */

21
include/linux/mod_devicetable.h
View File

@ -560,4 +560,25 @@ struct amba_id {
#endif
};
/*
* Match x86 CPUs for CPU specific drivers.
* See documentation of "x86_match_cpu" for details.
*/
struct x86_cpu_id {
__u16 vendor;
__u16 family;
__u16 model;
__u16 feature; /* bit index */
kernel_ulong_t driver_data;
};
#define X86_FEATURE_MATCH(x) \
{ X86_VENDOR_ANY, X86_FAMILY_ANY, X86_MODEL_ANY, x }
#define X86_VENDOR_ANY 0xffff
#define X86_FAMILY_ANY 0
#define X86_MODEL_ANY 0
#define X86_FEATURE_ANY 0 /* Same as FPU, you can't test for that */
#endif /* LINUX_MOD_DEVICETABLE_H */

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