Commit Graph

83166 Commits

Author SHA1 Message Date
David Daney
1f3dc6d764 mips/kvm: Fix ABI for use of FPU.
Define a non-empty struct kvm_fpu.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-06-03 10:58:50 +03:00
Linus Torvalds
b91fd4d5aa PCI updates for v3.10:
Moorestown
       Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
   Hotplug
       PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check
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Merge tag 'pci-v3.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Here are some more fixes for v3.10.  The Moorestown update broke Intel
  Medfield devices, so I reverted it.  The acpiphp change fixes a
  regression: we broke hotplug notifications to host bridges when we
  split acpiphp into the host-bridge related part and the
  endpoint-related part.

  Moorestown
      Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  Hotplug
      PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check"

* tag 'pci-v3.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check
2013-05-23 13:50:53 -07:00
Linus Torvalds
b64194068b USB fixes for 3.10-rc2
Here are a number of tiny USB bugfixes / new device ids for 3.10-rc2
 
 The majority of these are USB gadget fixes, but they are all small.
 Other than that, some USB host controller fixes, and USB serial driver
 fixes for problems reported with them.
 
 Also hopefully a fixed up USB_OTG Kconfig dependancy, that one seems to
 be almost impossible to get right for all of the different platforms
 these days.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are a number of tiny USB bugfixes / new device ids for 3.10-rc2

  The majority of these are USB gadget fixes, but they are all small.
  Other than that, some USB host controller fixes, and USB serial driver
  fixes for problems reported with them.

  Also hopefully a fixed up USB_OTG Kconfig dependancy, that one seems
  to be almost impossible to get right for all of the different
  platforms these days."

* tag 'usb-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (56 commits)
  USB: cxacru: potential underflow in cxacru_cm_get_array()
  USB: ftdi_sio: Add support for Newport CONEX motor drivers
  USB: option: add device IDs for Dell 5804 (Novatel E371) WWAN card
  usb: ohci: fix goto wrong tag in err case
  usb: isp1760-if: fix memleak when platform_get_resource fail
  usb: ehci-s5p: fix memleak when fallback to pdata
  USB: serial: clean up chars_in_buffer
  USB: ti_usb_3410_5052: fix chars_in_buffer overhead
  USB: io_ti: fix chars_in_buffer overhead
  USB: ftdi_sio: fix chars_in_buffer overhead
  USB: ftdi_sio: clean up get_modem_status
  USB: serial: add generic wait_until_sent implementation
  USB: serial: add wait_until_sent operation
  USB: set device dma_mask without reference to global data
  USB: Blacklisted Cinterion's PLxx WWAN Interface
  usb: option: Add Telewell TW-LTE 4G
  USB: EHCI: remove bogus #error
  USB: reset resume quirk needed by a hub
  USB: usb-stor: realtek_cr: Fix compile error
  usb, chipidea: fix link error when USB_EHCI_HCD is a module
  ...
2013-05-23 09:23:32 -07:00
Linus Torvalds
72dd4e7980 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm bugfixes from Gleb Natapov.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
  KVM/MIPS32: Move include/asm/kvm.h => include/uapi/asm/kvm.h since it is a user visible API.
  KVM: take over co-maintainership from Marcelo, fix MAINTAINERS entry
2013-05-23 09:18:08 -07:00
Linus Torvalds
101b82f56d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 update from Hans-Christian Egtvedt:
 "wow, it has gone 10 releases since my last request :("

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
  avr32: fix building warnings caused by redefinitions of HZ
  avr32: fix relocation check for signed 18-bit offset
  avr32: move NODES_SHIFT into Kconfig and delete numnodes.h
2013-05-22 18:06:57 -07:00
Linus Torvalds
3cb7a59fd8 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS update from Ralf Baechle:
 - Fix a build error if <linux/printk.h> is included without
   <linux/linkage.h> having been included before.
 - Cleanup and fix the damage done by the generic idle loop patch.
 - A kprobes fix that brings the MIPS code in line with what other
   architectures are for quite a while already.
 - Wire up the native getdents64(2) syscall for 64 bit - for some reason
   it was only for the compat ABIs.  This has been reported to cause an
   application issue.  This turned out bigger than I meant but the wait
   instruction support code was driving me nuts.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: N64: Wire getdents64(2)
  kprobes/mips: Fix to check double free of insn slot
  MIPS: Idle: Break r4k_wait into two functions and fix it.
  MIPS: Idle: Do address fiddlery in helper functions.
  MIPS: Idle: Consolidate all declarations in <asm/idle.h>.
  MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations.
  MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait.
  MIPS: Idle: Make call of function pointer readable.
  MIPS: Idle: Consistently reformat inline assembler.
  MIPS: Idle: cleaup SMTC idle hook as per Linux coding style.
  MIPS: Consolidate idle loop / WAIT instruction support in a single file.
  MIPS: clock.h: Remove declaration of cpu_wait.
  Add include dependencies to <linux/printk.h>.
  MIPS: Rewrite pfn_valid to work in modules, too.
2013-05-22 18:05:45 -07:00
Jiang Liu
0c9b5a317b avr32: fix building warnings caused by redefinitions of HZ
As suggested by David Howells <dhowells@redhat.com>, use
asm-generic/param.h and uapi/asm-generic/param.h for AVR32.

It also fixes building warnings caused by redefinitions of HZ:
In file included from /ws/linux/kernel/linux.git/include/uapi/linux/param.h:4,
                 from include/linux/timex.h:63,
                 from include/linux/jiffies.h:8,
                 from include/linux/ktime.h:25,
                 from include/linux/timer.h:5,
                 from include/linux/workqueue.h:8,
                 from include/linux/srcu.h:34,
                 from include/linux/notifier.h:15,
                 from include/linux/memory_hotplug.h:6,
                 from include/linux/mmzone.h:777,
                 from include/linux/gfp.h:4,
                 from arch/avr32/mm/init.c:10:
/ws/linux/kernel/linux.git/arch/avr32/include/asm/param.h:6:1: warning: "HZ" redefined
In file included from /ws/linux/kernel/linux.git/arch/avr32/include/asm/param.h:4,
                 from /ws/linux/kernel/linux.git/include/uapi/linux/param.h:4,
                 from include/linux/timex.h:63,
                 from include/linux/jiffies.h:8,
                 from include/linux/ktime.h:25,
                 from include/linux/timer.h:5,
                 from include/linux/workqueue.h:8,
                 from include/linux/srcu.h:34,
                 from include/linux/notifier.h:15,
                 from include/linux/memory_hotplug.h:6,
                 from include/linux/mmzone.h:777,
                 from include/linux/gfp.h:4,
                 from arch/avr32/mm/init.c:10:
/ws/linux/kernel/linux.git/arch/avr32/include/uapi/asm/param.h:6:1: warning: this is the location of the previous definition

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
2013-05-22 21:05:44 +02:00
Aron Xu
dec33abaaf MIPS: N64: Wire getdents64(2)
As a relatively new ABI, N64 only had getdents syscall while other modern
architectures have getdents64.

This was noticed when Python 3.3 shifted to the latter one for aarch64.

[ralf@linux-mips.org: The history of getdents64 is a little complicated.
Commit 1a1d77dd589de5a567fa95e36aa6999c704ceca4 [Merge with 2.4.0-test7.]
added N64 getdents(2) to arch/mips64/kernel/scall_64.S as syscall 5213,
then dropped again in 578720675c44e54e8aa7c68f6dce59ed37ce3d3b [Overhaul
of the 64-bit syscall interface.  Now heritage free.] for 2.5.18 in 2002.]

Signed-off-by: Aron Xu <aron@debian.org>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5285/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 15:37:58 +02:00
Masami Hiramatsu
22047b8517 kprobes/mips: Fix to check double free of insn slot
Fix to check double free of insn_slot at arch_remove_kprobe
as other arches do.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Maneesh Soni <manesoni@cisco.com>
Cc: Victor Kamensky <kamensky@cisco.com>
Cc: linux-mips@linux-mips.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: yrl.pp-manager.tt@hitachi.com
Cc: systemtap@sourceware.org
Patchwork: https://patchwork.linux-mips.org/patch/5293/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 12:48:30 +02:00
Sanjay Lal
6d17c0d1e8 KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
- As suggested by Gleb, wrap calls to gfn_to_pfn() with srcu_read_lock/unlock().
  Memory slots should be acccessed from a SRCU read section.
- kvm_mips_map_page() now returns an error code to it's callers, instead of
  calling panic() if it cannot find a mapping for a particular gfn.

Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-05-22 11:44:09 +03:00
Sanjay Lal
ba86e4dda7 KVM/MIPS32: Move include/asm/kvm.h => include/uapi/asm/kvm.h since it is a user visible API.
Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-05-22 11:42:53 +03:00
Ralf Baechle
087d990b37 MIPS: Idle: Break r4k_wait into two functions and fix it.
local_irq_enable() may expand into very different code, so it rather should
stay in C.  Also this keeps the assembler code size constant which keeps
the rollback code simple.  So it's best to split r4k_wait into two parts,
one C and one assembler.

Finally add the local_irq_enable() to r4k_wait to ensure the WAIT
instruction in __r4k_wait() will work properly.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:28 +02:00
Ralf Baechle
f94d9a8ef9 MIPS: Idle: Do address fiddlery in helper functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:28 +02:00
Ralf Baechle
bdc92d74e0 MIPS: Idle: Consolidate all declarations in <asm/idle.h>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:27 +02:00
Ralf Baechle
d882f07a83 MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations.
The generic idle loop has already disabled interrupts so this is redundant.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:27 +02:00
Ralf Baechle
fb40bc3e94 MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait.
Without this, the

    WARN_ON_ONCE(irqs_disabled());

in the idle loop will be triggered.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:26 +02:00
Ralf Baechle
c9b6869dbb MIPS: Idle: Make call of function pointer readable.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:26 +02:00
Ralf Baechle
f91a148aa2 MIPS: Idle: Consistently reformat inline assembler.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:25 +02:00
Ralf Baechle
00baf8576c MIPS: Idle: cleaup SMTC idle hook as per Linux coding style.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:25 +02:00
Ralf Baechle
49f2ec91e1 MIPS: Consolidate idle loop / WAIT instruction support in a single file.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:25 +02:00
Ralf Baechle
1a461c5bdc MIPS: clock.h: Remove declaration of cpu_wait.
Duplicate and has no business in this header file.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22 01:34:25 +02:00
Linus Torvalds
c4ad180f0e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 update from Martin Schwidefsky:
 "An additional sysfs attribute for channel paths and a couple of bux
  fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pgtable: fix ipte notify bit
  s390/xpram: mark xpram as non-rotational
  s390/smp: fix cpu re-scan vs. cpu state
  s390/cio: add channel ID sysfs attribute
  s390/ftrace: fix mcount adjustment
  s390: fix gmap_ipte_notifier vs. software dirty pages
  s390: disable pfmf for clear page instruction
  s390/disassembler: prevent endless loop in print_fn_code()
  s390: remove non existent reference to GENERIC_KERNEL_THREAD
2013-05-21 09:36:46 -07:00
Stephen Boyd
aa03381046 ARM: smp: Drop RCU_NONIDLE usage in cpu_die()
Before f7b861b7a6 ("arm: Use generic idle loop") ARM would kill the
CPU within the rcu idle section.  Now that the rcu_idle_enter()/exit()
pair have been pushed lower down in the idle loop this is no longer true
and so using RCU_NONIDLE here is no longer necessary and also harmful
because RCU is not actually idle at this point.

Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-21 08:56:21 -07:00
Linus Torvalds
5e427ec2d0 x86: Fix bit corruption at CPU resume time
In commit 78d77df715 ("x86-64, init: Do not set NX bits on non-NX
capable hardware") we added the early_pmd_flags that gets the NX bit set
when a CPU supports NX. However, the new variable was marked __initdata,
because the main _use_ of this is in an __init routine.

However, the bit setting happens from secondary_startup_64(), which is
called not only at bootup, but on every secondary CPU start.  Including
resuming from STR and at CPU hotplug time.  So the value cannot be
__initdata.

Reported-bisected-and-tested-by: Michal Hocko <mhocko@suse.cz>
Cc: stable@vger.kernel.org # v3.9
Acked-by: Peter Anvin <hpa@linux.intel.com>
Cc: Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-20 11:36:03 -07:00
Bjorn Helgaas
f3f011750a Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
This reverts commit dd72be99d1.

Andy Shevchenko <andy.shevchenko@gmail.com> reported that this commit
broke Intel Medfield devices.

Reference: https://lkml.kernel.org/r/CAHp75Vdf6gFZChS47=grUygHBDWcoOWDYPzw+Zj5bdVCWj85Jw@mail.gmail.com
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-05-20 10:20:21 -06:00
Ralf Baechle
8b9232141b MIPS: Rewrite pfn_valid to work in modules, too.
This fixes:

  MODPOST 393 modules
ERROR: "min_low_pfn" [arch/mips/kvm/kvm.ko] undefined!
make[3]: *** [__modpost] Error 1

It would have been possible to just export min_low_pfn but in the end
pfn_valid should return 1 for any pfn argument for which a struct page
exists so using min_low_pfn was wrong anyway.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-19 09:56:58 +02:00
Linus Torvalds
e51066824a Merge branch 'devm_no_resource_check' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull devm usage cleanup from Wolfram Sang:
 "Lately, I have been experimenting how to improve the devm interface to
  make writing device drivers easier and less error prone while also
  getting rid of its subtle issues.  I think it has more potential but
  still needs work and definately conistency, especiall in its usage.

  The first thing I come up with is a low hanging fruit regarding
  devm_ioremap_resouce().  This function already checks if the passed
  resource is valid and gives an error message if not.  So, we can
  remove similar checks from the drivers and get rid of a bit of code
  and a number of inconsistent error strings.

  This series only removes the unneeded check iff devm_ioremap_resource
  follows platform_get_resource directly.  The previous version tried to
  shuffle code if needed, too, what lead to an embarrasing bug.  It
  turned out to me that shuffling code for all cases found will make the
  automated script too complex, so I am unsure if an automated cleanup
  is the proper tool for this case.  Removing the easy stuff seems
  worthwhile to me, though.

  Despite various architectures and platform dependencies, I managed to
  compile test 45 out of 57 modified files locally using heuristics and
  defconfigs."

Pulled because: 296 deletions, 0 additions.

* 'devm_no_resource_check' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (33 commits)
  sound/soc/kirkwood: don't check resource with devm_ioremap_resource
  sound/soc/fsl: don't check resource with devm_ioremap_resource
  arch/mips/lantiq/xway: don't check resource with devm_ioremap_resource
  arch/arm/plat-samsung: don't check resource with devm_ioremap_resource
  arch/arm/mach-tegra: don't check resource with devm_ioremap_resource
  drivers/watchdog: don't check resource with devm_ioremap_resource
  drivers/w1/masters: don't check resource with devm_ioremap_resource
  drivers/video/omap2/dss: don't check resource with devm_ioremap_resource
  drivers/video/omap2: don't check resource with devm_ioremap_resource
  drivers/usb/phy: don't check resource with devm_ioremap_resource
  drivers/usb/host: don't check resource with devm_ioremap_resource
  drivers/usb/gadget: don't check resource with devm_ioremap_resource
  drivers/usb/chipidea: don't check resource with devm_ioremap_resource
  drivers/thermal: don't check resource with devm_ioremap_resource
  drivers/staging/nvec: don't check resource with devm_ioremap_resource
  drivers/staging/dwc2: don't check resource with devm_ioremap_resource
  drivers/spi: don't check resource with devm_ioremap_resource
  drivers/rtc: don't check resource with devm_ioremap_resource
  drivers/pwm: don't check resource with devm_ioremap_resource
  drivers/pinctrl: don't check resource with devm_ioremap_resource
  ...
2013-05-18 10:54:54 -07:00
Linus Torvalds
3c6a279ffc Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "Patching up across the field.  The reversion of the two ASID patches
  is particularly important as it was breaking many platforms."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: use the dwc2 driver for the rt305x USB controller
  MIPS: Extract schedule_mfi info from __schedule
  MIPS: Fix sibling call handling in get_frame_info
  MIPS: MSP71xx: remove inline marking of EXPORT_SYMBOL functions
  MIPS: Make virt_to_phys() work for all unmapped addresses.
  MIPS: Fix build error for crash_dump.c in 3.10-rc1
  MIPS: Xway: Fix clk leak
  Revert "MIPS: Allow ASID size to be determined at boot time."
  Revert "MIPS: microMIPS: Support dynamic ASID sizing."
2013-05-18 10:36:37 -07:00
Linus Torvalds
f71df63380 Fixes for duplicate definition of early_console, kernel/time/Kconfig
include, __flush_dcache_all() set/way computing, debug (locking, bit
 testing). The of_platform_populate() was moved to an arch_init_call() to
 allow subsys_init_call() drivers to probe the DT.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64

Pull arm64 fixes from Catalin Marinas:
 "Fixes for duplicate definition of early_console, kernel/time/Kconfig
  include, __flush_dcache_all() set/way computing, debug (locking, bit
  testing).  The of_platform_populate() was moved to an arch_init_call()
  to allow subsys_init_call() drivers to probe the DT."

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: debug: fix mdscr.ss check when enabling debug exceptions
  arm64: Do not source kernel/time/Kconfig explicitly
  arm64: mm: Fix operands of clz in __flush_dcache_all
  arm64: Invoke the of_platform_populate() at arch_initcall() level
  arm64: debug: clear mdscr_el1 instead of taking the OS lock
  arm64: Fix duplicate definition of early_console
2013-05-18 10:20:46 -07:00
Wolfram Sang
02fdb79f36 arch/mips/lantiq/xway: don't check resource with devm_ioremap_resource
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: John Crispin <blogic@openwrt.org>
2013-05-18 11:59:34 +02:00
Wolfram Sang
c818b58e63 arch/arm/plat-samsung: don't check resource with devm_ioremap_resource
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-05-18 11:59:33 +02:00
Wolfram Sang
d7fc0dde96 arch/arm/mach-tegra: don't check resource with devm_ioremap_resource
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
2013-05-18 11:58:05 +02:00
Matthijs Kooijman
2792d42fe6 MIPS: ralink: use the dwc2 driver for the rt305x USB controller
This sets up the devicetree file for the rt3050 chip series and rt3052
eval board to use the right compatible string for the dwc2 driver.

Acked-by: John Crispin <blogic@openwrt.org>
Cc: blogic@openwrt.org
Cc: linux-mips@linux-mips.org
Cc: Matthijs Kooijman <matthijs@stdin.nl>
Patchwork: https://patchwork.linux-mips.org/patch/5226/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 21:16:59 +02:00
Tony Wu
5000653e92 MIPS: Extract schedule_mfi info from __schedule
schedule_mfi is supposed to be extracted from schedule(), and
is used in thread_saved_pc and get_wchan.

But, after optimization, schedule() is reduced to a sibling
call to __schedule(), and no real frame info can be extracted.

One solution is to compile schedule() with -fno-omit-frame-pointer
and -fno-optimize-sibling-calls, but that will incur performance
degradation.

Another solution is to extract info from the real scheduler,
__schedule, and this is the approache adopted here.

This patch reads the __schedule address by either following
the 'j' call in schedule if KALLSYMS is disabled or by using
kallsyms_lookup_name to lookup __schedule if KALLSYMS is
available, then, extracts schedule_mfi from __schedule frame info.

This patch also fixes the "Can't analyze schedule() prologue"
warning at boot time.

Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5237/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:59:35 +02:00
Tony Wu
e7438c4b89 MIPS: Fix sibling call handling in get_frame_info
Given a function, get_frame_info() analyzes its instructions
to figure out frame size and return address. get_frame_info()
works as follows:

1. analyze up to 128 instructions if the function size is unknown
2. search for 'addiu/daddiu sp,sp,-immed' for frame size
3. search for 'sw ra,offset(sp)' for return address
4. end search when it sees jr/jal/jalr

This leads to an issue when the given function is a sibling
call, example shown as follows.

801ca110 <schedule>:
801ca110:       8f820000        lw      v0,0(gp)
801ca114:       8c420000        lw      v0,0(v0)
801ca118:       080726f0        j       801c9bc0 <__schedule>
801ca11c:       00000000        nop

801ca120 <io_schedule>:
801ca120:       27bdffe8        addiu   sp,sp,-24
801ca124:       3c028022        lui     v0,0x8022
801ca128:       afbf0014        sw      ra,20(sp)

In this case, get_frame_info() cannot properly detect schedule's
frame info, and eventually returns io_schedule's instead.

This patch adds 'j' to the end search condition to workaround
sibling call cases.

Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5236/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:59:28 +02:00
Denis Efremov
d552b233f6 MIPS: MSP71xx: remove inline marking of EXPORT_SYMBOL functions
EXPORT_SYMBOL and inline directives are contradictory to each other.
The patch fixes this inconsistency.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: trivial@kernel.org
Cc: ldv-project@linuxtesting.org
Patchwork: https://patchwork.linux-mips.org/patch/5227/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:36:32 +02:00
David Daney
49c426ba44 MIPS: Make virt_to_phys() work for all unmapped addresses.
As reported:
  This problem was discovered when doing BGP traffic with the TCP MD5 option
  activated, where the following call chain caused a crash:

   * tcp_v4_rcv
   *  tcp_v4_timewait_ack
   *   tcp_v4_send_ack -> follow stack variable rep.th
   *    tcp_v4_md5_hash_hdr
   *     tcp_md5_hash_header
   *      sg_init_one
   *       sg_set_buf
   *        virt_to_page

  I noticed that tcp_v4_send_reset uses a similar stack variable and
  also calls tcp_v4_md5_hash_hdr, so it has the same problem.

The networking core can indirectly call virt_to_phys() on stack
addresses, if this is done from PID 0, the stack will usually be in
CKSEG0, so virt_to_phys() needs to work there as well

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Jiang Liu <liuj97@gmail.com>
Cc: eunb.song@samsung.com
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5220/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:36:15 +02:00
EunBong Song
e84ff42500 MIPS: Fix build error for crash_dump.c in 3.10-rc1
This patch fixes crash_dump.c build error. Build error logs are as follow.

arch/mips/kernel/crash_dump.c: In function 'kdump_buf_page_init':
arch/mips/kernel/crash_dump.c:67: error: implicit declaration of function 'kmalloc'
arch/mips/kernel/crash_dump.c:67: error: assignment makes pointer from integer without a cast

Signed-off-by: EunBong Song <eunb.song@samsung.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5238/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:36:02 +02:00
Libo Chen
bda97ed39b MIPS: Xway: Fix clk leak
When gptu_r32 fails, we should put clk before returning.

Signed-off-by: Libo Chen <libo.chen@huawei.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: grant.likely@linaro.org
Cc: rob.herring@calxeda.com,
Cc: linux-mips@linux-mips.org
Cc: LKML linux-kernel@vger.kernel.org
Cc: Andrew Morton akpm@linux-foundation.org
Cc: Li Zefan lizefan@huawei.com
Patchwork: https://patchwork.linux-mips.org/patch/5247/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-17 20:35:53 +02:00
Will Deacon
3126976be6 arm64: debug: fix mdscr.ss check when enabling debug exceptions
When we take an exception at EL1, we only want to enable debug
exceptions if we're not currently stepping, otherwise we can easily get
stuck in a loop stepping into interrupt handlers.

Unfortunately, the current code tests the wrong bit in the mdscr, so fix
that.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-05-17 18:24:19 +01:00
Christian Borntraeger
6b8224e40a s390/pgtable: fix ipte notify bit
Dont use the same bit as user referenced.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2013-05-17 11:47:05 +02:00
Martin Schwidefsky
a4eeea4e53 s390/smp: fix cpu re-scan vs. cpu state
The cpu-info array starts with a list of cpus in configured state,
followed by the cpus in standby state. The comparison to decide which
state a cpu has is incorrect, this causes configured cpus appear as
standby cpus. The correct comparison is the index of the new cpu in
the cpu-info array vs. the number of configured cpus.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-05-17 11:47:01 +02:00
David Daney
48c4ac976a Revert "MIPS: Allow ASID size to be determined at boot time."
This reverts commit d532f3d267.

The original commit has several problems:

1) Doesn't work with 64-bit kernels.

2) Calls TLBMISS_HANDLER_SETUP() before the code is generated.

3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when
   only one call is needed.

[ralf@linux-mips.org: Also revert the bits of the ASID patch which were
hidden in the KVM merge.]

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5242/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-16 20:35:42 +02:00
David Daney
8ea6cd7af1 Revert "MIPS: microMIPS: Support dynamic ASID sizing."
This reverts commit f6b06d9361.

The next revert depends on this one, so this has to go too.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5241/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-16 20:34:55 +02:00
Linus Torvalds
ae3b29e67c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:

 - Fix for a CPU hot-add deadlock in microcode update code

 - Fix for idle consolidation fallout

 - Documentation update for initial kernel direct mapping

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Add missing comments for initial kernel direct mapping
  x86/microcode: Add local mutex to fix physical CPU hot-add deadlock
  x86: Fix idle consolidation fallout
2013-05-15 14:07:53 -07:00
Linus Torvalds
cc51bf6e6d Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:

 - Cure for not using zalloc in the first place, which leads to random
   crashes with CPUMASK_OFF_STACK.

 - Revert a user space visible change which broke udev

 - Add a missing cpu_online early return introduced by the new full
   dyntick conversions

 - Plug a long standing race in the timer wheel cpu hotplug code.
   Sigh...

 - Cleanup NOHZ per cpu data on cpu down to prevent stale data on cpu
   up.

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time: Revert ALWAYS_USE_PERSISTENT_CLOCK compile time optimizaitons
  timer: Don't reinitialize the cpu base lock during CPU_UP_PREPARE
  tick: Don't invoke tick_nohz_stop_sched_tick() if the cpu is offline
  tick: Cleanup NOHZ per cpu data on cpu down
  tick: Use zalloc_cpumask_var for allocating offstack cpumasks
2013-05-15 14:05:17 -07:00
Linus Torvalds
37cae5e249 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fixes from Thomas Gleixner:

 - Two fixlets for the fallout of the generic idle task conversion

 - Documentation update

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu/idle: Wrap cpu-idle poll mode within rcu_idle_enter/exit
  idle: Fix hlt/nohlt command-line handling in new generic idle
  kthread: Document ways of reducing OS jitter due to per-CPU kthreads
2013-05-15 14:04:00 -07:00
Linus Torvalds
d21572c515 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "A small number of fixes for stuff from the last merge window, and in
  one case (IRQ time accounting) the previous merge window."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7720/1: ARM v6/v7 cmpxchg64 shouldn't clear upper 32 bits of the old/new value
  ARM: 7715/1: MCPM: adapt to GIC changes after upstream merge
  ARM: 7714/1: mmc: mmci: Ensure return value of regulator_enable() is checked
  ARM: 7712/1: Remove trailing whitespace in arch/arm/Makefile
  ARM: 7711/1: dove: fix Dove cpu type from V7 to PJ4
  ARM: finally enable IRQ time accounting config
2013-05-15 13:37:54 -07:00
Alan Stern
98f541c6e3 USB: remove remaining instances of USB_SUSPEND
Commit 84ebc10294 (USB: remove
CONFIG_USB_SUSPEND option) failed to remove all of the usages of
USB_SUSPEND throughout the kernel.  This patch (as1677) removes the
remaining instances of that symbol.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-15 13:44:44 -04:00
Heiko Carstens
aca9120977 s390/ftrace: fix mcount adjustment
Tony Jones reported that the ftrace self tests on s390 do not work:

<6>Testing dynamic ftrace ops #1: (0 0 0 0 0) FAILED!
<6>Testing tracer irqsoff:
<3>failed to start irqsoff tracer
<4>.. no entries found ..FAILED!
<6>Testing tracer wakeup:
<3>failed to start wakeup tracer
<4>.. no entries found ..FAILED!
<6>Testing tracer function_graph:
<4>Failed to init function_graph tracer, init returned -19
<4>FAILED!

This happens because we forgot to adjust the instruction pointer that gets
passed to the ftrace trace function by MCOUNT_INSN_SIZE.

In addition change MCOUNT_INSN_SIZE to the correct value on 31 bit.
It only worked so far because the to be patched instruction was identical.

Reported-by: Tony Jones <tonyj@suse.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-05-15 13:09:09 +02:00