Commit Graph

323165 Commits

Author SHA1 Message Date
Anton Vorontsov
5a14fead07 kernel/debug: Mask KGDB NMI upon entry
The new arch callback should manage NMIs that usually cause KGDB to
enter. That is, not all NMIs should be enabled/disabled, but only
those that issue kgdb_handle_exception().

We must mask it as serial-line interrupt can be used as an NMI, so
if the original KGDB-entry cause was say a breakpoint, then every
input to KDB console will cause KGDB to reenter, which we don't want.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:42:25 -07:00
Linus Walleij
c5dd553b9f serial: pl011: handle corruption at high clock speeds
This works around a few glitches in the ST version of the PL011
serial driver when using very high baud rates, as we do in the
Ux500: 3, 3.25, 4 and 4.05 Mbps.

Problem Observed/rootcause:

When using high baud-rates, and the baudrate*8 is getting close to
the provided clock frequency (so a division factor close to 1), when
using bursts of characters (so they are abutted), then it seems as if
there is not enough time to detect the beginning of the start-bit which
is a timing reference for the entire character, and thus the sampling
moment of character bits is moving towards the end of each bit, instead
of the middle.

Fix:
Increase slightly the RX baud rate of the UART above the theoretical
baudrate by 5%. This will definitely give more margin time to the
UART_RX to correctly sample the data at the middle of the bit period.

Also fix the ages old copy-paste error in the very stressed comment,
it's referencing the registers used in the PL010 driver rather than
the PL011 ones.

Signed-off-by: Guillaume Jaunet <guillaume.jaunet@stericsson.com>
Signed-off-by: Christophe Arnal <christophe.arnal@stericsson.com>
Signed-off-by: Matthias Locher <matthias.locher@stericsson.com>
Signed-off-by: Rajanikanth HV <rajanikanth.hv@stericsson.com>
Cc: stable <stable@vger.kernel.org>
Cc: Bibek Basu <bibek.basu@stericsson.com>
Cc: Par-Gunnar Hjalmdahl <par-gunnar.hjalmdahl@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:41:05 -07:00
Alexander Shiyan
91f61ce24f serial: sccnxp: Make 'default' choice in switch last
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:41:05 -07:00
Alexander Shiyan
3195fd23f8 serial: sccnxp: Remove mask termios caps for SW flow control
The kernel will handle IXON/IXOFF/IXANY in software if the hardware
doesn't do it.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:41:05 -07:00
Alexander Shiyan
1685118f55 serial: sccnxp: Report actual baudrate back to core
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:41:05 -07:00
Julien Pichon
93b5c032d9 serial: samsung: Add poll_get_char & poll_put_char
The following patch allows users to use KGDB over serial console on
board based on Samsung SOC. It has been tested on a board using
exynos5.

[dianders: changed poll to return NO_POLL_CHAR, which appears to
fix 'help' in kgdb; also updated commit message]

Signed-off-by: Julien Pichon <pichon.jln@gmail.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:40:12 -07:00
Christophe Leroy
6e62bdc07e Powerpc 8xx CPM_UART setting MAXIDL register proportionaly to baud rate
MAXIDL is the timeout after which a receive buffer is closed when not full if
no more characters are received. We calculate it from the baudrate so that the
duration is always the same at standard rates: about 4ms. At 9600 bauds it gives
a timeout of 4 characters, which is the timeout on the 8250 UART.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:39:39 -07:00
Christophe Leroy
fbbb9d9646 Powerpc 8xx CPM_UART maxidl should not depend on fifo size
maxidl register was set to fifo size. There is no reason to set this
register to same value as fifo size. Setting it now to 0x10 by default
as in the UCC UART driver.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:39:39 -07:00
Christophe Leroy
59733ef7e5 Powerpc 8xx CPM_UART too many interrupts
Setting the fifo to only 1 byte generates one interrupt every 1ms at 9600 bauds.
This is too much. This patch reduces the threshold to speeds below 2400 bauds
like in the 8250 UART driver.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:39:39 -07:00
Christophe Leroy
725ef4a3b6 Powerpc 8xx CPM_UART desynchronisation
This patch fixes a desynchronisation problem with CPM UART driver on
Powerpc MPC8xx. The problem happens if data is received before the device
is open by the user application.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:39:39 -07:00
Flavio Leitner
26e8220adb serial: set correct baud_base for EXSYS EX-41092 Dual 16950
Apparently the same card model has two IDs, so this patch
complements the commit 39aced68d6
adding the missing one.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:35:12 -07:00
Shubhrajyoti D
9a12fcf8b1 serial: omap: fix the reciever line error case
This patch does the following
- In case of errors if there least one data character in the RX FIFO
read it otherwise it may stall the receiver.

This is recommended in the interrupt reset method in the table 23-246 of
the omap4 TRM.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:33:37 -07:00
Sean Young
65ecc9c02d 8250: blacklist Winbond CIR port
The legacy serial driver will detect the Winbond CIR device as a serial
port, since it looks exactly like a serial port unless you know what
it is from the PNP ID.

Here we track this port as a special PORT_8250_CIR type, preventing the
legacy serial driver from probing it.

Signed-off-by: Sean Young <sean@mess.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:25:41 -07:00
Sean Young
835d844d1a 8250_pnp: do pnp probe before legacy probe
We first probe the legacy serial ports and then check pnp. If there
is a non-standard configuration then this might not work, also this
change is needed so we can blacklist Winbond CIR based on PNP ID.

For this to work the 8250_pnp driver must be merged into the 8250
module.

Signed-off-by: Sean Young <sean@mess.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-26 13:25:41 -07:00
Stephen Rothwell
4dac211654 staging: dgrp: using vmalloc needs to include vmalloc.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-25 15:44:56 -07:00
Bill Pemberton
ad0c6e367e staging: dgrp: fix potential call to strncpy with a negative number
In dgrp_receive() there is:

   desclen = ((plen - 12) > MAX_DESC_LEN) ? MAX_DESC_LEN :
   	     	      	    plen - 12;
   strncpy(nd->nd_ps_desc, b + 12, desclen);

However, it's possible for plen to be <= 12 here so we'd be passing a
negative number into the strncpy().  Fix this to not make the strncpy
call and report an error if desclen is <= 0

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-25 15:42:38 -07:00
Jaeden Amero
142e5460a6 compat_ioctl: Avoid using undefined RS-485 IOCTLs
Wrap the use of TIOCSRS485 and TIOCGRS485 in #ifdef so that we avoid
adding undefined IOCTLs to the ioctl pointer list as compatible
ioctls.

This change was motivated by a build error on a MIPS build.

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
tty-next
head:   ac57e7f38e
commit: 84c3b84860 [10/16] compat_ioctl:
  Add RS-485 IOCTLs to the list
config: mips-fuloong2e_defconfig

All related error/warning messages:

fs/compat_ioctl.c:869:1: error: 'TIOCSRS485' undeclared here (not in a
  function)
fs/compat_ioctl.c:870:1: error: 'TIOCGRS485' undeclared here (not in a
  function)

vim +869 fs/compat_ioctl.c
863 COMPATIBLE_IOCTL(TIOCSPGRP)
864 COMPATIBLE_IOCTL(TIOCGPGRP)
865 COMPATIBLE_IOCTL(TIOCGPTN)
866 COMPATIBLE_IOCTL(TIOCSPTLCK)
867 COMPATIBLE_IOCTL(TIOCSERGETLSR)
868 COMPATIBLE_IOCTL(TIOCSIG)
> 869 COMPATIBLE_IOCTL(TIOCSRS485)
870 COMPATIBLE_IOCTL(TIOCGRS485)
871 #ifdef TCGETS2
872 COMPATIBLE_IOCTL(TCGETS2)

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jaeden Amero <jaeden.amero@ni.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-25 15:40:56 -07:00
Sourav Poddar
ac57e7f38e serial: omap: Remove unnecessary checks from suspend/resume
Drop the check for "up" being valid on suspend/resume callbacks.
It should be valid always. Get rid of the "pdata" check also as
serial_omap_get_context_loss_count() checks for it.

Tested on omap4 panda and 3630 based Beagle board.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:57:41 -07:00
Richard Zhao
034dc4db6f serial: imx: remove null check of sport in suspend/resume function
platform_get_drvdata always retrun a valid value after probe succeed.

It also fixed smatch warnings:
drivers/tty/serial/imx.c:1376 serial_imx_suspend() warn: variable dereferenced before check 'sport' (see line 1372)
drivers/tty/serial/imx.c:1392 serial_imx_resume() warn: variable dereferenced before check 'sport' (see line 1388)

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:53:16 -07:00
Richard Zhao
0a86a86b92 serial: imx: set sport as drvdata, like it's used elsewhere
Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:53:15 -07:00
Flavio Leitner
bd21f551c3 8250: fix autoconfig to work with serial console
The autoconfig prints messages while holding the
port's spinlock and that causes a deadlock when
using serial console.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:53:15 -07:00
Alan Cox
05fb79e45e pty: Fix locking bug on error path
We end up dropping the mutex twice on some errors. We don't want to do
that.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:51:09 -07:00
Alan Cox
43eca0aef7 serial_core: Fix race in uart_handle_dcd_change
If a serial driver is called post hangup with a second DCD event then we
will attempt to get the ldisc of NULL. Check we have a tty before trying to
do anything with it.

This is still only safe within the uart layer if the caller holds the
relevant uart locks. We could do with a version where the tty is passed for
more general use.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:51:09 -07:00
Jaeden Amero
84c3b84860 compat_ioctl: Add RS-485 IOCTLs to the list
The RS-485 TIOCSRS485 and TIOCGRS485 ioctls are 32-bit compatible, so
in order to call them on 64-bit systems from 32-bit user mode, we add
them to the ioctl pointer list as compatible ioctls.

Signed-off-by: Jaeden Amero <jaeden.amero@ni.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:51:09 -07:00
Bill Pemberton
7b6d45c211 staging: dgrp: add dgrp to the build
Kconfig and Makefile changes to add dgrp to the build system.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:04:18 -07:00
Bill Pemberton
0b52b74972 staging: Add dgrp driver for Digi Realport devices
This is based on dgrp-1.9 available from
ftp://ftp1.digi.com/support/beta/linux/dgrp/dgrp-1.9.tgz

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-21 09:04:18 -07:00
Greg Kroah-Hartman
5de69349ed tty/serial: put (EXPERIMENTAL) marking back on N_GSM and SERIAL_IFX6X60
Alan says these are not production ready, and users should be told this,
so put the "(EXPERIMENTAL)" marking back in the Kconfig entry string.

Reported-by: Alan Cox <alan@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 17:17:56 +01:00
Greg Kroah-Hartman
8b77562b4f tty/serial: remove CONFIG_EXPERIMENTAL dependencies
As discussed at the kernel summit this year, CONFIG_EXPERIMENTAL means
nothing, so let's get rid of it.

Cc: Kees Cook <keescook@chromium.org>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 16:19:27 +01:00
Sachin Kamat
e740d8f1a0 tty: serial: Samsung: Fix return value
Return the value returned by the failing function instead
of -1 (which does not convey the right error information).

Fixes the following smatch warning:
drivers/tty/serial/samsung.c:1687 s3c24xx_serial_modinit() info:
why not propagate 'ret' from uart_register_driver() instead of -1?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-17 04:45:30 -07:00
Alan Cox
47fdd641cc tty: n_gsm: Fix incorrect debug display
In the trace we print the wrong values for N(R) on an I frame.
Correct the mask.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-17 04:45:30 -07:00
Alan Cox
b6abc90480 tty: ipwireless: check ppp register worked
Otherwise we start trying to use a bogus channel - ungood.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-17 04:45:30 -07:00
Alan Cox
41fda9c4d9 tty: serial: max3100: Fix error case
We don't want to free a random address if the entry is wrong, cover
this and WARN if it ever happens.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-17 04:45:29 -07:00
Alan Cox
d83114e975 tty: Fix hvc return
HVC returns a size of -1 bytes for the write room in some cases.
This is bogus and not handled by the tty layer at all.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-17 04:45:29 -07:00
Greg Kroah-Hartman
7ac3c93e5d Merge 3.6-rc6 into tty-next
This pulls in the fixes in 3.6-rc6

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-16 17:31:36 -07:00
Linus Torvalds
5698bd757d Linux 3.6-rc6 2012-09-16 14:58:51 -07:00
Linus Torvalds
73f8be297e This is the remaining MFD fixes for 3.6, with 5 pending fixes:
- A tps65217 build error fix.
 - A lcp_ich regression fix caused by the MFD driver failing to initialize the
   watchdog sub device due to ACPI conflicts.
 - 2 MAX77693 interrupt handling bug fixes.
 - An MFD core fix, adding an IRQ domain argument to the MFD device addition
   API in order to prevent silent and potentially harmful remapping behaviour
   changes for drivers supporting non-DT platforms.
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Merge tag 'mfd-for-linus-3.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull mfd fixes from Samuel Ortiz:
 "This is the remaining MFD fixes for 3.6, with 5 pending fixes:

   - A tps65217 build error fix.
   - A lcp_ich regression fix caused by the MFD driver failing to
     initialize the watchdog sub device due to ACPI conflicts.
   - 2 MAX77693 interrupt handling bug fixes.
   - An MFD core fix, adding an IRQ domain argument to the MFD device
     addition API in order to prevent silent and potentially harmful
     remapping behaviour changes for drivers supporting non-DT
     platforms."

* tag 'mfd-for-linus-3.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: MAX77693: Fix NULL pointer error when initializing irqs
  mfd: MAX77693: Fix interrupt handling bug
  mfd: core: Push irqdomain mapping out into devices
  mfd: lpc_ich: Fix a 3.5 kernel regression for iTCO_wdt driver
  mfd: Move tps65217 regulator plat data handling to regulator
2012-09-16 13:22:21 -07:00
Linus Torvalds
c500ce38e5 While this comes a bit later than I had wished, both patches are rather
minor and touch only new drivers so I think these are still safe for
 merging.
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Merge tag 'for-3.6-rc6' of git://gitorious.org/linux-pwm/linux-pwm

Pull pwm fixes from Thierry Reding:
 "While this comes a bit later than I had wished, both patches are
  rather minor and touch only new drivers so I think these are still
  safe for merging."

* tag 'for-3.6-rc6' of git://gitorious.org/linux-pwm/linux-pwm:
  pwm: pwm-tiehrpwm: Fix conflicting channel period setting
  pwm: pwm-tiecap: Disable APWM mode after configure
2012-09-16 13:20:43 -07:00
Linus Torvalds
76e77daf65 Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull scsi target fixes from Nicholas Bellinger:
 "Here is the current set of target-pending fixes headed for v3.6-final

  The main parts of this series include bug-fixes from Paolo Bonzini to
  address an use-after-free bug in pSCSI sense exception handling, along
  with addressing some long-standing bugs wrt the handling of zero-
  length SCSI CDB payloads also specific to pSCSI pass-through device
  backends."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: go through normal processing for zero-length REQUEST_SENSE
  target: support zero allocation length in REQUEST SENSE
  target: support zero-size allocation lengths in transport_kmap_data_sg
  target: fail REPORT LUNS with less than 16 bytes of payload
  target: report too-small parameter lists everywhere
  target: go through normal processing for zero-length PSCSI commands
  target: fix use-after-free with PSCSI sense data
  target: simplify code around transport_get_sense_data
  target: move transport_get_sense_data
  target: Check idr_get_new return value in iscsi_login_zero_tsih_s1
  target: Fix ->data_length re-assignment bug with SCSI overflow
2012-09-16 13:00:36 -07:00
Linus Torvalds
9bc67590a6 Power management fixes for 3.6-rc6
* Three ACPI device power management fixes related to checking and
   setting device power states.
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Merge tag 'pm-for-3.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael J. Wysocki:
 "Three ACPI device power management fixes related to checking and
  setting device power states."

* tag 'pm-for-3.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PM: Use KERN_DEBUG when no power resources are found
  ACPI / PM: Fix resource_lock dead lock in acpi_power_on_device
  ACPI / PM: Infer parent power state from child if unknown, v2
2012-09-16 12:59:42 -07:00
Linus Torvalds
6167f81fd1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull a btrfs revert from Chris Mason:
 "My for-linus branch has one revert in the new quota code.

  We're building up more fixes at etc for the next merge window, but I'm
  keeping them out unless they are bigger regressions or have a huge
  impact."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Revert "Btrfs: fix some error codes in btrfs_qgroup_inherit()"
2012-09-16 12:58:44 -07:00
Linus Torvalds
a34689d980 Sound fixes #2 for 3.6-rc6
Yet more (a bunch of) small fixes that slipped from the previous
 pull request.  Most of commits are pending ASoC fixes, all of which
 are fairly trivial commits.
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Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull more sound fixes from Takashi Iwai:
 "Yet more (a bunch of) small fixes that slipped from the previous pull
  request.  Most of commits are pending ASoC fixes, all of which are
  fairly trivial commits."

* tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: wm8904: correct the index
  ALSA: hda - Yet another position_fix quirk for ASUS machines
  ASoC: tegra: fix maxburst settings in dmaengine code
  ASoC: samsung dma - Don't indicate support for pause/resume.
  ASoC: mc13783: Remove mono support
  ASoC: arizona: Fix typo in 44.1kHz rates
  ASoC: spear: correct the check for NULL dma_buffer pointer
  sound: tegra_alc5632: remove HP detect GPIO inversion
  ASoC: atmel-ssc: include linux/io.h for raw io
  ASoC: dapm: Don't force card bias level to be updated
  ASoC: dapm: Make sure we update the bias level for CODECs with no op
  ASoC: am3517evm: fix error return code
  ASoC: ux500_msp_i2s: better use devm functions and fix error return code
  ASoC: imx-sgtl5000: fix error return code
2012-09-16 12:57:59 -07:00
Linus Torvalds
37407ea7f9 Revert "sched: Improve scalability via 'CPU buddies', which withstand random perturbations"
This reverts commit 970e178985.

Nikolay Ulyanitsky reported thatthe 3.6-rc5 kernel has a 15-20%
performance drop on PostgreSQL 9.2 on his machine (running "pgbench").

Borislav Petkov was able to reproduce this, and bisected it to this
commit 970e178985 ("sched: Improve scalability via 'CPU buddies' ...")
apparently because the new single-idle-buddy model simply doesn't find
idle CPU's to reschedule on aggressively enough.

Mike Galbraith suspects that it is likely due to the user-mode spinlocks
in PostgreSQL not reacting well to preemption, but we don't really know
the details - I'll just revert the commit for now.

There are hopefully other approaches to improve scheduler scalability
without it causing these kinds of downsides.

Reported-by: Nikolay Ulyanitsky <lystor@gmail.com>
Bisected-by: Borislav Petkov <bp@alien8.de>
Acked-by: Mike Galbraith <efault@gmx.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-16 12:29:43 -07:00
Chanwoo Choi
b186b12487 mfd: MAX77693: Fix NULL pointer error when initializing irqs
This patch initialize register map of MUIC device because mfd driver
of Maxim MAX77693 use regmap-muic instance of MUIC device when irqs of
Maxim MAX77693 is initialized before call max77693-muic probe() function.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-16 00:33:09 +02:00
Chanwoo Choi
d51f42d2c5 mfd: MAX77693: Fix interrupt handling bug
This patch fix bug related to interrupt handling for MAX77693 devices.
- Unmask interrupt masking bit for charger/flash/muic to revolve
that interrupt isn't happened when external connector is attached.
- Fix wrong regmap instance when muic interrupt is happened.

This patch were discussed and confirm discussion about this patch on below url:
http://lkml.org/lkml/2012/7/16/118

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-16 00:32:57 +02:00
Mark Brown
0848c94fb4 mfd: core: Push irqdomain mapping out into devices
Currently the MFD core supports remapping MFD cell interrupts using an
irqdomain but only if the MFD is being instantiated using device tree
and only if the device tree bindings use the pattern of registering IPs
in the device tree with compatible properties.  This will be actively
harmful for drivers which support non-DT platforms and use this pattern
for their DT bindings as it will mean that the core will silently change
remapping behaviour and it is also limiting for drivers which don't do
DT with this particular pattern.  There is also a potential fragility if
there are interrupts not associated with MFD cells and all the cells are
omitted from the device tree for some reason.

Instead change the code to take an IRQ domain as an optional argument,
allowing drivers to take the decision about the parent domain for their
interrupts.  The one current user of this feature is ab8500-core, it has
the domain lookup pushed out into the driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-15 23:22:04 +02:00
Takashi Iwai
5d037f9064 ASoC: Updates for 3.6
A bigger set of updates than I'm entirely comfortable with - things
 backed up a bit due to travel.  As ever the majority of these are small,
 focused updates for specific drivers though there are a couple of core
 changes.  There's been good exposure in -next.
 
 The AT91 patch fixes a build break.
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Merge tag 'asoc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for 3.6

A bigger set of updates than I'm entirely comfortable with - things
backed up a bit due to travel.  As ever the majority of these are small,
focused updates for specific drivers though there are a couple of core
changes.  There's been good exposure in -next.

The AT91 patch fixes a build break.
2012-09-15 08:24:42 +02:00
Linus Torvalds
3f0c3c8fe3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
Pull GFS2 fixes from Steven Whitehouse:
 "Here are three GFS2 fixes for the current kernel tree.  These are all
  related to the block reservation code which was added at the merge
  window.  That code will be getting an update at the forthcoming merge
  window too.  In the mean time though there are a few smaller issues
  which should be fixed.

  The first patch resolves an issue with write sizes of greater than 32
  bits with the size hinting code.  The second ensures that the
  allocation data structure is initialised when using xattrs and the
  third takes into account allocations which may have been made by other
  nodes which affect a reservation on the local node."

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
  GFS2: Take account of blockages when using reserved blocks
  GFS2: Fix missing allocation data for set/remove xattr
  GFS2: Make write size hinting code common
2012-09-14 18:05:14 -07:00
Linus Torvalds
9cb0ee8576 Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Pull x86 platform driver updates from Matthew Garrett:
 "A few small updates for 3.6 - a trivial regression fix and a couple of
  conformance updates for the gmux driver, plus some tiny fixes for
  asus-wmi, eeepc-laptop and thinkpad_acpi."

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86:
  thinkpad_acpi: buffer overflow in fan_get_status()
  eeepc-laptop: fix device reference count leakage in eeepc_rfkill_hotplug()
  platform/x86: fix asus_laptop.wled_type description
  asus-laptop: HRWS/HWRS typo
  drivers-platform-x86: remove useless #ifdef CONFIG_ACPI_VIDEO
  apple-gmux: Fix port address calculation in gmux_pio_write32()
  apple-gmux: Fix index read functions
  apple-gmux: Obtain version info from indexed gmux
2012-09-14 17:59:35 -07:00
Linus Torvalds
5b799dde31 Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux
Pull i2c embedded fixes from Wolfram Sang:
 "The last bunch of (typical) i2c-embedded driver fixes for 3.6.

  Also update the MAINTAINERS file to point to my tree since people keep
  asking where to find their patches."

* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
  i2c: algo: pca: Fix mode selection for PCA9665
  MAINTAINERS: fix tree for current i2c-embedded development
  i2c: mxs: correctly setup speed for non devicetree
  i2c: pnx: Fix read transactions of >= 2 bytes
  i2c: pnx: Fix bit definitions
2012-09-14 17:55:57 -07:00
Linus Torvalds
1547cb80db - Fixes a regression, introduced in 3.6-rc1, when a file is closed before its
shared memory mapping is dirtied and unmapped. The lower file was being
   released when the eCryptfs file was closed and the dirtied pages could not be
   written out.
 - Adds a call to the lower filesystem's ->flush() from ecryptfs_flush().
 - Fixes a regression, introduced in 2.6.39, when a file is renamed on top of
   another file. The target file's inode was not being evicted and the space
   taken by the file was not reclaimed until eCryptfs was unmounted.
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Merge tag 'ecryptfs-3.6-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull ecryptfs fixes from Tyler Hicks:

 - Fixes a regression, introduced in 3.6-rc1, when a file is closed
   before its shared memory mapping is dirtied and unmapped.  The lower
   file was being released when the eCryptfs file was closed and the
   dirtied pages could not be written out.
 - Adds a call to the lower filesystem's ->flush() from
   ecryptfs_flush().
 - Fixes a regression, introduced in 2.6.39, when a file is renamed on
   top of another file.  The target file's inode was not being evicted
   and the space taken by the file was not reclaimed until eCryptfs was
   unmounted.

* tag 'ecryptfs-3.6-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Copy up attributes of the lower target inode after rename
  eCryptfs: Call lower ->flush() from ecryptfs_flush()
  eCryptfs: Write out all dirty pages just before releasing the lower file
2012-09-14 17:53:55 -07:00