platform/adaptation/renesas_rcar/renesas_kernel.git
11 years agotty: mxser: improve error handling in mxser_probe() and mxser_module_init()
Alexey Khoroshilov [Sat, 16 Feb 2013 22:24:37 +0000 (02:24 +0400)]
tty: mxser: improve error handling in mxser_probe() and mxser_module_init()

1. Currently mxser_probe() and mxser_module_init() ignore errors
that can happen in tty_port_register_device().
2. mxser_module_init() does not deallocate resources allocated in mxser_get_ISA_conf()
if mxser_initbrd() failed.

The patch adds proper error handling in all the cases.
Also it moves free_irq() from mxser_release_ISA_res() to mxser_board_remove(),
since it makes mxser_release_ISA_res() a counterpart for mxser_get_ISA_conf(),
while free_irq() is relevant to both ISA and PCI boards.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: imx: fix uninitialized variable warning
Shawn Guo [Mon, 18 Feb 2013 05:15:36 +0000 (13:15 +0800)]
serial: imx: fix uninitialized variable warning

Commit 677fe55 (serial: imx: Fix recursive locking bug) introduces an
uninitialized variable warning as below.

  CC      drivers/tty/serial/imx.o
drivers/tty/serial/imx.c: In function ‘imx_console_write’:
include/linux/spinlock.h:340:2: warning: ‘flags’ may be used uninitialized in this function [-Wuninitialized]
drivers/tty/serial/imx.c:1214:16: note: ‘flags’ was declared here

Initialize the variable to suppress the warning.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: tegra: assume CONFIG_OF
Stephen Warren [Fri, 15 Feb 2013 22:04:45 +0000 (15:04 -0700)]
serial: tegra: assume CONFIG_OF

Tegra only supports, and always enables, device tree. Remove all ifdefs
for DT support from the driver.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoTTY: do not update atime/mtime on read/write
Jiri Slaby [Fri, 15 Feb 2013 14:25:05 +0000 (15:25 +0100)]
TTY: do not update atime/mtime on read/write

On http://vladz.devzero.fr/013_ptmx-timing.php, we can see how to find
out length of a password using timestamps of /dev/ptmx. It is
documented in "Timing Analysis of Keystrokes and Timing Attacks on
SSH". To avoid that problem, do not update time when reading
from/writing to a TTY.

I am afraid of regressions as this is a behavior we have since 0.97
and apps may expect the time to be current, e.g. for monitoring
whether there was a change on the TTY. Now, there is no change. So
this would better have a lot of testing before it goes upstream.

References: CVE-2013-0160

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org> # after 3.9 is out
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agolguest: select CONFIG_TTY to build properly.
Randy Dunlap [Thu, 14 Feb 2013 18:55:06 +0000 (10:55 -0800)]
lguest: select CONFIG_TTY to build properly.

Fix kconfig warning for LGUEST_GUEST config by selecting TTY:

warning: (KVMTOOL_TEST_ENABLE && LGUEST_GUEST) selects VIRTIO_CONSOLE which has unmet direct dependencies (VIRTIO && TTY)

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Joe Millenbach <jmillenbach@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoARM defconfigs: add missing inclusions of linux/platform_device.h
Arnd Bergmann [Thu, 14 Feb 2013 22:26:56 +0000 (23:26 +0100)]
ARM defconfigs: add missing inclusions of linux/platform_device.h

Patch 16559ae "kgdb: remove #include <linux/serial_8250.h> from kgdb.h"
removed an implicit inclusion of linux/platform_device.h
In a number of places. This adds back explicit inclusions in a few
more places I found.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agofb/exynos: include platform_device.h
Arnd Bergmann [Thu, 14 Feb 2013 22:26:51 +0000 (23:26 +0100)]
fb/exynos: include platform_device.h

Patch 16559ae "kgdb: remove #include <linux/serial_8250.h> from kgdb.h"
removed an implicit inclusion of linux/platform_device.h
from the exynos framebuffer driver. This adds back the required
explicit header file inclusions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ajay Kumar <ajaykumar.rs@samsung.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoARM: sa1100/assabet: include platform_device.h directly
Arnd Bergmann [Thu, 14 Feb 2013 22:26:50 +0000 (23:26 +0100)]
ARM: sa1100/assabet: include platform_device.h directly

Patch "16559ae kgdb: remove #include <linux/serial_8250.h> from kgdb.h
caused assabet_defconfig to fail, since assabet.c did not
itself include linux/platform_device.h, although it needs it:

In file included from include/linux/mfd/ucb1x00.h:13:0,
                 from arch/arm/mach-sa1100/assabet.c:19:
include/linux/mfd/mcp.h:22:16: error: field 'attached_device' has incomplete type
include/linux/mfd/mcp.h:48:23: error: field 'drv' has incomplete type
In file included from arch/arm/mach-sa1100/assabet.c:19:0:
include/linux/mfd/ucb1x00.h:137:16: error: field 'dev' has incomplete type
arch/arm/mach-sa1100/assabet.c: In function 'assabet_init':
arch/arm/mach-sa1100/assabet.c:343:3: error: implicit declaration of function 'platform_device_register_simple' [-Wimplicit-function-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: imx: Fix recursive locking bug
Thomas Gleixner [Thu, 14 Feb 2013 20:01:06 +0000 (21:01 +0100)]
serial: imx: Fix recursive locking bug

commit 9ec1882df2 (tty: serial: imx: console write routing is unsafe
on SMP) introduced a recursive locking bug in imx_console_write().

The callchain is:

imx_rxint()
  spin_lock_irqsave(&sport->port.lock,flags);
  ...
  uart_handle_sysrq_char();
    sysrq_function();
      printk();
        imx_console_write();
          spin_lock_irqsave(&sport->port.lock,flags); <--- DEAD

The bad news is that the kernel debugging facilities can dectect the
problem, but the printks never surface on the serial console for
obvious reasons.

There is a similar issue with oops_in_progress. If the kernel crashes
we really don't want to be stuck on the lock and unable to tell what
happened.

In general most UP originated drivers miss these checks and nobody
ever notices because CONFIG_PROVE_LOCKING seems to be still ignored by
a large number of developers.

The solution is to avoid locking in the sysrq case and trylock in the
oops_in_progress case.

This scheme is used in other drivers as well and it would be nice if
we could move this to a common place, so the usual copy/paste/modify
bugs can be avoided.

Now there is another issue with this scheme:

CPU0              CPU1
printk()
 rxint()
   sysrq_detection() -> sets port->sysrq
 return from interrupt
  console_write()
     if (port->sysrq)
      avoid locking

port->sysrq is reset with the next receive character. So as long as
the port->sysrq is not reset and this can take an endless amount of
time if after the break no futher receive character follows, all
console writes happen unlocked.

While the current writer is protected against other console writers by
the console sem, it's unprotected against open/close or other
operations which fiddle with the port. That's what the above mentioned
commit tried to solve.

That's an issue in all drivers which use that scheme and unfortunately
there is no easy workaround. The only solution is to have a separate
indicator port->sysrq_cpu. uart_handle_sysrq_char() then sets it to
smp_processor_id() before calling into handle_sysrq() and resets it to
-1 after that. Then change the locking check to:

     if (port->sysrq_cpu == smp_processor_id())
       locked = 0;
     else if (oops_in_progress)
         locked = spin_trylock_irqsave(port->lock, flags);
     else
    spin_lock_irqsave(port->lock, flags);

That would force all other cpus into the spin_lock path. Problem
solved, but that's way beyond the scope of this fix and really wants
to be implemented in a common function which calls the uart specific
write function to avoid another gazillion of hard to debug
copy/paste/modify bugs.

Reported-and-tested-by: Tim Sander <tim@krieglstein.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable <stable@vger.kernel.org> # 3.6+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Fix build breakage from decoupling pps from tty
Peter Hurley [Wed, 13 Feb 2013 19:54:30 +0000 (14:54 -0500)]
pps: Fix build breakage from decoupling pps from tty

Fixes:
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-next
head:   bc80fbe46be7430487a45ad92841932bb2eaa3e6
commit: 593fb1ae457aab28b392ac114f6e3358788da985 pps: Move timestamp read into PPS code proper
date:   78 minutes ago
config: make ARCH=sparc defconfig

All error/warnings:

   In file included from drivers/tty/serial/suncore.c:20:0:
>> include/linux/sunserialcore.h:29:15: warning: 'struct device_node' declared inside parameter list [enabled by default]
>> include/linux/sunserialcore.h:29:15: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
>> include/linux/sunserialcore.h:31:18: warning: 'struct device_node' declared inside parameter list [enabled by default]
>> drivers/tty/serial/suncore.c:55:5: error: conflicting types for 'sunserial_console_match'
   include/linux/sunserialcore.h:28:12: note: previous declaration of 'sunserial_console_match' was here
>> drivers/tty/serial/suncore.c:83:1: error: conflicting types for 'sunserial_console_match'
   include/linux/sunserialcore.h:28:12: note: previous declaration of 'sunserial_console_match' was here
>> drivers/tty/serial/suncore.c:85:6: error: conflicting types for 'sunserial_console_termios'
   include/linux/sunserialcore.h:30:13: note: previous declaration of 'sunserial_console_termios' was here

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: George Spelvin <linux@horizon.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: Remove ancient hardpps()
Peter Hurley [Wed, 6 Feb 2013 15:55:16 +0000 (10:55 -0500)]
tty: Remove ancient hardpps()

hardpps() functionality is provided through the N_PPS line
discipline now. The new function signature was added in commit
025b40ab (2011-01-12). There was no previous macro or
function hardpps(), at least since before the initial commit of
v2.6.12 in 2005. It's unlikely this code has been compiled since.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: George Spelvin <linux@horizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Additional cleanups in uart_handle_dcd_change
George Spelvin [Sun, 10 Feb 2013 09:44:30 +0000 (04:44 -0500)]
pps: Additional cleanups in uart_handle_dcd_change

An extension of the previous commit, there is no semantic change
here, just fewer lines of source code.

Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Move timestamp read into PPS code proper
George Spelvin [Tue, 12 Feb 2013 07:00:43 +0000 (02:00 -0500)]
pps: Move timestamp read into PPS code proper

The PPS (Pulse-Per-Second) line discipline has developed a number of
unhealthy attachments to core tty data and functions, ultimately leading
to its breakage.

The previous patches fixed the crashing.  This one reduces coupling further
by eliminating the timestamp parameter from the dcd_change ldisc method.
This reduces header file linkage and makes the extension more generic,
and the timestamp read is delayed only slightly, from just before the
ldisc->ops->dcd_change method call to just after.

Fix attendant build breakage in
    drivers/tty/n_tty.c
    drivers/tty/tty_buffer.c
    drivers/staging/speakup/selection.c
    drivers/staging/dgrp/dgrp_*.c

Cc: William Hubbs <w.d.hubbs@gmail.com>
Cc: Chris Brannon <chris@the-brannons.com>
Cc: Kirk Reiser <kirk@braille.uwo.ca>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Don't crash the machine when exiting will do
George Spelvin [Sun, 10 Feb 2013 09:43:41 +0000 (04:43 -0500)]
pps: Don't crash the machine when exiting will do

PPS is not really the must-have subsystem that warrants crashing
the machine if the ldisc interface is broken.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Fix a use-after free bug when unregistering a source.
George Spelvin [Tue, 12 Feb 2013 07:27:20 +0000 (02:27 -0500)]
pps: Fix a use-after free bug when unregistering a source.

Remove the cdev from the system (with cdev_del) *before* deallocating it
(in pps_device_destruct, called via kobject_put from device_destroy).

Also prevent deallocating a device with open file handles.

A better long-term fix is probably to remove the cdev from the pps_device
entirely, and instead have all devices reference one global cdev.  Then
the deallocation ordering becomes simpler.

But that's more complex and invasive change, so we leave that
for later.

Signed-off-by: George Spelvin <linux@horizon.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Use pps_lookup_dev to reduce ldisc coupling
George Spelvin [Sun, 10 Feb 2013 09:41:56 +0000 (04:41 -0500)]
pps: Use pps_lookup_dev to reduce ldisc coupling

Now that N_TTY uses tty->disc_data for its private data,
'subclass' ldiscs cannot use ->disc_data for their own private data.
(This is a regression is v3.8-rc1)

Use pps_lookup_dev to associate the tty with the pps source instead.

This fixes a crashing regression in 3.8-rc1.

Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopps: Add pps_lookup_dev() function
George Spelvin [Sun, 10 Feb 2013 09:08:32 +0000 (04:08 -0500)]
pps: Add pps_lookup_dev() function

The PPS serial line discipline wants to attach a PPS device to a tty
without changing the tty code to add a struct pps_device * pointer.

Since the number of PPS devices in a typical system is generally very low
(n=1 is by far the most common), it's practical to search the entire list
of allocated pps devices.  (We capture the timestamp before the lookup,
so the timing isn't affected.)

It is a bit ugly that this function, which is part of the in-kernel
PPS API, has to be in pps.c as opposed to kapi,c, but that's not
something that affects users.

Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: serial: uartlite: Support uartlite on big and little endian systems
Michal Simek [Mon, 11 Feb 2013 18:04:34 +0000 (19:04 +0100)]
tty: serial: uartlite: Support uartlite on big and little endian systems

Use big and little endian accessors function to reflect system configuration.
Detection is done via control register in ulite_request_port.

Tested on Microblaze LE, BE, PPC440 and Arm zynq.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: serial: uartlite: Fix sparse and checkpatch warnings
Michal Simek [Mon, 11 Feb 2013 18:04:33 +0000 (19:04 +0100)]
tty: serial: uartlite: Fix sparse and checkpatch warnings

Clean coding style and sparse warnings.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial/arc-uart: Miscll DT related updates (Grant's review comments)
Vineet Gupta [Mon, 11 Feb 2013 08:41:41 +0000 (14:11 +0530)]
serial/arc-uart: Miscll DT related updates (Grant's review comments)

-replace "baud" with "current-speed"
-if uart alias doesn't exist in DT, don't abort, pick 0

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agodrivers/serial: add GENERIC_HARDIRQS dependency
Heiko Carstens [Wed, 6 Feb 2013 16:24:03 +0000 (17:24 +0100)]
drivers/serial: add GENERIC_HARDIRQS dependency

Since SERIAL_CORE needs GENERIC_HARDIRQS (see below) and most serial drivers
select it, just add a GENERIC_HARDIRQS dependency to all serial drivers.

Fixes the compile error below:

drivers/tty/serial/serial_core.c: In function ‘uart_set_info’:
drivers/tty/serial/serial_core.c:725:2: error: implicit declaration of function ‘irq_canonicalize’

Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoRevert "serial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLL"
fabio.estevam@freescale.com [Wed, 6 Feb 2013 21:00:02 +0000 (19:00 -0200)]
Revert "serial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLL"

This reverts commit cdc8da3998dcc50cee2f81904c16ebdbd7ec2cee.

In my attempt to fix a build warning on arm randconfig a build error on
imx_v6_v7_defconfig was introduced, so revert it for now.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoinput: drop unnecessary dependencies on TTY
Joe Millenbach [Wed, 6 Feb 2013 01:58:34 +0000 (17:58 -0800)]
input: drop unnecessary dependencies on TTY

Backing out changes made in earlier TTY removal patch.  Switched
to only one dependency in SERPORT on TTY instead of many incorrect
dependencies.

Signed-off-by: Joe Millenbach <jmillenbach@gmail.com>
Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: metag_da: avoid getting tty kref in dashtty_timer()
James Hogan [Wed, 6 Feb 2013 14:45:02 +0000 (14:45 +0000)]
tty: metag_da: avoid getting tty kref in dashtty_timer()

Getting the tty kref in dashtty_timer() is no longer necessary since it
isn't needed in fetch_data() any longer (due to changes which make the
tty flip functions refer to tty_ports instead of tty_structs), so just
pass around a channel number instead.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: metag_da: Add metag DA TTY driver
James Hogan [Wed, 6 Feb 2013 14:45:01 +0000 (14:45 +0000)]
tty: metag_da: Add metag DA TTY driver

Add a TTY driver for communicating over a Meta DA (Debug Adapter)
channel using the bios channel SWITCH operation.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agosparc: explicitly include sched.h to get task_thread_info declaration
Stephen Rothwell [Wed, 6 Feb 2013 07:26:51 +0000 (18:26 +1100)]
sparc: explicitly include sched.h to get task_thread_info declaration

This was caused by commit 16559ae48c76 ("kgdb: remove #include
<linux/serial_8250.h> from kgdb.h") from the tty tree.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLL
Fabio Estevam [Tue, 5 Feb 2013 18:12:31 +0000 (16:12 -0200)]
serial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLL

If CONFIG_CONSOLE_POLL is not defined, the following build warning happens:

drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]

Move imx_port_ucrs_saver/restore under CONFIG_CONSOLE_POLL ifdef block to fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: serial: altera_jtaguart: Simplify altera_jtaguart_init()
Tobias Klauser [Tue, 5 Feb 2013 17:07:22 +0000 (18:07 +0100)]
tty: serial: altera_jtaguart: Simplify altera_jtaguart_init()

No need for two separate return statements, consolidate them.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: serial: altera_uart: Simplify altera_uart_init()
Tobias Klauser [Tue, 5 Feb 2013 17:07:42 +0000 (18:07 +0100)]
tty: serial: altera_uart: Simplify altera_uart_init()

No need for two separate return statements, consolidate them.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoOMAP/serial: Fix incorrect Rx FIFO threshold setting, LSR validation on Tx, and Tx...
Alexey Pelykh [Mon, 4 Feb 2013 17:19:46 +0000 (12:19 -0500)]
OMAP/serial: Fix incorrect Rx FIFO threshold setting, LSR validation on Tx, and Tx FIFO IRQ generation

Original configuration of Rx FIFO threshold contained an error
that resulted Rx threshold to be effectively set to 1 character
instead of 16 characters, as noted in comments.
Checking LSR to contain UART_LSR_THRE bit set caused issue when
not all UART_IER_THRI interrupts have been properly handled.
This caused gap in Tx data, visible on high baud rates using
oscilloscope.
Setting OMAP_UART_SCR_TX_EMPTY bit in SCR caused UART_IER_THRI
interrupt to be raised only when Tx FIFO and Tx shift registers
are empty.

Signed-off-by: Alexey Pelykh <alexey.pelykh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: of_serial: unexport tegra_serial_handle_break
Stephen Warren [Thu, 31 Jan 2013 19:01:53 +0000 (12:01 -0700)]
tty: of_serial: unexport tegra_serial_handle_break

Tegra is only booted through device-tree now; there are no board files
left that use this function. Hence, don't export it. Move the static
inline definition into of_serial.c, so we can delete of_serial.h too.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopty: Ignore slave open count for master pty open
Peter Hurley [Wed, 30 Jan 2013 17:43:52 +0000 (12:43 -0500)]
pty: Ignore slave open count for master pty open

Multiple slave pty opens may be performed in parallel with the
master open. Of course, all the slave opens will fail because the
master pty is still locked but during this time the slave pty
count will be artificially greater than 1. This is should not
cause the master pty open to fail.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: Document required behavior of tty driver close()
Peter Hurley [Wed, 30 Jan 2013 17:43:51 +0000 (12:43 -0500)]
tty: Document required behavior of tty driver close()

If the tty driver open() fails, the tty driver close() is still
called during the resultant tty release.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopty: Ignore slave pty close() if never successfully opened
Peter Hurley [Wed, 30 Jan 2013 17:43:50 +0000 (12:43 -0500)]
pty: Ignore slave pty close() if never successfully opened

If the master and slave ptys are opened in parallel, the slave open
fails because the pty is still locked. This is as designed.
However, pty_close() is still called for the slave pty which sets
TTY_OTHER_CLOSED in the master pty. This can cause the master open
to fail as well.

Use a common pattern in other tty drivers by setting TTY_IO_ERROR
until the open is successful and only closing the pty if not set.

Note: the master pty always closes regardless of whether the open
was successful, so that proper cleanup can occur.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopty: Fix BUG()s when ptmx_open() errors out
Peter Hurley [Wed, 30 Jan 2013 17:43:49 +0000 (12:43 -0500)]
pty: Fix BUG()s when ptmx_open() errors out

If pmtx_open() fails to get a slave inode or fails the pty_open(),
the tty is released as part of the error cleanup. As evidenced by the
first BUG stacktrace below, pty_close() assumes that the linked pty has
a valid, initialized inode* stored in driver_data.

Also, as evidenced by the second BUG stacktrace below, pty_unix98_shutdown()
assumes that the master pty's driver_data has been initialized.

1) Fix the invalid assumption in pty_close().
2) Initialize driver_data immediately so proper devpts fs cleanup occurs.

Fixes this BUG:

[  815.868844] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[  815.869018] IP: [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.869190] PGD 7c775067 PUD 79deb067 PMD 0
[  815.869315] Oops: 0000 [#1] PREEMPT SMP
[  815.869443] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi microcode snd_rawmidi psmouse serio_raw snd_seq_midi_event snd_seq snd_timer$
[  815.870025] CPU 0
[  815.870143] Pid: 27819, comm: stress_test_tty Tainted: G        W    3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[  815.870386] RIP: 0010:[<ffffffff81207bcc>]  [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.870540] RSP: 0018:ffff88007d3e1ac8  EFLAGS: 00010282
[  815.870661] RAX: ffff880079c20800 RBX: 0000000000000000 RCX: 0000000000000000
[  815.870804] RDX: ffff880079c209a8 RSI: 0000000000000286 RDI: 0000000000000000
[  815.870933] RBP: ffff88007d3e1ae8 R08: 0000000000000000 R09: 0000000000000000
[  815.871078] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88007bfb7e00
[  815.871209] R13: 0000000000000005 R14: ffff880079c20c00 R15: ffff880079c20c00
[  815.871343] FS:  00007f2e86206700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
[  815.871495] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  815.871617] CR2: 0000000000000028 CR3: 000000007ae56000 CR4: 00000000000006f0
[  815.871752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  815.871902] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  815.872012] Process stress_test_tty (pid: 27819, threadinfo ffff88007d3e0000, task ffff88007c874530)
[  815.872012] Stack:
[  815.872012]  ffff88007bfb7e00 ffff880079c20c00 ffff88007bfb7e00 0000000000000005
[  815.872012]  ffff88007d3e1b08 ffffffff81417be7 ffff88007caa9bd8 ffff880079c20800
[  815.872012]  ffff88007d3e1bc8 ffffffff8140e5f8 0000000000000000 0000000000000000
[  815.872012] Call Trace:
[  815.872012]  [<ffffffff81417be7>] pty_close+0x157/0x170
[  815.872012]  [<ffffffff8140e5f8>] tty_release+0x138/0x580
[  815.872012]  [<ffffffff816d29f3>] ? _raw_spin_lock+0x23/0x30
[  815.872012]  [<ffffffff816d267a>] ? _raw_spin_unlock+0x1a/0x40
[  815.872012]  [<ffffffff816d0178>] ? __mutex_unlock_slowpath+0x48/0x60
[  815.872012]  [<ffffffff81417dff>] ptmx_open+0x11f/0x180
[  815.872012]  [<ffffffff8119394b>] chrdev_open+0x9b/0x1c0
[  815.872012]  [<ffffffff8118d643>] do_dentry_open+0x203/0x290
[  815.872012]  [<ffffffff811938b0>] ? cdev_put+0x30/0x30
[  815.872012]  [<ffffffff8118d705>] finish_open+0x35/0x50
[  815.872012]  [<ffffffff8119dcce>] do_last+0x6fe/0xe90
[  815.872012]  [<ffffffff8119a7af>] ? link_path_walk+0x7f/0x880
[  815.872012]  [<ffffffff810909d5>] ? cpuacct_charge+0x75/0x80
[  815.872012]  [<ffffffff8119e51c>] path_openat+0xbc/0x4e0
[  815.872012]  [<ffffffff816d0fd0>] ? __schedule+0x400/0x7f0
[  815.872012]  [<ffffffff8140e956>] ? tty_release+0x496/0x580
[  815.872012]  [<ffffffff8119ec11>] do_filp_open+0x41/0xa0
[  815.872012]  [<ffffffff816d267a>] ? _raw_spin_unlock+0x1a/0x40
[  815.872012]  [<ffffffff811abe39>] ? __alloc_fd+0xe9/0x140
[  815.872012]  [<ffffffff8118ea44>] do_sys_open+0xf4/0x1e0
[  815.872012]  [<ffffffff8118eb51>] sys_open+0x21/0x30
[  815.872012]  [<ffffffff816da499>] system_call_fastpath+0x16/0x1b
[  815.872012] Code: 0f 1f 80 00 00 00 00 45 31 e4 eb d7 0f 0b 90 0f 1f 44 00 00 55 48 89 e5 48 83 ec 20 48 89 5d e8 48 89 fb 4c 89 65 f0 4c 89 6d f8 <48> 8b 47 28 48 81 78 58 d1 1c 0$
[  815.872012] RIP  [<ffffffff81207bcc>] devpts_pty_kill+0x1c/0xa0
[  815.872012]  RSP <ffff88007d3e1ac8>
[  815.872012] CR2: 0000000000000028
[  815.897036] ---[ end trace eadf50b7f34e47d5 ]---

Fixes this BUG also:

[  608.366836] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[  608.366948] IP: [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.367050] PGD 7c75b067 PUD 7b919067 PMD 0
[  608.367135] Oops: 0000 [#1] PREEMPT SMP
[  608.367201] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event microcode snd_seq psmouse snd_timer snd_seq_device serio_raw snd mac_hid soundcore snd_page_alloc rfcomm virtio_balloon parport_pc bnep bluetooth ppdev i2c_piix4 lp parport floppy
[  608.367617] CPU 2
[  608.367669] Pid: 1918, comm: stress_test_tty Tainted: G        W    3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[  608.367796] RIP: 0010:[<ffffffff812078d8>]  [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.367885] RSP: 0018:ffff88007ae41a88  EFLAGS: 00010286
[  608.367951] RAX: ffffffff81417e80 RBX: ffff880036472400 RCX: 0000000180400028
[  608.368010] RDX: ffff880036470004 RSI: 0000000000000004 RDI: 0000000000000000
[  608.368010] RBP: ffff88007ae41a98 R08: 0000000000000000 R09: 0000000000000001
[  608.368010] R10: ffffea0001f22e40 R11: ffffffff814151d5 R12: 0000000000000004
[  608.368010] R13: ffff880036470000 R14: 0000000000000004 R15: ffff880036472400
[  608.368010] FS:  00007ff7a5268700(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000
[  608.368010] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  608.368010] CR2: 0000000000000028 CR3: 000000007a0fd000 CR4: 00000000000006e0
[  608.368010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  608.368010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  608.368010] Process stress_test_tty (pid: 1918, threadinfo ffff88007ae40000, task ffff88003688dc40)
[  608.368010] Stack:
[  608.368010]  ffff880036472400 0000000000000001 ffff88007ae41aa8 ffffffff81417e98
[  608.368010]  ffff88007ae41ac8 ffffffff8140c42b ffff88007ac73100 ffff88007ac73100
[  608.368010]  ffff88007ae41b98 ffffffff8140ead5 ffff88007ae41b38 ffff88007ca40e40
[  608.368010] Call Trace:
[  608.368010]  [<ffffffff81417e98>] pty_unix98_shutdown+0x18/0x20
[  608.368010]  [<ffffffff8140c42b>] release_tty+0x3b/0xe0
[  608.368010]  [<ffffffff8140ead5>] __tty_release+0x575/0x5d0
[  608.368010]  [<ffffffff816d2c63>] ? _raw_spin_lock+0x23/0x30
[  608.368010]  [<ffffffff816d28ea>] ? _raw_spin_unlock+0x1a/0x40
[  608.368010]  [<ffffffff816d03e8>] ? __mutex_unlock_slowpath+0x48/0x60
[  608.368010]  [<ffffffff8140ef79>] tty_open+0x449/0x5f0
[  608.368010]  [<ffffffff8119394b>] chrdev_open+0x9b/0x1c0
[  608.368010]  [<ffffffff8118d643>] do_dentry_open+0x203/0x290
[  608.368010]  [<ffffffff811938b0>] ? cdev_put+0x30/0x30
[  608.368010]  [<ffffffff8118d705>] finish_open+0x35/0x50
[  608.368010]  [<ffffffff8119dcce>] do_last+0x6fe/0xe90
[  608.368010]  [<ffffffff8119a7af>] ? link_path_walk+0x7f/0x880
[  608.368010]  [<ffffffff8119e51c>] path_openat+0xbc/0x4e0
[  608.368010]  [<ffffffff8119ec11>] do_filp_open+0x41/0xa0
[  608.368010]  [<ffffffff816d28ea>] ? _raw_spin_unlock+0x1a/0x40
[  608.368010]  [<ffffffff811abe39>] ? __alloc_fd+0xe9/0x140
[  608.368010]  [<ffffffff8118ea44>] do_sys_open+0xf4/0x1e0
[  608.368010]  [<ffffffff816d2c63>] ? _raw_spin_lock+0x23/0x30
[  608.368010]  [<ffffffff8118eb51>] sys_open+0x21/0x30
[  608.368010]  [<ffffffff816da719>] system_call_fastpath+0x16/0x1b
[  608.368010] Code: ec 48 83 c4 10 5b 41 5c 5d c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 48 83 ec 10 4c 89 65 f8 41 89 f4 48 89 5d f0 <48> 8b 47 28 48 81 78 58 d1 1c 00 00 74 0b 48 8b 05 4b 66 cf 00
[  608.368010] RIP  [<ffffffff812078d8>] devpts_kill_index+0x18/0x70
[  608.368010]  RSP <ffff88007ae41a88>
[  608.368010] CR2: 0000000000000028
[  608.394153] ---[ end trace afe83b0fb5fbda93 ]---

Reported-by: Ilya Zykov <ilya@ilyx.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agokgdb: remove #include <linux/serial_8250.h> from kgdb.h
Greg Kroah-Hartman [Mon, 4 Feb 2013 23:35:26 +0000 (15:35 -0800)]
kgdb: remove #include <linux/serial_8250.h> from kgdb.h

There's no reason kgdb.h itself needs to include the 8250 serial port
header file.  So push it down to the _very_ limited number of individual
drivers that need the values in that file, and fix up the places where
people really wanted serial_core.h and platform_device.h.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial_core: Fix type definition for PORT_BRCM_TRUMANAGE.
Michael Chan [Wed, 30 Jan 2013 01:54:44 +0000 (17:54 -0800)]
serial_core: Fix type definition for PORT_BRCM_TRUMANAGE.

It was mistakenly defined to be 24 instead of the next higher number 25.

Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Stephen Hurd <shurd@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Cc: stable <stable@vger.kernel.org> # 3.8
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: Use raw spin lock to protect the TTY read section
Ivo Sieben [Mon, 28 Jan 2013 12:32:01 +0000 (13:32 +0100)]
tty: Use raw spin lock to protect the TTY read section

The "normal" spin lock that guards the N_TTY line discipline read section
is replaced by a raw spin lock.

On a PREEMP_RT system this prevents unwanted scheduling overhead when data is
read at the same time as data is being received: while RX IRQ threaded handling
is busy a TTY read call is performed from a RT priority > threaded IRQ priority.
The read call tries to take the read section spin lock (held by the threaded
IRQ) which blocks and causes a context switch to/from the threaded IRQ handler
until the spin lock is unlocked.

Signed-off-by: Ivo Sieben <meltedpianoman@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: set_termios/set_termiox should not return -EINTR
Oleg Nesterov [Tue, 29 Jan 2013 19:07:41 +0000 (20:07 +0100)]
tty: set_termios/set_termiox should not return -EINTR

See https://bugzilla.redhat.com/show_bug.cgi?id=904907
read command causes bash to abort with double free or corruption (out).

A simple test-case from Roman:

// Compile the reproducer and send sigchld ti that process.
// EINTR occurs even if SA_RESTART flag is set.

void handler(int sig)
{
}

main()
{
  struct sigaction act;
  act.sa_handler = handler;
  act.sa_flags = SA_RESTART;
  sigaction (SIGCHLD, &act, 0);
  struct termio ttp;
  ioctl(0, TCGETA, &ttp);
  while(1)
  {
    if (ioctl(0, TCSETAW, ttp) < 0)
      {
if (errno == EINTR)
{
  fprintf(stderr, "BUG!"); return(1);
}
      }
  }
}

Change set_termios/set_termiox to return -ERESTARTSYS to fix this
particular problem.

I didn't dare to change other EINTR's in drivers/tty/, but they look
equally wrong.

Reported-by: Roman Rakus <rrakus@redhat.com>
Reported-by: Lingzhu Xiang <lxiang@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotty: Prevent deadlock in n_gsm driver
Dirkjan Bussink [Wed, 30 Jan 2013 10:44:50 +0000 (11:44 +0100)]
tty: Prevent deadlock in n_gsm driver

This change fixes a deadlock when the multiplexer is closed while there
are still client side ports open.

When the multiplexer is closed and there are active tty's it tries to
close them with tty_vhangup. This has a problem though, because
tty_vhangup needs the tty_lock. This patch changes it to unlock the
tty_lock before attempting the hangup and relocks afterwards. The
additional call to tty_port_tty_set is needed because otherwise the
port stays active because of the reference counter.

This change also exposed another problem that other code paths don't
expect that the multiplexer could have been closed. This patch also adds
checks for these cases in the gsmtty_ class of function that could be
called.

The documentation explicitly states that "first close all virtual ports
before closing the physical port" but we've found this to not always
reality in our field situations. The GPRS / UTMS modem sometimes crashes
and needs a power cycle in that case which means cleanly shutting down
everything is not always possible. This change makes it much more robust
for our situation where at least the system is recoverable with this patch
and doesn't hang in a deadlock situation inside the kernel.

The patch is against the long term support kernel (3.4.27) and should
apply cleanly to more recent branches. Tested with a Telit GE864-QUADV2
and Telit HE910 modem.

Signed-off-by: Dirkjan Bussink <dirkjan.bussink@nedap.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: ralink: adds support for the serial core found on ralink wisoc
John Crispin [Fri, 25 Jan 2013 18:39:51 +0000 (19:39 +0100)]
serial: ralink: adds support for the serial core found on ralink wisoc

The MIPS based Ralink WiSoC platform has 1 or more 8250 compatible serial cores.
To make them work we require the same quirks that are used by AU1x00.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoTTY: synclink: Convert + to | for bit operations
Joe Perches [Mon, 28 Jan 2013 02:21:00 +0000 (18:21 -0800)]
TTY: synclink: Convert + to | for bit operations

Dan Carpenter noticed a missing set of parentheses
around a multiple field addition.

https://lkml.org/lkml/2013/1/27/166

His original commit message:

There is a kind of precedence problem here, but it doesn't affect how
the code works because ->serial_signals is unsigned char.  We want to
clear two flags here.

#define SerialSignal_RTS            0x20     /* Request to Send */
#define SerialSignal_DTR            0x80     /* Data Terminal Ready */

Without the parenthesis then it does:

info->serial_signals &= 0x5f;

With the parenthesis it does:

info->serial_signals &= 0xffffff5f;

info->serial_signals is an unsigned char so the two statements are
equivalent, but it's cleaner to add the parenthesis.  In other dtr_rts()
functions the parenthesis are there so this makes it more consistent.

Other changes:

Convert all + uses to | for these bit operations.

Reorder the multiple fields for consistency.
Update the comments too.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial/8250: Add suport for later SUNIX (TIMEDIA) boards.
Stephen Chivers [Mon, 28 Jan 2013 08:49:20 +0000 (19:49 +1100)]
serial/8250: Add suport for later SUNIX (TIMEDIA) boards.

Add support for later SUNIX (TIMEDIA) Universal PCI Single and Multi-Port
Communications Boards.

These boards have PCI Vendor ID 1fd4 with device ID 1999 but otherwise
appear to be the same as the TIMEDIA boards already supported by 8250_pci
and parport_serial.

Tested with:

a. the two port serial board part number SER5037A,
b. the two port serial and one port parallel board part number
   MIO5079A.

Signed-off-by: Stephen Chivers <schivers@csc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoRevert "n_tty: Unthrottle tty when flushing read buffer"
Greg Kroah-Hartman [Wed, 30 Jan 2013 04:35:35 +0000 (23:35 -0500)]
Revert "n_tty: Unthrottle tty when flushing read buffer"

This reverts commit 58f82be334ede87aa6ff6fa1afdb05552be907be.

This was fixed by a previous patch already.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge 3.8-rc5 into tty-next
Greg Kroah-Hartman [Fri, 25 Jan 2013 21:27:36 +0000 (13:27 -0800)]
Merge 3.8-rc5 into tty-next

This resolves a number of tty driver merge issues found in linux-next

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoLinux 3.8-rc5
Linus Torvalds [Fri, 25 Jan 2013 19:57:28 +0000 (11:57 -0800)]
Linux 3.8-rc5

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Fri, 25 Jan 2013 18:55:21 +0000 (10:55 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "It turns out that we had two crc bugs when running fsx-linux in a
  loop.  Many thanks to Josef, Miao Xie, and Dave Sterba for nailing it
  all down.  Miao also has a new OOM fix in this v2 pull as well.

  Ilya fixed a regression Liu Bo found in the balance ioctls for pausing
  and resuming a running balance across drives.

  Josef's orphan truncate patch fixes an obscure corruption we'd see
  during xfstests.

  Arne's patches address problems with subvolume quotas.  If the user
  destroys quota groups incorrectly the FS will refuse to mount.

  The rest are smaller fixes and plugs for memory leaks."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (30 commits)
  Btrfs: fix repeated delalloc work allocation
  Btrfs: fix wrong max device number for single profile
  Btrfs: fix missed transaction->aborted check
  Btrfs: Add ACCESS_ONCE() to transaction->abort accesses
  Btrfs: put csums on the right ordered extent
  Btrfs: use right range to find checksum for compressed extents
  Btrfs: fix panic when recovering tree log
  Btrfs: do not allow logged extents to be merged or removed
  Btrfs: fix a regression in balance usage filter
  Btrfs: prevent qgroup destroy when there are still relations
  Btrfs: ignore orphan qgroup relations
  Btrfs: reorder locks and sanity checks in btrfs_ioctl_defrag
  Btrfs: fix unlock order in btrfs_ioctl_rm_dev
  Btrfs: fix unlock order in btrfs_ioctl_resize
  Btrfs: fix "mutually exclusive op is running" error code
  Btrfs: bring back balance pause/resume logic
  btrfs: update timestamps on truncate()
  btrfs: fix btrfs_cont_expand() freeing IS_ERR em
  Btrfs: fix a bug when llseek for delalloc bytes behind prealloc extents
  Btrfs: fix off-by-one in lseek
  ...

11 years agoserial: tegra: Fix compilation error
Venu Byravarasu [Wed, 23 Jan 2013 07:22:13 +0000 (12:52 +0530)]
serial: tegra: Fix compilation error

Fix compilation error, by adding the correct header file
for Tegra clocks.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: pxa: fine-tune clk useage
Yi Zhang [Wed, 23 Jan 2013 01:52:25 +0000 (09:52 +0800)]
serial: pxa: fine-tune clk useage

1) add clk_enable/disable in serial_pxa_console_write()
2) add clk_prepare() to follow common clock driver

Signed-off-by: Yi Zhang <yizhang@marvell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoserial: pch_uart: fix sysrq handling for pch_uart
Liang Li [Thu, 24 Jan 2013 04:31:27 +0000 (12:31 +0800)]
serial: pch_uart: fix sysrq handling for pch_uart

When PCH_UART_CONSOLE and SERIAL_CORE_CONSOLE is not set neither, the
uart_port will have no 'sysrq' member hence their will need a '#ifdef'
in pch_uart.c to handle the case, otherwise we'll see compile error
like this:

  CC [M]  drivers/tty/serial/pch_uart.o
drivers/tty/serial/pch_uart.c: In function 'pch_uart_hal_read':
drivers/tty/serial/pch_uart.c:572:11: error: 'struct uart_port' has no member named 'sysrq'
make[4]: *** [drivers/tty/serial/pch_uart.o] Error 1

Reported-by: Randy Dunlap <rdunlap@infradead.org>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Liang Li <liang.li@windriver.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agon_tty: Unthrottle tty when flushing read buffer
Karthik Manamcheri [Wed, 23 Jan 2013 22:36:18 +0000 (16:36 -0600)]
n_tty: Unthrottle tty when flushing read buffer

When the tty input buffer is full and thereby throttled,
flushing/resetting the read buffer should unthrottle to allow more
data to be received.

Signed-off-by: Karthik Manamcheri <Karthik.Manamcheri@ni.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agogoldfish: move to tty_port for flip buffers
Alan Cox [Fri, 25 Jan 2013 15:05:30 +0000 (15:05 +0000)]
goldfish: move to tty_port for flip buffers

Sorry forgot to merge this in the original submission. Resync
with the tty tree changes moving the buffers into the tty_port

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 25 Jan 2013 03:15:43 +0000 (19:15 -0800)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Two small cifs fixes"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  fs/cifs/cifs_dfs_ref.c: fix potential memory leakage
  cifs: fix srcip_matches() for ipv6

11 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 25 Jan 2013 03:14:22 +0000 (19:14 -0800)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixlet from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Emulate dcbf

11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Thu, 24 Jan 2013 20:44:57 +0000 (12:44 -0800)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "A number of fixes:

  Patrik found a problem with preempt counting in the VFP assembly
  functions which can cause the preempt count to be upset.

  Nicolas fixed a problem with the parsing of the DT when it straddles a
  1MB boundary.

  Subhash Jadavani reported a problem with sparsemem and our highmem
  support for cache maintanence for DMA areas, and TI found a bug in
  their strongly ordered memory mapping type.

  Also, three fixes by way of Will Deacon's tree from Dave Martin for
  instruction compatibility and Marc Zyngier to fix hypervisor boot mode
  issues."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7629/1: mm: Fix missing XN flag for for MT_MEMORY_SO
  ARM: DMA: Fix struct page iterator in dma_cache_maint() to work with sparsemem
  ARM: 7628/1: head.S: map one extra section for the ATAG/DTB area
  ARM: 7627/1: Predicate preempt logic on PREEMP_COUNT not PREEMPT alone
  ARM: virt: simplify __hyp_stub_install epilog
  ARM: virt: boot secondary CPUs through the right entry point
  ARM: virt: Avoid bx instruction for compatibility with <=ARMv4

11 years agoMerge tag 'fixes-for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 24 Jan 2013 20:42:50 +0000 (12:42 -0800)]
Merge tag 'fixes-for-linus2' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Here's a long-pending fixes pull request for arm-soc (I didn't send
  one in the -rc4 cycle).

  The larger deltas are from:

   - A fixup of error paths in the mvsdio driver

   - Header file move for a driver that hadn't been properly converted
     to multiplatform on i.MX, which was causing build failures when
     included

   - Device tree updates for at91 dealing mostly with their new pinctrl
     setup merged in 3.8 and mistakes in those initial configs

  The rest are the normal mix of small fixes all over the place; sunxi,
  omap, imx, mvebu, etc, etc."

* tag 'fixes-for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
  mfd: vexpress-sysreg: Don't skip initialization on probe
  ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
  ARM: vexpress: extend the MPIDR range used for pen release check
  ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
  ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
  ARM: at91/at91_dt_defconfig: remove memory specification to cmdline
  ARM: at91/dts: add macb mii pinctrl config for kizbox
  ARM: at91: rm9200: remake the BGA as default version
  ARM: at91: fix gpios on i2c-gpio for RM9200 DT
  ARM: at91/at91sam9x5 DTS: add SCK USART pins
  ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
  ARM: at91/at91-pinctrl documentation: fix typo and add some details
  ARM: kirkwood: fix missing #interrupt-cells property
  mmc: mvsdio: use devm_ API to simplify/correct error paths.
  clk: mvebu/clk-cpu.c: fix memory leakage
  ARM: OMAP2+: omap4-panda: add UART2 muxing for WiLink shared transport
  ARM: OMAP2+: DT node Timer iteration fix
  ARM: OMAP2+: Fix section warning for omap_init_ocp2scp()
  ARM: OMAP2+: fix build break for omapdrm
  ARM: OMAP2: Fix missing omap2xxx_clkt_vps_late_init function calls
  ...

11 years agoMerge tag 'pm+acpi-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 24 Jan 2013 18:19:13 +0000 (10:19 -0800)]
Merge tag 'pm+acpi-for-3.8-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - Two cpuidle initialization fixes from Konrad Rzeszutek Wilk.

 - cpufreq regression fixes for AMD processors from Borislav Petkov,
   Stefan Bader, and Matthew Garrett.

 - ACPI cpufreq fix from Thomas Schlichter.

 - cpufreq and devfreq fixes related to incorrect usage of operating
   performance points (OPP) framework and RCU from Nishanth Menon.

 - APEI workaround for incorrect BIOS information from Lans Zhang.

* tag 'pm+acpi-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Add module aliases for acpi-cpufreq
  ACPI: Check MSR valid bit before using P-state frequencies
  PM / devfreq: exynos4_bus: honor RCU lock usage
  PM / devfreq: add locking documentation for recommended_opp
  cpufreq: cpufreq-cpu0: use RCU locks around usage of OPP
  cpufreq: OMAP: use RCU locks around usage of OPP
  ACPI, APEI: Fixup incorrect 64-bit access width firmware bug
  ACPI / processor: Get power info before updating the C-states
  powernow-k8: Add a kconfig dependency on acpi-cpufreq
  ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled
  intel_idle: Don't register CPU notifier if we are not running.

11 years agoMerge tag 'regmap-fix-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broon...
Linus Torvalds [Thu, 24 Jan 2013 18:18:37 +0000 (10:18 -0800)]
Merge tag 'regmap-fix-3.8-rc4' of git://git./linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "One more oversight in the debugfs code was reported and fixed, plus a
  documentation fix."

* tag 'regmap-fix-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: fix small typo in regmap_bulk_write comment
  regmap: debugfs: Fix seeking from the cache

11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Thu, 24 Jan 2013 18:17:49 +0000 (10:17 -0800)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "A few fixes on slave dmanengine.  There are trivial fixes in imx-dma,
  tegra-dma & ioat driver"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: tegra: implement flags parameters for cyclic transfer
  dmaengine: imx-dma: Disable use of hw_chain to fix sg_dma transfers.
  ioat: Fix DMA memory sync direction correct flag

11 years agoMerge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux
Linus Torvalds [Thu, 24 Jan 2013 18:17:03 +0000 (10:17 -0800)]
Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux

Pill i2c fixes from Wolfram Sang:
 "Here are a few, typical driver fixes for the I2C subsystem"

* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
  i2c-designware: add missing MODULE_LICENSE
  i2c: omap: fix draining irq handling
  i2c: omap: errata i462: fix incorrect ack for arbitration lost interrupt
  i2c: muxes: fix wrong use of sizeof(ptr)
  i2c: sirf: register i2c_client from dt child-nodes in probe entry
  i2c: mxs: Fix type of error code
  i2c: mxs: Fix misuse init_completion

11 years agoBtrfs: fix repeated delalloc work allocation
Miao Xie [Tue, 22 Jan 2013 10:49:00 +0000 (10:49 +0000)]
Btrfs: fix repeated delalloc work allocation

btrfs_start_delalloc_inodes() locks the delalloc_inodes list, fetches the
first inode, unlocks the list, triggers btrfs_alloc_delalloc_work/
btrfs_queue_worker for this inode, and then it locks the list, checks the
head of the list again. But because we don't delete the first inode that it
deals with before, it will fetch the same inode. As a result, this function
allocates a huge amount of btrfs_delalloc_work structures, and OOM happens.

Fix this problem by splice this delalloc list.

Reported-by: Alex Lyakas <alex.btrfs@zadarastorage.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix wrong max device number for single profile
Miao Xie [Wed, 16 Jan 2013 11:27:17 +0000 (11:27 +0000)]
Btrfs: fix wrong max device number for single profile

The max device number of single profile is 1, not 0 (0 means 'as many as
possible'). Fix it.

Cc: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix missed transaction->aborted check
Miao Xie [Tue, 15 Jan 2013 06:29:12 +0000 (06:29 +0000)]
Btrfs: fix missed transaction->aborted check

First, though the current transaction->aborted check can stop the commit early
and avoid unnecessary operations, it is too early, and some transaction handles
don't end, those handles may set transaction->aborted after the check.

Second, when we commit the transaction, we will wake up some worker threads to
flush the space cache and inode cache. Those threads also allocate some transaction
handles and may set transaction->aborted if some serious error happens.

So we need more check for ->aborted when committing the transaction. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: Add ACCESS_ONCE() to transaction->abort accesses
Miao Xie [Tue, 15 Jan 2013 06:27:25 +0000 (06:27 +0000)]
Btrfs: Add ACCESS_ONCE() to transaction->abort accesses

We may access and update transaction->aborted on the different CPUs without
lock, so we need ACCESS_ONCE() wrapper to prevent the compiler from creating
unsolicited accesses and make sure we can get the right value.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: put csums on the right ordered extent
Josef Bacik [Tue, 22 Jan 2013 20:43:09 +0000 (15:43 -0500)]
Btrfs: put csums on the right ordered extent

I noticed a WARN_ON going off when adding csums because we were going over
the amount of csum bytes that should have been allowed for an ordered
extent.  This is a leftover from when we used to hold the csums privately
for direct io, but now we use the normal ordered sum stuff so we need to
make sure and check if we've moved on to another extent so that the csums
are added to the right extent.  Without this we could end up with csums for
bytenrs that don't have extents to cover them yet.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: use right range to find checksum for compressed extents
Liu Bo [Sun, 6 Jan 2013 03:38:22 +0000 (03:38 +0000)]
Btrfs: use right range to find checksum for compressed extents

For compressed extents, the range of checksum is covered by disk length,
and the disk length is different with ram length, so we need to use disk
length instead to get us the right checksum.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix panic when recovering tree log
Josef Bacik [Tue, 18 Dec 2012 16:39:19 +0000 (11:39 -0500)]
Btrfs: fix panic when recovering tree log

A user reported a BUG_ON(ret) that occured during tree log replay.  Ret was
-EAGAIN, so what I think happened is that we removed an extent that covered
a bitmap entry and an extent entry.  We remove the part from the bitmap and
return -EAGAIN and then search for the next piece we want to remove, which
happens to be an entire extent entry, so we just free the sucker and return.
The problem is ret is still set to -EAGAIN so we trip the BUG_ON().  The
user used btrfs-zero-log so I'm not 100% sure this is what happened so I've
added a WARN_ON() to catch the other possibility.  Thanks,

Reported-by: Jan Steffens <jan.steffens@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: do not allow logged extents to be merged or removed
Josef Bacik [Thu, 24 Jan 2013 17:02:07 +0000 (12:02 -0500)]
Btrfs: do not allow logged extents to be merged or removed

We drop the extent map tree lock while we're logging extents, so somebody
could come in and merge another extent into this one and screw up our
logging, or they could even remove us from the list which would keep us from
logging the extent or freeing our ref on it, so we need to make sure to not
clear LOGGING until after the extent is logged, and then we can merge it to
adjacent extents.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoMerge branch 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux into...
Olof Johansson [Thu, 24 Jan 2013 16:12:24 +0000 (08:12 -0800)]
Merge branch 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux into fixes

From Pawel Moll:
- makes the V2P-CA15_A7 (a.k.a. TC2) work with 3.8 kernels
- improves vexpress-sysreg.c behaviour on arm64 platforms

* 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux:
  mfd: vexpress-sysreg: Don't skip initialization on probe
  ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
  ARM: vexpress: extend the MPIDR range used for pen release check

11 years agoMerge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
Olof Johansson [Thu, 24 Jan 2013 15:49:49 +0000 (07:49 -0800)]
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

From Nicolas Ferre:
Here are fixes for AT91 that are mainly related to device tree.
One RM9200 setup option is the only C code change.
Some documentation changes can clarify the pinctrl use.
Then, some defconfig modifications are allowing the affected platforms
to boot.

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
  ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
  ARM: at91/at91_dt_defconfig: remove memory specification to cmdline
  ARM: at91/dts: add macb mii pinctrl config for kizbox
  ARM: at91: rm9200: remake the BGA as default version
  ARM: at91: fix gpios on i2c-gpio for RM9200 DT
  ARM: at91/at91sam9x5 DTS: add SCK USART pins
  ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
  ARM: at91/at91-pinctrl documentation: fix typo and add some details

11 years agomfd: vexpress-sysreg: Don't skip initialization on probe
Pawel Moll [Tue, 27 Nov 2012 16:48:50 +0000 (16:48 +0000)]
mfd: vexpress-sysreg: Don't skip initialization on probe

The vexpress-sysreg driver does not have to be initialized
early, when the platform doesn't require this. Unfortunately
in such case it wasn't initialized correctly - master site
lookup and config bridge registration were missing. Fixed now.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
Pawel Moll [Thu, 24 Jan 2013 11:48:54 +0000 (11:48 +0000)]
ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree

As the kernel is able to cope with multiple clusters,
uncomment the A7 cores in the Device Tree for V2P-CA15_A7
tile, making all 5 cores available to the user.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoARM: vexpress: extend the MPIDR range used for pen release check
Lorenzo Pieralisi [Tue, 22 Jan 2013 10:56:40 +0000 (10:56 +0000)]
ARM: vexpress: extend the MPIDR range used for pen release check

In ARM multi-cluster systems the MPIDR affinity level 0 cannot be used as a
single cpu identifier, affinity levels 1 and 2 must be taken into account as
well.
This patch extends the MPIDR usage to affinity levels 1 and 2 in versatile
secondary cores start up code in order to compare the passed pen_release
value with the full-blown affinity mask.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoMerge remote-tracking branch 'regmap/fix/debugfs' into tmp
Mark Brown [Thu, 24 Jan 2013 11:04:16 +0000 (19:04 +0800)]
Merge remote-tracking branch 'regmap/fix/debugfs' into tmp

11 years agoMerge tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6 into...
Olof Johansson [Thu, 24 Jan 2013 04:35:02 +0000 (20:35 -0800)]
Merge tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo:

This is yet another critical imxfb fixes held off by absence of FB
maintainer for some time.

* tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6:
  video: imxfb: Do not crash on reboot

11 years agoMerge tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux...
Olof Johansson [Thu, 24 Jan 2013 04:30:52 +0000 (20:30 -0800)]
Merge tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper:

mvebu fixes for v3.8-rc5
 - fix memory leak in mvebu/clk-cpu.c
 - use devm_ to correct/simplify error paths in mvsdio
 - add missing #interrupt-cells property in kirkwood

* tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux:
  ARM: kirkwood: fix missing #interrupt-cells property
  mmc: mvsdio: use devm_ API to simplify/correct error paths.
  clk: mvebu/clk-cpu.c: fix memory leakage

11 years agoMerge tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Thu, 24 Jan 2013 04:11:35 +0000 (20:11 -0800)]
Merge tag 'usb-3.8-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull more USB fixes from Greg Kroah-Hartman:
 "Here are some more USB fixes for the 3.8-rc4 tree.

  Some gadget driver fixes, and finally resolved the ehci-mxc driver
  build issues (it's just some code moving around and being deleted)."

* tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: EHCI: fix build error in ehci-mxc
  USB: EHCI: add a name for the platform-private field
  USB: EHCI: fix incorrect configuration test
  USB: EHCI: Move definition of EHCI_STATS to ehci.h
  USB: UHCI: fix IRQ race during initialization
  usb: gadget: FunctionFS: Fix missing braces in parse_opts
  usb: dwc3: gadget: fix ep->maxburst for ep0
  ARM: i.MX clock: Change the connection-id for fsl-usb2-udc
  usb: gadget: fsl_mxc_udc: replace MX35_IO_ADDRESS to ioremap
  usb: gadget: fsl-mxc-udc: replace cpu_is_xxx() with platform_device_id
  usb: musb: cppi_dma: drop '__init' annotation

11 years agoMerge tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Thu, 24 Jan 2013 04:10:48 +0000 (20:10 -0800)]
Merge tag 'char-misc-3.8-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull drivers/misc fix from Greg Kroah-Hartman:
 "Here is a single revert for the ti-st misc driver, fixing problem that
  was introduced in 3.7-rc1 that has been bothering people."

* tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Revert "drivers/misc/ti-st: remove gpio handling"

11 years agoMerge tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Thu, 24 Jan 2013 04:09:58 +0000 (20:09 -0800)]
Merge tag 'tty-3.8-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull a TTY maintainer patch from Greg Kroah-Hartman:
 "Just a MAINTAINERS update, now that Alan has left for a bit, I'll
  continue to watch over the serial drivers."

* tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  MAINTAINERS: Someone needs to watch over the serial drivers

11 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Thu, 24 Jan 2013 04:07:12 +0000 (20:07 -0800)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 - gspca: add needed delay for I2C traffic for sonixb/sonixj cameras
 - gspca: add one missing Kinect USB ID
 - usbvideo: some regression fixes
 - omap3isp: fix some build issues
 - videobuf2: fix video output handling
 - exynos s5p/m5mols: a few regression fixes.

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures
  [media] uvcvideo: Cleanup leftovers of partial revert
  [media] uvcvideo: Return -EACCES when trying to set a read-only control
  [media] omap3isp: Don't include <plat/cpu.h>
  [media] s5p-mfc: Fix interrupt error handling routine
  [media] s5p-fimc: Fix return value of __fimc_md_create_flite_source_links()
  [media] m5mols: Fix typo in get_fmt callback
  [media] v4l: vb2: Set data_offset to 0 for single-plane output buffers
  [media] [FOR,v3.8] omap3isp: Don't include deleted OMAP plat/ header files
  [media] gspca_sonixj: Add a small delay after i2c_w1
  [media] gspca_sonixb: Properly wait between i2c writes
  [media] gspca_kinect: add Kinect for Windows USB id

11 years agoMAINTAINERS: Someone needs to watch over the serial drivers
Greg Kroah-Hartman [Wed, 23 Jan 2013 23:45:23 +0000 (15:45 -0800)]
MAINTAINERS: Someone needs to watch over the serial drivers

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Wed, 23 Jan 2013 21:31:15 +0000 (13:31 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:
 "The asm-generic changeset has been ack'ed by Arnd."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up finit_module
  asm-generic/dma-mapping-broken.h: Provide dma_alloc_attrs()/dma_free_attrs()
  m68k: Provide dma_alloc_attrs()/dma_free_attrs()

11 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas...
Linus Torvalds [Wed, 23 Jan 2013 21:28:17 +0000 (13:28 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/cmarinas/linux-aarch64

Pull arm64 fixes from Catalin Marinas:
 - ELF coredump fix (more registers dumped than what user space expects)
 - SUBARCH name generation (s/aarch64/arm64/)

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: makefile: fix uname munging when setting ARCH on native machine
  arm64: elf: fix core dumping to match what glibc expects

11 years agoUSB: EHCI: fix build error in ehci-mxc
Alan Stern [Wed, 23 Jan 2013 18:26:15 +0000 (13:26 -0500)]
USB: EHCI: fix build error in ehci-mxc

This patch (as1643b) fixes a build error in ehci-hcd when compiling for
ARM with allmodconfig:

drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definition
drivers/usb/host/ehci-mxc.c:280:31: warning: 'ehci_mxc_driver' defined but not used [-Wunused-variable]
drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definition

The fix is to convert ehci-mxc over to the new "ehci-hcd is a library"
scheme so that it can coexist peacefully with the ehci-platform
driver.  As part of the conversion the ehci_mxc_priv data structure,
which was allocated dynamically, is now placed where it belongs: in
the private area at the end of struct ehci_hcd.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Wed, 23 Jan 2013 17:42:46 +0000 (09:42 -0800)]
Merge tag 'sound-3.8' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Only a few small HD-audio fixes:
   - Addition of new Conexant codec IDs
   - Two one-liners to add fixups for Realtek codecs
   - A last-minute regression fix for auto-mute with power-saving mode
     (regressed since 3.8-rc1)"

* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix inconsistent pin states after resume
  ALSA: hda - Add Conexant CX20755/20756/20757 codec IDs
  ALSA: hda - Add fixup for Acer AO725 laptop
  ALSA: hda - Fix mute led for another HP machine

11 years agoMAINTAINERS: remove me
Alan Cox [Wed, 23 Jan 2013 14:38:16 +0000 (14:38 +0000)]
MAINTAINERS: remove me

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoALSA: hda - Fix inconsistent pin states after resume
Takashi Iwai [Wed, 23 Jan 2013 14:58:40 +0000 (15:58 +0100)]
ALSA: hda - Fix inconsistent pin states after resume

The commit [26a6cb6c: ALSA: hda - Implement a poll loop for jacks as a
module parameter] introduced the polling jack detection code, but it
also moved the call of snd_hda_jack_set_dirty_all() in the resume path
after resume/init ops call.  This caused a regression when the jack
state has been changed during power-down (e.g. in the power save
mode).  Since the driver doesn't probe the new jack state but keeps
using the cached value due to no dirty flag, the pin state remains
also as if the jack is still plugged.

The fix is simply moving snd_hda_jack_set_dirty_all() to the original
position.

Reported-by: Manolo Díaz <diaz.manolo@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
Douglas Gilbert [Wed, 23 Jan 2013 08:50:02 +0000 (09:50 +0100)]
ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii

Concerning pinctrl_macb0_rmii_mii, values were okay, but not comments.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
Nicolas Ferre [Wed, 23 Jan 2013 09:06:46 +0000 (10:06 +0100)]
ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig

Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91_dt_defconfig: remove memory specification to cmdline
Nicolas Ferre [Wed, 23 Jan 2013 09:03:23 +0000 (10:03 +0100)]
ARM: at91/at91_dt_defconfig: remove memory specification to cmdline

No need for this cmdline option as we are using DT.
Moreover this defconfig is targeted to multiple SoC/boards: this option
was nonsense.

Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/dts: add macb mii pinctrl config for kizbox
Boris BREZILLON [Thu, 13 Dec 2012 14:03:08 +0000 (14:03 +0000)]
ARM: at91/dts: add macb mii pinctrl config for kizbox

This patch overrides default macb pinctrl config defined in
at91sam9260.dtsi (pinctrl_macb_rmii) with kizbox board config
(pinctrl_macb_rmii + pinctrl_macb_rmii_mii_alt).

Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91: rm9200: remake the BGA as default version
Jean-Christophe PLAGNIOL-VILLARD [Sun, 23 Dec 2012 18:07:49 +0000 (18:07 +0000)]
ARM: at91: rm9200: remake the BGA as default version

Make BGA as the default version as we are supposed to just have
to specify when we use the PQFP version.

Issue was existing since commit:
3e90772 (ARM: at91: fix at91rm9200 soc subtype handling).

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org> [v3.3]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91: fix gpios on i2c-gpio for RM9200 DT
Joachim Eastwood [Tue, 4 Dec 2012 18:10:56 +0000 (18:10 +0000)]
ARM: at91: fix gpios on i2c-gpio for RM9200 DT

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91sam9x5 DTS: add SCK USART pins
Richard Genoud [Fri, 18 Jan 2013 16:42:28 +0000 (16:42 +0000)]
ARM: at91/at91sam9x5 DTS: add SCK USART pins

The SCK pins where missing in usarts pinctrl.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
Richard Genoud [Fri, 18 Jan 2013 16:41:21 +0000 (16:41 +0000)]
ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts

The PIN_BANK 3 is for PDxx pins, not PCxx pins.
And PIN_BANK 1 is for PBxx, not PIN_BANK 0.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91-pinctrl documentation: fix typo and add some details
Richard Genoud [Fri, 18 Jan 2013 16:38:43 +0000 (16:38 +0000)]
ARM: at91/at91-pinctrl documentation: fix typo and add some details

The relation between PIN_BANK numbers and pio letters wasn't made very
clear.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agofs/cifs/cifs_dfs_ref.c: fix potential memory leakage
Cong Ding [Wed, 23 Jan 2013 00:20:58 +0000 (19:20 -0500)]
fs/cifs/cifs_dfs_ref.c: fix potential memory leakage

When it goes to error through line 144, the memory allocated to *devname is
not freed, and the caller doesn't free it either in line 250. So we free the
memroy of *devname in function cifs_compose_mount_options() when it goes to
error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
CC: stable <stable@kernel.org>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
11 years agoRevert "drivers/misc/ti-st: remove gpio handling"
Luciano Coelho [Mon, 21 Jan 2013 11:12:42 +0000 (13:12 +0200)]
Revert "drivers/misc/ti-st: remove gpio handling"

This reverts commit eccf2979b2c034b516e01b8a104c3739f7ef07d1.

The reason is that it broke TI WiLink shared transport on Panda.
Also, callback functions should not be added to board files anymore,
so revert to implementing the power functions in the driver itself.

Additionally, changed a variable name ('status' to 'err') so that this
revert compiles properly.

Cc: stable <stable@vger.kernel.org> [3.7]
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoARM: kirkwood: fix missing #interrupt-cells property
Sebastian Hesselbarth [Tue, 22 Jan 2013 19:46:33 +0000 (20:46 +0100)]
ARM: kirkwood: fix missing #interrupt-cells property

The gpio controller on kirkwood can provide interrupts but is missing
the #interrupt-cells property. This patch just adds it to both gpio
controllers.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agommc: mvsdio: use devm_ API to simplify/correct error paths.
Andrew Lunn [Wed, 16 Jan 2013 13:13:56 +0000 (14:13 +0100)]
mmc: mvsdio: use devm_ API to simplify/correct error paths.

There are a number of bugs in the error paths of this driver.  Make
use of devm_ functions to simplify the cleanup on error.

Based on a patch by Russell King.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>