pandora-kernel.git
13 years agoserial8250: ratelimit "too much work" error
Daniel Drake [Wed, 20 Oct 2010 23:00:48 +0000 (16:00 -0700)]
serial8250: ratelimit "too much work" error

Running a serial console, if too many kernel messages are generated within
a short time causing a lot of serial I/O, the 8250 driver will generate
another kernel message reporting this, which just adds to the I/O. It has
a cascading effect and quickly results the system being brought to its knees
by a flood of "too much work" messages.

Ratelimit the error message to avoid this.

[akpm@linux-foundation.org: use the superior printk_ratelimited()]
[akpm@linux-foundation.org: printk_ratelimited() needs ratelimit.h]
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster
Sonic Zhang [Sat, 16 Oct 2010 22:22:34 +0000 (18:22 -0400)]
serial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster

The actual uart baud rate of devices vary between +/-2% of what is
asked.  The SPORT RX sample rate should be faster than double of the
worst case.  Otherwise, wrong data may be received.  So set SPORT RX
clock to be 3% faster in general.

Reported-by: Olivier STOCK <ostockemer@ereca.fr>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: abstraction for 8250 legacy ports
Alan Cox [Mon, 18 Oct 2010 18:38:02 +0000 (11:38 -0700)]
serial: abstraction for 8250 legacy ports

Not every platform that has generic legacy 8250 ports manages to have them
clocked the right way or without errata. Provide a generic interface to
allow platforms to override the default behaviour in a manner that dumps
the complexity in *their* code not the 8250 driver.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial/imx: check that the buffer is non-empty before sending it out
Volker Ernst [Wed, 13 Oct 2010 09:03:57 +0000 (11:03 +0200)]
serial/imx: check that the buffer is non-empty before sending it out

The .start_tx callback (imx_start_tx here) isn't only called when the
buffer is non-empty.  E.g. after resume or when handshaking is enabled
and the other side starts to signal being ready.

So check for an empty puffer already before sending the first character.
This prevents sending out stale (or uninitialised) data.

Signed-off-by: Volker Ernst <volker.ernst@txtr.com>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Andy Green <andy@warmcat.com>
[ukl: reword commit log, put check in while condition]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: mfd: add more baud rates support
Feng Tang [Thu, 14 Oct 2010 09:47:35 +0000 (17:47 +0800)]
serial: mfd: add more baud rates support

Add more baud rates support referring the baud_table[] defined
in drivers/char/tty_ioctl.c: 3000000/2000000/1000000/500000

Signed-off-by: Feng Tang <feng.tang@intel.com>
Acked-by: Alan Cox <alan.cox@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agojsm: Remove the uart port on errors
Breno Leitao [Thu, 7 Oct 2010 16:40:42 +0000 (13:40 -0300)]
jsm: Remove the uart port on errors

If kzmalloc fails, the uart port is not removed causing a leak.
This patch just add another label that removes the uart when the
kzmalloc fails.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoAlchemy: Add UART PM methods.
Manuel Lauss [Sat, 25 Sep 2010 13:13:46 +0000 (15:13 +0200)]
Alchemy: Add UART PM methods.

Custom UART PM hook for Alchemy chips:  do standard UART pm and
additionally en/disable uart block clocks as needed.
This allows to get rid of a debug port PM hack in the Alchemy pm code.

Tested on Db1200.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years ago8250: allow platforms to override PM hook.
Manuel Lauss [Sat, 25 Sep 2010 13:13:45 +0000 (15:13 +0200)]
8250: allow platforms to override PM hook.

Add a hook for platforms to specify custom pm methods.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Don't use plain integer as NULL pointer
Anton Vorontsov [Fri, 1 Oct 2010 13:23:13 +0000 (17:23 +0400)]
altera_uart: Don't use plain integer as NULL pointer

Fixes sparse warning.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
13 years agoaltera_uart: Fix missing prototype for registering an early console
Anton Vorontsov [Fri, 1 Oct 2010 13:22:55 +0000 (17:22 +0400)]
altera_uart: Fix missing prototype for registering an early console

Simply add an early_altera_uart_setup() prototype declaration, otherwise
platform code have to do it in .c files, which is ugly.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Fixup type usage of port flags
Anton Vorontsov [Fri, 1 Oct 2010 13:22:37 +0000 (17:22 +0400)]
altera_uart: Fixup type usage of port flags

port->flags is of type upf_t, which corresponds to UPF_* flags.

ASYNC_BOOT_AUTOCONF is an unsigned integer, which happen to
be the same as UPF_BOOT_AUTOCONF.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Make it possible to use Altera UART and 8250 ports together
Anton Vorontsov [Fri, 1 Oct 2010 14:23:24 +0000 (18:23 +0400)]
altera_uart: Make it possible to use Altera UART and 8250 ports together

This fixes tty name, major and minor numbers. The major number
204 is used across many platform-specific serial drivers, so we
use that.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Add support for different address strides
Anton Vorontsov [Fri, 1 Oct 2010 13:21:54 +0000 (17:21 +0400)]
altera_uart: Add support for different address strides

Some controllers implement registers with a stride, to support
those we must implement the proper IO accessors.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Add support for getting mapbase and IRQ from resources
Anton Vorontsov [Fri, 1 Oct 2010 13:21:42 +0000 (17:21 +0400)]
altera_uart: Add support for getting mapbase and IRQ from resources

This makes it much easier to integrate the driver with the rest of
the Linux (e.g. MFD subsystem).

The old method is still supported though.

Also, from now on, there is one platform device per port (no
changes are needed for the platform code, as no one registers
the devices anywhere in-tree yet).

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>,
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoaltera_uart: Add support for polling mode (IRQ-less)
Anton Vorontsov [Fri, 1 Oct 2010 13:21:33 +0000 (17:21 +0400)]
altera_uart: Add support for polling mode (IRQ-less)

Some Altera UART implementations doesn't route the IRQ line, so we have
to work in polling mode.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: Factor out uart_poll_timeout() from 8250 driver
Anton Vorontsov [Fri, 1 Oct 2010 13:21:25 +0000 (17:21 +0400)]
serial: Factor out uart_poll_timeout() from 8250 driver

Soon we will use that handy function in the altera_uart driver.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: mark the 8250 driver as maintained
Greg Kroah-Hartman [Wed, 6 Oct 2010 20:29:44 +0000 (13:29 -0700)]
serial: mark the 8250 driver as maintained

Clearly I have gone insane, so I might as well tell the world about it.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: 8250: Don't delay after transmitter is ready.
David Daney [Tue, 5 Oct 2010 18:40:07 +0000 (11:40 -0700)]
serial: 8250: Don't delay after transmitter is ready.

The loop in wait_for_xmitr() is delaying one extra uS after the ready
condition has been met.  Rewrite the loop to only delay if the
transmitter is not ready.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: MAINTAINERS: add drivers/serial/jsm/ as maintained driver
Breno Leitao [Wed, 6 Oct 2010 16:04:48 +0000 (13:04 -0300)]
tty: MAINTAINERS: add drivers/serial/jsm/ as maintained driver

Soott Kilau is handing off the maintainership of the jsm serial
driver to me, and this patch just add the driver as maintained.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agovcs: invoke the vt update callback when /dev/vcs* is written to
Nicolas Pitre [Fri, 1 Oct 2010 04:10:44 +0000 (00:10 -0400)]
vcs: invoke the vt update callback when /dev/vcs* is written to

A notifier chain is called whenever the vt code modifies a terminal
content, except for one case which is when the modification comes
through writes to /dev/vcs* devices.  Let's add the missing notifier
invocation at the end of vcs_write() for that case too.

Signed-off-by: Nicolas Pitre <nicolas.pitre@canonical.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agovcs: add poll/fasync support
Nicolas Pitre [Tue, 5 Oct 2010 18:22:37 +0000 (14:22 -0400)]
vcs: add poll/fasync support

The /dev/vcs* devices are used, amongst other things, by accessibility
applications such as BRLTTY to display the screen content onto refreshable
braille displays.  Currently this is performed by constantly reading from
/dev/vcsa0 whether or not the screen content has changed.  Given the
default braille refresh rate of 25 times per second, this easily qualifies
as the biggest source of wake-up events preventing laptops from entering
deeper power saving states.

To avoid this periodic polling, let's add support for select()/poll() and
SIGIO with the /dev/vcs* devices.  The implemented semantic is to report
data availability whenever the corresponding vt has seen some update after
the last read() operation.  The application still has to lseek() back
as usual in order to read() the new data.

Not to create unwanted overhead, the needed data structure is allocated
and the vt notification callback is registered only when the poll or
fasync method is invoked for the first time per file instance.

Signed-off-by: Nicolas Pitre <nicolas.pitre@canonical.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: Add a new file /proc/tty/consoles
Dr. Werner Fink [Wed, 22 Sep 2010 10:45:40 +0000 (12:45 +0200)]
tty: Add a new file /proc/tty/consoles

Add a new file /proc/tty/consoles to be able to determine the registered
system console lines.  If the reading process holds /dev/console open at
the regular standard input stream the active device will be marked by an
asterisk.  Show possible operations and also decode the used flags of
the listed console lines.

Signed-off-by: Werner Fink <werner@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: Fix warning left over from TIOCGICOUNT changes
Alan Cox [Fri, 24 Sep 2010 14:49:18 +0000 (15:49 +0100)]
tty: Fix warning left over from TIOCGICOUNT changes

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: icount changeover for other main devices
Alan Cox [Thu, 16 Sep 2010 17:21:52 +0000 (18:21 +0100)]
tty: icount changeover for other main devices

Again basically cut and paste

Convert the main driver set to use the hooks for GICOUNT

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: Convert the USB drivers to the new icount interface
Alan Cox [Thu, 16 Sep 2010 17:21:40 +0000 (18:21 +0100)]
tty: Convert the USB drivers to the new icount interface

Simple pasting job using the new ops function. Also fix a couple of devices
directly returning the internal struct (which happens at this point to match
for the fields that matter but isn't correct or futureproof)

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: Make tiocgicount a handler
Alan Cox [Thu, 16 Sep 2010 17:21:24 +0000 (18:21 +0100)]
tty: Make tiocgicount a handler

Dan Rosenberg noted that various drivers return the struct with uncleared
fields. Instead of spending forever trying to stomp all the drivers that
get it wrong (and every new driver) do the job in one place.

This first patch adds the needed operations and hooks them up, including
the needed USB midlayer and serial core plumbing.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: max3107: Fix memory leaks when returning on error
Davidlohr Bueso [Mon, 13 Sep 2010 16:08:11 +0000 (12:08 -0400)]
serial: max3107: Fix memory leaks when returning on error

Fix memory leaks in max3107_probe() when returning on error.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: mrst_max3110: Make the IRQ option runtime
Alan Cox [Mon, 13 Sep 2010 07:39:56 +0000 (15:39 +0800)]
serial: mrst_max3110: Make the IRQ option runtime

And while we are at it allow it to fail to find one. Without this the IRQ
option will cause the 3110 driver to fail on 0.7 SFI firmware.

Acked-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: mrst_max3110: some code cleanup
Feng Tang [Mon, 13 Sep 2010 07:39:48 +0000 (15:39 +0800)]
serial: mrst_max3110: some code cleanup

The cleanup for mrst_max3110 includes:
* remove unneeded head files
* make the spi_transfer dma safe, so that driver is more portable
* add more check for error return value
* use mutex_trylock for read thread

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty_io: check return code of tty_register_device
Vasiliy Kulikov [Sun, 5 Sep 2010 18:32:22 +0000 (22:32 +0400)]
tty_io: check return code of tty_register_device

Function tty_register_device may return ERR_PTR(...). Check for it.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoChar: mxser, call pci_disable_device from probe/remove
Jiri Slaby [Fri, 3 Sep 2010 08:31:37 +0000 (10:31 +0200)]
Char: mxser, call pci_disable_device from probe/remove

Vasiliy found that pci_disable_device is not called on fail paths in
mxser_probe. Actually, it is called from nowhere in the driver.

There are three changes needed:
1) don't use pseudo-generic mxser_release_res. Let's use it only from
   ISA paths from now on. All the pci stuff is moved to probe and
   remove PCI-related functions.
2) reorder fail-paths in the probe function so that it makes sense and
   we can call them from the sequential code naturally (the further we
   are the earlier label we go to).
3) add pci_disable_device both to mxser_probe and mxser_remove.

There is a nit of adding CONFIG_PCI ifdef to mxser_remove. it is
because this driver supports ISA-only compilations and it would choke
up on the newly added calls now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoadd ttyprintk driver
Samo Pogacnik [Wed, 25 Aug 2010 18:44:07 +0000 (20:44 +0200)]
add ttyprintk driver

Ttyprintk is a pseudo TTY driver, which allows users to make printk
messages, via output to ttyprintk device. It is possible to store
"console" messages inline with kernel messages for better analyses of
the boot process, for example.

Signed-off-by: Samo Pogacnik <samo_pogacnik@t-2.net>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial-core: restore termios settings when resume console ports
Jason Wang [Sat, 21 Aug 2010 07:14:42 +0000 (15:14 +0800)]
serial-core: restore termios settings when resume console ports

The commit 4547be7 rewrites suspend and resume functions. According
to this rewrite, when a serial port is a printk console device and
can suspend(without set no_console_suspend flag), it will definitely
call set_termios function during its resume, but parameter termios
isn't initialized, this will pass an unpredictable config to the
serial port. If this serial port is not a userspace opened tty device
, a suspend and resume action will make this serial port unusable.
I.E. ttyS0 is a printk console device, ttyS1 or keyboard+display is
userspace tty device, a suspend/resume action will make ttyS0
unusable.

If a serial port is both a printk console device and an opened tty
device, this issue can be overcome because it will call set_termios
again with the correct parameter in the uart_change_speed function.

Refer to the deleted content of commit 4547be7, revert parts relate
to restore settings into parameter termios. It is safe because if
a serial port is a printk console only device, the only meaningful
field in termios is c_cflag and its old config is saved in
uport->cons->cflag, if this port is also an opened tty device,
it will clear uport->cons->cflag in the uart_open and the old config
is saved in tty->termios.

Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Acked-by: Stanislav Brabec <sbrabec@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial-core: skip call set_termios/console_start when no_console_suspend
Jason Wang [Sat, 21 Aug 2010 07:14:41 +0000 (15:14 +0800)]
serial-core: skip call set_termios/console_start when no_console_suspend

The commit 4547be7 rewrites suspend and resume functions, this
introduces a problem on the OMAP3EVM platoform. when the kernel boots
with no_console_suspend and we suspend the kernel, then resume it,
the serial console will be not usable. This problem should be common
for all platforms.
The cause for this problem is that when enter suspend, if we choose
no_console_suspend, the console_stop will be skiped. But in resume
function, the console port will be set to uninitialized state by
calling set_termios function and the console_start is called without
checking whether the no_console_suspend is set, Now fix it.

Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Acked-by: Stanislav Brabec <sbrabec@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on s390 (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:11 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on s390 (enables termiox)

This patch converts s390 to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- S390 defines its own value for FIOQSIZE, asm-generic/ioctls.h keeps it
- The generic version adds TIOCGRS485 and TIOCGRS485, which are unused
  by any driver available on this architecture
- The generic version adds support for termiox

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on mn10300 (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:10 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on mn10300 (enables termiox)

This patch converts mn10300 to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- The generic version provides TIOCGRS485 and TIOCSRS485 but they
  are unused by any driver available for this architecture.
- The generic version adds support for termiox

Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on m68k (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:09 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on m68k (enables termiox)

This patch converts m68k to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- m68k defines its own value for FIOQSIZE, asm-generic/ioctls.h keeps it
- The generic version adds TIOCSRS485 and TIOCGRS485m which are unused
  by any driver available on this architecture.
- The generic version adds support for termiox

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on m32r (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:08 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on m32r (enables termiox)

This patch converts m32r to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- The generic version adds TIOCGRS485 and TIOCGRS485, which are unused by
  any driver available on this architecture.
- The generic version adds support for termiox

Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on ia64 (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:07 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on ia64 (enables termiox)

This patch converts ia64 to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- The generic version adds TIOCSRS485 and TIOCGRS485, which are unused
  by any driver available on this architecture.
- The generic version adds support for termiox

Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on h8300 (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:06 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on h8300 (enables termiox)

This patch converts h8300 to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- H8300 defines its own value for FIOQSIZE, asm-generic/ioctls.h keeps it
- The generic version adds TIOCSRS485 and TIOGSRS485, but are unused
  by any driver available on this architecture.
- The generic version adds support for termiox

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on frv (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:05 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on frv (enables termiox)

This patch converts frv to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- FRV defines its own value for FIOQSIZE, asm-generic/ioctls.h keeps it
- FRV defines TIOCTTYGSTRUCT, kept in arch-specific version
- The generic version provides TIOCGRS485 and TIOCSRS485 but they
  are unused by any driver available for this architecture.
- The generic version adds support for termiox

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on cris (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:04 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on cris (enables termiox)

This patch converts cris to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- CRIS defines two ioctls: TIOCSERSETRS485 and TIOCSERWRRS485,
  kept in arch-specific portion
- CRIS defines a different value for TIOCSRS485, kept via ifndef in generic
- The generic version adds support for termiox

Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on avr32 (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:03 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on avr32 (enables termiox)

This patch converts avr32 to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- The generic version adds support for termiox

Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoioctl: Use asm-generic/ioctls.h on arm (enables termiox)
Jeff Mahoney [Fri, 20 Aug 2010 21:14:02 +0000 (17:14 -0400)]
ioctl: Use asm-generic/ioctls.h on arm (enables termiox)

This patch converts arm to use asm-generic/ioctls.h instead of its
own version.

The differences between the arch-specific version and the generic
version are as follows:

- ARM defines its own value for FIOQSIZE, asm-generic/ioctls.h keeps it
- The generic version adds support for termiox

Reviewed-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: Remove __GFP_NOFAIL from tty_add_file()
Pekka Enberg [Tue, 24 Aug 2010 04:48:34 +0000 (07:48 +0300)]
tty: Remove __GFP_NOFAIL from tty_add_file()

This patch removes __GFP_NOFAIL use from tty_add_file() and adds proper error
handling to the call-sites of the function.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: Add CONSOLE_POLL support for uartlite
Michal Simek [Tue, 17 Aug 2010 08:42:05 +0000 (10:42 +0200)]
serial: Add CONSOLE_POLL support for uartlite

CONSOLE_POLL support for uartlite enables
KGDB debugging over serial line.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserial: mfd: snprintf() returns largish values
Dan Carpenter [Thu, 12 Aug 2010 07:50:09 +0000 (09:50 +0200)]
serial: mfd: snprintf() returns largish values

snprintf() returns the number of bytes which would have been written so
it can be larger than the size of the buffer.  In this case it's fine,
but people copy and paste this code so I've fixed it.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoserport: place serport serio device correctly in the device tree
Dmitry Eremin-Solenikov [Mon, 9 Aug 2010 14:22:50 +0000 (18:22 +0400)]
serport: place serport serio device correctly in the device tree

Make serport serio device to be a child of corresponding tty device
instead of just hanging at /sys/devices/serioX.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agotty: add tty_struct->dev pointer to corresponding device instance
Dmitry Eremin-Solenikov [Mon, 9 Aug 2010 14:22:49 +0000 (18:22 +0400)]
tty: add tty_struct->dev pointer to corresponding device instance

Some device drivers (mostly tty line disciplines) would like to have way
know a struct device instance corresponding to passed tty_struct. Add
a struct device pointer to struct tty_struct and populate it during
initialize_tty_struct().

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoLinux 2.6.36 v2.6.36
Linus Torvalds [Wed, 20 Oct 2010 20:30:22 +0000 (13:30 -0700)]
Linux 2.6.36

13 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Wed, 20 Oct 2010 20:18:21 +0000 (13:18 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus

* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus:
  MIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls.
  MAINTAINERS: Change list for ioc_serial to linux-serial.
  SERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure
  MIPS: jz4740: Fix Kbuild Platform file.
  MIPS: Repair Kbuild make clean breakage.

13 years agovirtio: console: Don't block entire guest if host doesn't read data
Amit Shah [Wed, 20 Oct 2010 03:15:43 +0000 (13:45 +1030)]
virtio: console: Don't block entire guest if host doesn't read data

If the host is slow in reading data or doesn't read data at all,
blocking write calls not only blocked the program that called write()
but the entire guest itself.

To overcome this, let's not block till the host signals it has given
back the virtio ring element we passed it.  Instead, send the buffer to
the host and return to userspace.  This operation then becomes similar
to how non-blocking writes work, so let's use the existing code for this
path as well.

This code change also ensures blocking write calls do get blocked if
there's not enough room in the virtio ring as well as they don't return
-EAGAIN to userspace.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
CC: stable@kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Wed, 20 Oct 2010 20:13:09 +0000 (13:13 -0700)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] bsg: fix incorrect device_status value
  [SCSI] Fix VPD inquiry page wrapper

13 years agoMerge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 20 Oct 2010 16:00:44 +0000 (09:00 -0700)]
Merge branch 'kvm-updates/2.6.36' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Fix fs/gs reload oops with invalid ldt

13 years agoMIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls.
Michel Thebeau [Tue, 28 Sep 2010 18:15:37 +0000 (14:15 -0400)]
MIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls.

[Ralf: Michel's original patch only fixed N32; I replicated the same fix
for O32.]

Signed-off-by: Michel Thebeau <michel.thebeau@windriver.com>
Cc: paul.gortmaker@windriver.com
Cc: bruce.ashfield@windriver.com
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMAINTAINERS: Change list for ioc_serial to linux-serial.
Ralf Baechle [Tue, 19 Oct 2010 17:32:41 +0000 (18:32 +0100)]
MAINTAINERS: Change list for ioc_serial to linux-serial.

IOC3 is also being used on SGI MIPS systems but this particular driver is
only being used on IA64 systems so linux-mips made no sense as a list.  Pat
also thinks linux-serial@vger.kernel.org is the better list.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoSERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure
Julia Lawall [Fri, 15 Oct 2010 13:00:09 +0000 (15:00 +0200)]
SERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure

In this code, 0 is returned on memory allocation failure, even though other
failures return -ENOMEM or other similar values.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression ret;
expression x,e1,e2,e3;
@@

ret = 0
... when != ret = e1
*x = \(kmalloc\|kcalloc\|kzalloc\)(...)
... when != ret = e2
if (x == NULL) { ... when != ret = e3
  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
To: Pat Gefre <pfg@sgi.com>
Cc: kernel-janitors@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1704/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: jz4740: Fix Kbuild Platform file.
David Daney [Tue, 19 Oct 2010 01:05:49 +0000 (18:05 -0700)]
MIPS: jz4740: Fix Kbuild Platform file.

The platform specific files should be included via the platform-y
variable.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Patchwork: https://patchwork.linux-mips.org/patch/1719/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: Repair Kbuild make clean breakage.
David Daney [Tue, 19 Oct 2010 00:51:26 +0000 (17:51 -0700)]
MIPS: Repair Kbuild make clean breakage.

When running make clean, Kbuild doesn't process the .config file, so nothing
generates a platform-y variable.  We can get it to descend into the platform
directories by setting $(obj-).

The dec Platform file was unconditionally setting platform-, obliterating
its previous contents and preventing some directories from being cleaned.
This is change to an append operation '+=' to allow cavium-octeon to be
cleaned.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Patchwork: https://patchwork.linux-mips.org/patch/1718/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Tue, 19 Oct 2010 17:10:20 +0000 (10:10 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: avivo cursor workaround applies to evergreen as well

13 years agoKVM: Fix fs/gs reload oops with invalid ldt
Avi Kivity [Tue, 19 Oct 2010 14:46:55 +0000 (16:46 +0200)]
KVM: Fix fs/gs reload oops with invalid ldt

kvm reloads the host's fs and gs blindly, however the underlying segment
descriptors may be invalid due to the user modifying the ldt after loading
them.

Fix by using the safe accessors (loadsegment() and load_gs_index()) instead
of home grown unsafe versions.

This is CVE-2010-3698.

KVM-Stable-Tag.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
13 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Mon, 18 Oct 2010 20:10:36 +0000 (13:10 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus

* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Enable ISA_DMA_API config to fix build failure
  MIPS: 32-bit: Fix build failure in asm/fcntl.h
  MIPS: Remove all generated vmlinuz* files on "make clean"
  MIPS: do_sigaltstack() expects userland pointers
  MIPS: Fix error values in case of bad_stack
  MIPS: Sanitize restart logics
  MIPS: secure_computing, syscall audit: syscall number should in r2, not r0.
  MIPS: Don't block signals if we'd failed to setup a sigframe

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Mon, 18 Oct 2010 20:10:08 +0000 (13:10 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: evdev - fix EVIOCSABS regression
  Input: evdev - fix Ooops in EVIOCGABS/EVIOCSABS

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Mon, 18 Oct 2010 20:09:26 +0000 (13:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: ohci: fix TI TSB82AA2 regression since 2.6.35

13 years agomxc_nand: do not depend on disabling the irq in the interrupt handler
Sascha Hauer [Mon, 18 Oct 2010 08:16:26 +0000 (10:16 +0200)]
mxc_nand: do not depend on disabling the irq in the interrupt handler

This patch reverts the driver to enabling/disabling the NFC interrupt
mask rather than enabling/disabling the system interrupt.  This cleans
up the driver so that it doesn't rely on interrupts being disabled
within the interrupt handler.

For i.MX21 we keep the current behaviour, that is calling
enable_irq/disable_irq_nosync to enable/disable interrupts.  This patch
is based on earlier work by John Ogness.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: John Ogness <john.ogness@linutronix.de>
Tested-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus/i2c/2636-rc8' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Mon, 18 Oct 2010 20:05:10 +0000 (13:05 -0700)]
Merge branch 'for-linus/i2c/2636-rc8' of git://git.fluff.org/bjdooks/linux

* 'for-linus/i2c/2636-rc8' of git://git.fluff.org/bjdooks/linux:
  i2c-imx: do not allow interruptions when waiting for I2C to complete
  i2c-davinci: Fix TX setup for more SoCs

13 years agoMerge branch 'fixes'
Linus Torvalds [Mon, 18 Oct 2010 20:04:33 +0000 (13:04 -0700)]
Merge branch 'fixes'

* fixes:
  v4l1: fix 32-bit compat microcode loading translation
  De-pessimize rds_page_copy_user

13 years agoMIPS: Enable ISA_DMA_API config to fix build failure
Namhyung Kim [Mon, 18 Oct 2010 03:55:21 +0000 (12:55 +0900)]
MIPS: Enable ISA_DMA_API config to fix build failure

Add ISA_DMA_API config item and select it when GENERIC_ISA_DMA enabled.
This fixes build failure on allmodconfig like following:

  CC      sound/isa/es18xx.o
sound/isa/es18xx.c: In function 'snd_es18xx_playback1_prepare':
sound/isa/es18xx.c:501:9: error: implicit declaration of function 'snd_dma_program'
sound/isa/es18xx.c: In function 'snd_es18xx_playback_pointer':
sound/isa/es18xx.c:818:3: error: implicit declaration of function 'snd_dma_pointer'
make[3]: *** [sound/isa/es18xx.o] Error 1
make[2]: *** [sound/isa/es18xx.o] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1717/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: 32-bit: Fix build failure in asm/fcntl.h
Namhyung Kim [Sun, 17 Oct 2010 16:41:39 +0000 (01:41 +0900)]
MIPS: 32-bit: Fix build failure in asm/fcntl.h

  CC      security/integrity/ima/ima_fs.o
In file included from linux/include/linux/fcntl.h:4:0,
                 from linux/security/integrity/ima/ima_fs.c:18:
linux/arch/mips/include/asm/fcntl.h:63:2: error: expected specifier-qualifier-list before 'off_t'
make[3]: *** [security/integrity/ima/ima_fs.o] Error 1
make[2]: *** [security/integrity/ima/ima_fs.o] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1715/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: Remove all generated vmlinuz* files on "make clean"
Wu Zhangjin [Wed, 22 Sep 2010 06:03:57 +0000 (14:03 +0800)]
MIPS: Remove all generated vmlinuz* files on "make clean"

[Ralf: I changed the patch to explicitly list all files to be deleted out
of paranoia.]

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1590/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: do_sigaltstack() expects userland pointers
Al Viro [Tue, 28 Sep 2010 17:50:57 +0000 (18:50 +0100)]
MIPS: do_sigaltstack() expects userland pointers

o32 compat does the right thing, native and n32 compat do not...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1700/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: Fix error values in case of bad_stack
Al Viro [Tue, 28 Sep 2010 17:50:47 +0000 (18:50 +0100)]
MIPS: Fix error values in case of bad_stack

We want EFAULT, not -<syscall number>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1699/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: Sanitize restart logics
Al Viro [Tue, 28 Sep 2010 17:50:37 +0000 (18:50 +0100)]
MIPS: Sanitize restart logics

Put the original syscall number into ->regs[0] when we leave syscall
with error.  Use it in restart logics.  Everything else will have
it 0 since we pass through SAVE_SOME on all the ways in.  Note that
in places like bad_stack and inllegal_syscall we leave it 0 - it's not
restartable.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1698/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: secure_computing, syscall audit: syscall number should in r2, not r0.
Al Viro [Tue, 28 Sep 2010 17:50:27 +0000 (18:50 +0100)]
MIPS: secure_computing, syscall audit: syscall number should in r2, not r0.

As it is, audit_syscall_entry() and secure_computing() get the
bogus value (0, in fact)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1697/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoMIPS: Don't block signals if we'd failed to setup a sigframe
Al Viro [Tue, 28 Sep 2010 17:50:17 +0000 (18:50 +0100)]
MIPS: Don't block signals if we'd failed to setup a sigframe

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1696/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
13 years agoInput: evdev - fix EVIOCSABS regression
Daniel Mack [Mon, 18 Oct 2010 15:43:50 +0000 (08:43 -0700)]
Input: evdev - fix EVIOCSABS regression

448cd16 ("Input: evdev - rearrange ioctl handling") broke EVIOCSABS by
checking for the wrong direction bit.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Tested-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
13 years agoInput: evdev - fix Ooops in EVIOCGABS/EVIOCSABS
Daniel Mack [Mon, 18 Oct 2010 15:43:30 +0000 (08:43 -0700)]
Input: evdev - fix Ooops in EVIOCGABS/EVIOCSABS

This fixes a regression introduced by the dynamic allocation of absinfo
for input devices. We need to bail out early for input devices which
don't have absolute axis.

[  929.664303] Pid: 2989, comm: input Not tainted 2.6.36-rc8+ #14 MS-7260/MS-7260
[  929.664318] EIP: 0060:[<c12bdc01>] EFLAGS: 00010246 CPU: 0
[  929.664331] EIP is at evdev_ioctl+0x4f8/0x59f
[  929.664341] EAX: 00000040 EBX: 00000000 ECX: 00000006 EDX: f45a1efc
[  929.664355] ESI: 00000000 EDI: f45a1efc EBP: f45a1f24 ESP: f45a1eb8
[  929.664369]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  929.664402]  f470da74 f6a30e78 f462c240 00000018 bfe4a260 00000000 f45b06fc 00000000
[  929.664429] <0> 000000c4 b769d000 c3544620 f470da74 f45b06fc f45b06fc f45a1f38 c107dd1f
[  929.664458] <0> f4710b74 000000c4 00000000 00000000 00000000 0000029d 00000a74 f4710b74
[  929.664500]  [<c107dd1f>] ? handle_mm_fault+0x2be/0x59a
[  929.664513]  [<c12bd709>] ? evdev_ioctl+0x0/0x59f
[  929.664524]  [<c1099d30>] ? do_vfs_ioctl+0x494/0x4d9
[  929.664538]  [<c10432a1>] ? up_read+0x16/0x29
[  929.664550]  [<c101c818>] ? do_page_fault+0x2ff/0x32d
[  929.664564]  [<c108d048>] ? do_sys_open+0xc5/0xcf
[  929.664575]  [<c1099db6>] ? sys_ioctl+0x41/0x61
[  929.664587]  [<c1002710>] ? sysenter_do_call+0x12/0x36
[  929.684570] ---[ end trace 11b83e923bd8f2bb ]---

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
13 years agoi2c-imx: do not allow interruptions when waiting for I2C to complete
Marc Kleine-Budde [Mon, 21 Jun 2010 07:27:05 +0000 (09:27 +0200)]
i2c-imx: do not allow interruptions when waiting for I2C to complete

The i2c_imx_trx_complete() function is using
wait_event_interruptible_timeout() to wait for the I2C controller to
signal that it has completed an I2C bus operation. If the process that
causes the I2C operation receives a signal, the wait will be
interrupted, returning an error. It is better to let the I2C operation
finished before handling the signal (i.e. returning into userspace).

It is safe to use wait_event_timeout() instead, because the timeout
will allow the process to exit if the I2C bus hangs. It's also better
to allow the I2C operation to finish, because unacknowledged I2C
operations can cause the I2C bus to hang.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
13 years agoi2c-davinci: Fix TX setup for more SoCs
Jon Povey [Tue, 12 Oct 2010 04:47:05 +0000 (13:47 +0900)]
i2c-davinci: Fix TX setup for more SoCs

This patch is an improvement to 4bba0fd8d1c6d405df666e2573e1a1f917098be0
which got to mainline a little early.

Sudhakar Rajashekhara explains that at least OMAP-L138 requires MDR mode
settings before DXR for correct behaviour, so load MDR first with
STT cleared and later load again with STT set.

Tested on DM355 connected to Techwell TW2836 and Wolfson WM8985

Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Acked-by: Troy Kisky <troy.kisky@boundarydevices.com>
Tested-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
13 years agodrm/radeon/kms: avivo cursor workaround applies to evergreen as well
Alex Deucher [Thu, 14 Oct 2010 21:14:57 +0000 (17:14 -0400)]
drm/radeon/kms: avivo cursor workaround applies to evergreen as well

Fixes cursor corruption in certain cases.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agoMerge branch 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 17 Oct 2010 16:38:08 +0000 (09:38 -0700)]
Merge branch 'fix/misc' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: rawmidi: fix oops (use after free) when unloading a driver module

13 years agofirewire: ohci: fix TI TSB82AA2 regression since 2.6.35
Stefan Richter [Sun, 17 Oct 2010 12:09:12 +0000 (14:09 +0200)]
firewire: ohci: fix TI TSB82AA2 regression since 2.6.35

Revert commit 54672386ccf36ffa21d1de8e75624af83f9b0eeb
"firewire: ohci: fix up configuration of TI chips".
It caused massive slow-down and data corruption with a TSB82AA2 based
StarTech EC1394B2 ExpressCard and FireWire 800 harddisks.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/657081
http://thread.gmane.org/gmane.linux.kernel.firewire.user/4013

The fact that some card EEPROMs do not program these enhancements may be
related to TSB81BA3 phy chip errata, if not to bugs of TSB82AA2 itself.
We could re-add these configuration steps, but only conditional on a
whitelist of cards on which these enhancements bring a proven positive
effect.

Reported-and-tested-by: Eric Shattow <lucent@gmail.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org> 2.6.35
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
13 years agoALSA: rawmidi: fix oops (use after free) when unloading a driver module
Clemens Ladisch [Fri, 15 Oct 2010 10:06:18 +0000 (12:06 +0200)]
ALSA: rawmidi: fix oops (use after free) when unloading a driver module

When a driver module is unloaded and the last still open file is a raw
MIDI device, the card and its devices will be actually freed in the
snd_card_file_remove() call when that file is closed.  Afterwards, rmidi
and rmidi->card point into freed memory, so the module pointer is likely
to be garbage.
(This was introduced by commit 9a1b64caac82aa02cb74587ffc798e6f42c6170a.)

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-by: Krzysztof Foltman <wdev@foltman.com>
Cc: 2.6.30-2.6.35 <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agom32r: test __LITTLE_ENDIAN__ instead of __LITTLE_ENDIAN
Kyle McMartin [Sat, 16 Oct 2010 01:17:16 +0000 (21:17 -0400)]
m32r: test __LITTLE_ENDIAN__ instead of __LITTLE_ENDIAN

Fixes build for me... these are what's tested in byteorder.h...

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agom32r: add kernel/.gitignore and ignore vmlinux.lds
Kyle McMartin [Sat, 16 Oct 2010 01:17:13 +0000 (21:17 -0400)]
m32r: add kernel/.gitignore and ignore vmlinux.lds

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agom32r: get_user takes an lvalue, not a pointer
Kyle McMartin [Sat, 16 Oct 2010 01:17:09 +0000 (21:17 -0400)]
m32r: get_user takes an lvalue, not a pointer

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Acked-by: Al "my fuckup" Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agom32r: restore _BLOCKABLE
Kyle McMartin [Sat, 16 Oct 2010 01:16:45 +0000 (21:16 -0400)]
m32r: restore _BLOCKABLE

Commit a7f8388e accidentally removed it... Al explains:

  "Sorry, reordering breakage.  In the signals tree here I have

   static inline void sig_set_blocked(struct sigset_t *set)
   ...

   and it's used all over the place (including quite a few places where
   we currently have sigprocmask(SIG_SETMASK, set, NULL), which is what
   it's equivalent to).  With that done, m32r doesn't use _BLOCKABLE
   anywhere, so it got removed.  And that chunk got picked when I'd been
   reordering the queue to pull the arch-specific fixes in front.
   Sorry."

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agotypes.h: define __aligned_u64 and expose to userspace
Eric Paris [Fri, 15 Oct 2010 21:34:14 +0000 (14:34 -0700)]
types.h: define __aligned_u64 and expose to userspace

We currently have a kernel internal type called aligned_u64 which aligns
__u64's on 8 bytes boundaries even on systems which would normally align
them on 4 byte boundaries.  This patch creates a new type __aligned_u64
which does the same thing but which is exposed to userspace rather than
being kernel internal.

[akpm: merge early as both the net and audit trees want this]

[akpm@linux-foundation.org: enhance the comment describing the reasons for using aligned_u64.  Via Andreas and Andi.]
Based-on-patch-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: Jan Engelhardt <jengelh@medozas.de>
Cc: David Miller <davem@davemloft.net>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agouml: fix build
FUJITA Tomonori [Fri, 15 Oct 2010 21:34:13 +0000 (14:34 -0700)]
uml: fix build

Fix a build error introduced by d6d1b650ae6acce73d55dd024 ("param: simple
locking for sysfs-writable charp parameters").

    CC      arch/um/kernel/trap.o
  arch/um/drivers/hostaudio_kern.c: In function 'hostaudio_open':
  arch/um/drivers/hostaudio_kern.c:204: error: '__param_dsp' undeclared (first use in this function)
  arch/um/drivers/hostaudio_kern.c:204: error: (Each undeclared identifier is reported only once
  arch/um/drivers/hostaudio_kern.c:204: error: for each function it appears in.)
  arch/um/drivers/hostaudio_kern.c: In function 'hostmixer_open_mixdev':
  arch/um/drivers/hostaudio_kern.c:265: error: '__param_mixer' undeclared (first use in this function)
  arch/um/drivers/hostaudio_kern.c:272: error: '__param_dsp' undeclared (first use in this function)

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Tested-by: Toralf Förster <toralf.foerster@gmx.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agosysctl: min/max bounds are optional
Eric Dumazet [Fri, 15 Oct 2010 21:34:12 +0000 (14:34 -0700)]
sysctl: min/max bounds are optional

sysctl check complains with a WARN() when proc_doulongvec_minmax() or
proc_doulongvec_ms_jiffies_minmax() are used by a vector of longs (with
more than one element), with no min or max value specified.

This is unexpected, given we had a bug on this min/max handling :)

Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Miller <davem@davemloft.net>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agov4l1: fix 32-bit compat microcode loading translation
Linus Torvalds [Fri, 15 Oct 2010 18:12:38 +0000 (11:12 -0700)]
v4l1: fix 32-bit compat microcode loading translation

The compat code for the VIDIOCSMICROCODE ioctl is totally buggered.
It's only used by the VIDEO_STRADIS driver, and that one is scheduled to
staging and eventually removed unless somebody steps up to maintain it
(at which point it should use request_firmware() rather than some magic
ioctl).  So we'll get rid of it eventually.

But in the meantime, the compatibility ioctl code is broken, and this
tries to get it to at least limp along (even if Mauro suggested just
deleting it entirely, which may be the right thing to do - I don't think
the compatibility translation code has ever worked unless you were very
lucky).

Reported-by: Kees Cook <kees.cook@canonical.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoDe-pessimize rds_page_copy_user
Linus Torvalds [Fri, 15 Oct 2010 18:09:28 +0000 (11:09 -0700)]
De-pessimize rds_page_copy_user

Don't try to "optimize" rds_page_copy_user() by using kmap_atomic() and
the unsafe atomic user mode accessor functions.  It's actually slower
than the straightforward code on any reasonable modern CPU.

Back when the code was written (although probably not by the time it was
actually merged, though), 32-bit x86 may have been the dominant
architecture.  And there kmap_atomic() can be a lot faster than kmap()
(unless you have very good locality, in which case the virtual address
caching by kmap() can overcome all the downsides).

But these days, x86-64 may not be more populous, but it's getting there
(and if you care about performance, it's definitely already there -
you'd have upgraded your CPU's already in the last few years).  And on
x86-64, the non-kmap_atomic() version is faster, simply because the code
is simpler and doesn't have the "re-try page fault" case.

People with old hardware are not likely to care about RDS anyway, and
the optimization for the 32-bit case is simply buggy, since it doesn't
verify the user addresses properly.

Reported-by: Dan Rosenberg <drosenberg@vsecurity.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Linus Torvalds [Fri, 15 Oct 2010 17:18:36 +0000 (10:18 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/cjb/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
  mmc: sdio: fix SDIO suspend/resume regression

13 years agommc: sdio: fix SDIO suspend/resume regression
Ohad Ben-Cohen [Wed, 13 Oct 2010 07:31:56 +0000 (09:31 +0200)]
mmc: sdio: fix SDIO suspend/resume regression

Fix SDIO suspend/resume regression introduced by 4c2ef25fe0b "mmc: fix
all hangs related to mmc/sd card insert/removal during suspend/resume":

  PM: Syncing filesystems ... done.
  Freezing user space processes ... (elapsed 0.01 seconds) done.
  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
  Suspending console(s) (use no_console_suspend to debug)
  pm_op(): platform_pm_suspend+0x0/0x5c returns -38
  PM: Device pxa2xx-mci.0 failed to suspend: error -38
  PM: Some devices failed to suspend

4c2ef25fe0b moved the card removal/insertion mechanism out of MMC's
suspend/resume path and into pm notifiers (mmc_pm_notify), and that
broke SDIO's expectation that mmc_suspend_host() will remove the card,
and squash the error, in case -ENOSYS is returned from the bus suspend
handler (mmc_sdio_suspend() in this case).

mmc_sdio_suspend() is using this whenever at least one of the card's SDIO
function drivers does not have suspend/resume handlers - in that case
it is agreed to force removal of the entire card.

This patch fixes this regression by trivially bringing back that part of
mmc_suspend_host(), which was removed by 4c2ef25fe0b.

Reported-and-tested-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: <stable@kernel.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
13 years agoMerge branch 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Oct 2010 16:50:03 +0000 (09:50 -0700)]
Merge branch 'timers-for-linus-urgent' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  hrtimer: Preserve timer state in remove_hrtimer()

13 years agoMerge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Fri, 15 Oct 2010 16:49:43 +0000 (09:49 -0700)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/jikos/hid

* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Add Cando touch screen 15.6-inch product id
  HID: Add MULTI_INPUT quirk for turbox/mosart touchscreen
  HID: hidraw, fix a NULL pointer dereference in hidraw_write
  HID: hidraw, fix a NULL pointer dereference in hidraw_ioctl

13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 15 Oct 2010 16:49:16 +0000 (09:49 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  ubd: fix incorrect sector handling during request restart
  ps3disk: passing wrong variable to bvec_kunmap_irq()

13 years ago[SCSI] bsg: fix incorrect device_status value
FUJITA Tomonori [Thu, 16 Sep 2010 15:46:42 +0000 (00:46 +0900)]
[SCSI] bsg: fix incorrect device_status value

bsg incorrectly returns sg's masked_status value for device_status.

[jejb: fix up expression logic]
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
13 years agoubd: fix incorrect sector handling during request restart
Tejun Heo [Fri, 15 Oct 2010 10:56:21 +0000 (12:56 +0200)]
ubd: fix incorrect sector handling during request restart

Commit f81f2f7c (ubd: drop unnecessary rq->sector manipulation)
dropped request->sector manipulation in preparation for global request
handling cleanup; unfortunately, it incorrectly assumed that the
updated sector wasn't being used.

ubd tries to issue as many requests as possible to io_thread.  When
issuing fails due to memory pressure or other reasons, the device is
put on the restart list and issuing stops.  On IO completion, devices
on the restart list are scanned and IO issuing is restarted.

ubd issues IOs sg-by-sg and issuing can be stopped in the middle of a
request, so each device on the restart queue needs to remember where
to restart in its current request.  ubd needs to keep track of the
issue position itself because,

* blk_rq_pos(req) is now updated by the block layer to keep track of
  _completion_ position.

* Multiple io_req's for the current request may be in flight, so it's
  difficult to tell where blk_rq_pos(req) currently is.

Add ubd->rq_pos to keep track of the issue position and use it to
correctly restart io_req issue.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Tested-by: Chris Frey <cdfrey@foursquare.net>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
13 years agoExport dump_{write,seek} to binary loader modules
Linus Torvalds [Fri, 15 Oct 2010 02:15:28 +0000 (19:15 -0700)]
Export dump_{write,seek} to binary loader modules

If you build aout support as a module, you'll want these exported.

Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>