Add a simple log_status function for raw analog video capture device nodes,
to provide insight into the state of the CX2388[578] A/V decoder core.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The offset in the eeprom data for the 79501 version of the HVR-1250 is at 0xc0
vs. the standard 0x80.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
There was a small window between writing the cx25840 register
address over the i2c bus and reading the register contents back from the
cx25840 device that the i2c adapter lock was released. This change ensures the
adapter lock is not released until the register read is done.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Function i2c_wait_done() never returns negative values, so there is no
point in checking for them.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Don't just check for nacks on zero-length transactions. Check on
other transactions too.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Documentation/i2c/fault-codes says that i2c adapter drivers should
return -ENXIO when no slave acks an address byte.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
On laptops, the webcam sometimes disconnects when writing the first main
register (b300). This patch prevents the creation of a new /dev/video<n>
on streaming start.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The added controls are exposure, gain, autogain and backlight compensation.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The JPEG format did not work fine. The Bayer format offers correct VGA (640x480)
resolution, but bad QQVGA (160x120). This last resolution is removed.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The bit 7 of the sensor gain register multiplies the 7bits value by two.
It is now always set with half the user gain value.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The start_1 exchange must be done by (reg, val) * 5 and not 8.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The sensor enum definition was not at the right place.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
All callers expect a boolean result which is true if the region
overlaps a reserved region. However, the implementation actually
returns -1 if there is no overlap, and a region index (0 based)
if there is.
Make it behave as callers (and common sense) expect.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Handling of autofs ioctl numbers does not need to be generic
and can easily be done directly in autofs itself.
This also pushes the BKL into autofs and autofs4 ioctl
methods.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ian Kent <raven@themaw.net>
Cc: Autofs <autofs@linux.kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
v4l2 implements two separate file operations for drivers that
use locked and unlocked ioctl callbacks. Since we want to remove
the ioctl file operation in favor of the unlocked variant, this
separation no longer seems helpful.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: John Kacur <jkacur@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Add a new watchdog driver for the Fintek F71808E and F71882FG Super I/O
controllers.
Signed-off-by: Giel van Schijndel <me@mortis.eu>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Set the paranet of the misc_device before we register the misc_device.
Reported-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Wim Van sebroeck <wim@iguana.be>
Move the VENDOR/DEVICE ids to pci_ids.h.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
When removing the watchdog platform device, we need to
disable the access to userspace first. It makes no sense
to remove the drivers clock, irq's, ... and then disable
userspace access.
the order of removal has also been changed so that it
is the reverse of probing (this way the clock is also
disabled sooner).
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
arch/tile: check kmalloc() result
arch/tile: catch up on various minor cleanups.
arch/tile: avoid erroneous error return for PTRACE_POKEUSR.
tile: set ARCH_KMALLOC_MINALIGN
tile: remove homegrown L1_CACHE_ALIGN macro
arch/tile: Miscellaneous cleanup changes.
arch/tile: Split the icache flush code off to a generic <arch> header.
arch/tile: Fix bug in support for atomic64_xx() ops.
arch/tile: Shrink the tile-opcode files considerably.
arch/tile: Add driver to enable access to the user dynamic network.
arch/tile: Enable more sophisticated IRQ model for 32-bit chips.
Move list types from <linux/list.h> to <linux/types.h>.
Add wait4() back to the set of <asm-generic/unistd.h> syscalls.
Revert adding some arch-specific signal syscalls to <linux/syscalls.h>.
arch/tile: Do not use GFP_KERNEL for dma_alloc_coherent(). Feedback from fujita.tomonori@lab.ntt.co.jp.
arch/tile: core support for Tilera 32-bit chips.
Fix up the "generic" unistd.h ABI to be more useful.
* 'for-linus' of git://www.jni.nu/cris: (51 commits)
CRIS: Fix alignment problem for older ld
CRIS: Always dump registers for segfaulting process.
CRIS: Add config for pausing a seg-faulting process
CRIS: Don't take faults while in_atomic
CRIS: Fixup lookup for delay slot faults
CRIS: Discard exit.text and .data at runtime
CRIS: Add cache aligned and read mostly data sections
CRIS: Return something from profile write
CRIS: Add ARTPEC-3 and timestamps for sync-serial
CRIS: Better ARTPEC-3 support for gpio
CRIS: Add include guard
CRIS: Better handling of pinmux settings
CRIS: New DMA defines for ARTPEC-3
CRIS: __do_strncpy_from_user: Don't read the byte beyond the nil
CRIS: Pagetable for ARTPEC-3
CRIS: Machine dependent memmap.h
CRIS: Check if pointer is set before using it
CRIS: Machine dependent dma.h
CRIS: Define __read_mostly for CRISv32
CRIS: Discard .note.gnu.build-id section
...
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci:
davinci: dm646x EVM: Specify reserved EDMA channel/slots
davinci: da8xx/omapl EVM: Specify reserved channels/slots
davinci: support for EDMA resource sharing
davinci: edma: provide ability to detect insufficient CC info data
davinci: da8xx: sparse cleanup: remove duplicate entries in irq priorities
davinci: DM365: fixed second serial port
Davinci: tnetv107x evm board initial support
Davinci: tnetv107x initial gpio support
Davinci: tnetv107x soc support
Davinci: tnetv107x decompresser uart definitions
Davinci: generalized debug macros
- If function called without barrier option retvalue is incorrect
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Propagate REQ_DISCARD in cmd_flags when cloning a discard request.
Skip blk_rq_check_limits's existing checks for discard requests because
discard limits will have already been checked in blkdev_issue_discard.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
quiet the warning:
fs/omfs/file.c: In function 'omfs_get_block':
fs/omfs/file.c:225: warning: 'new_block' may be used uninitialized in
this function
new_block is used properly by the call to omfs_grow_extent()
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
works in schecule_on_each_cpu() is a percpu pointer but was missing
__percpu markup. Add it.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
There are three reasons to add this support:
1. users probably know the interface type of their flashs, then probe
can be faster if they give the right type in platform data since wrong
types will not be detected.
2. sometimes, detecting can cause destory to system. For example, for
kernel XIP, detecting can cause NOR enter a mode instructions can not
be fetched right, which will make kernel crash.
3. For a new probe which is not listed in the rom_probe_types, if users
assign it in board files, physmap can still probe it.
Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
There is only one error exit from do_md_stop, so make that more
explicit and discard the 'err' variable.
Also drop the 'revalidate' variable by moving the unlock calls around.
Signed-off-by: NeilBrown <neilb@suse.de>
Move the deletion of sysfs attributes from reconfig_mutex to
open_mutex didn't really help as a process can try to take
open_mutex while holding reconfig_mutex, so the same deadlock can
happen, just requiring one more process to be involved in the chain.
I looks like I cannot easily use locking to wait for the sysfs
deletion to complete, so don't.
The only things that we cannot do while the deletions are still
pending is other things which can change the sysfs namespace: run,
takeover, stop. Each of these can fail with -EBUSY.
So set a flag while doing a sysfs deletion, and fail run, takeover,
stop if that flag is set.
This is suitable for 2.6.35.x
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Commit b821eaa5 "md: remove ->changed and related code" moved
revalidate_disk() under open_mutex, and lockdep noticed.
[ INFO: possible circular locking dependency detected ]
2.6.32-mdadm-locking #1
-------------------------------------------------------
mdadm/3640 is trying to acquire lock:
(&bdev->bd_mutex){+.+.+.}, at: [<ffffffff811acecb>] revalidate_disk+0x5b/0x90
but task is already holding lock:
(&mddev->open_mutex){+.+...}, at: [<ffffffffa055e07a>] do_md_stop+0x4a/0x4d0 [md_mod]
which lock already depends on the new lock.
It is suitable for 2.6.35.x
Cc: <stable@kernel.org>
Reported-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
