Let the po1030 have a local v4l2 ctrl cache as this minimizes the load on reading the registers and improves performance.
Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
s5k83a sensor mounted on many acer laptops have a swiwel allowing it to be rotated. When the camera is in its rotated state, the image needs to be flipped. The only way to check for if the camera has been flipped is to continously poll a register in the m5602. This patch creates a kernel thread which does this. This patch renames some v4l2 ctrls and finally implements a cache in order to prevent unnecessary sensor reads.
Signed-off-by: Luk?? Karas <lukas.karas@centrum.cz>
Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
ocfs2/net: Use wait_event() in o2net_send_message_vec()
ocfs2: Adjust rightmost path in ocfs2_add_branch.
ocfs2: fdatasync should skip unimportant metadata writeout
ocfs2: Remove redundant gotos in ocfs2_mount_volume()
ocfs2: Add statistics for the checksum and ecc operations.
ocfs2 patch to track delayed orphan scan timer statistics
ocfs2: timer to queue scan of all orphan slots
ocfs2: Correct ordering of ip_alloc_sem and localloc locks for directories
ocfs2: Fix possible deadlock in quota recovery
ocfs2: Fix possible deadlock with quotas in ocfs2_setattr()
ocfs2: Fix lock inversion in ocfs2_local_read_info()
ocfs2: Fix possible deadlock in ocfs2_global_read_dquot()
ocfs2: update comments in masklog.h
ocfs2: Don't printk the error when listing too many xattrs.
* serial:
imx: Check for NULL pointer deref before calling tty_encode_baud_rate
atmel_serial: fix hang in set_termios when crtscts is enabled
MAINTAINERS: update 8250 section, give Alan Cox a name
tty: fix sanity check
pty: Narrow the race on ldisc locking
tty: fix unused warning when TCGETX is not defined
ldisc: debug aids
ldisc: Make sure the ldisc isn't active when we close it
tty: Fix leaks introduced by the shift to separate ldisc objects
Fix conflicts in drivers/char/pty.c due to earlier version of the ldisc
race narrowing.
After enabling hardware flow control, any subsequent termios call may hang
waiting for the transmitter to drain. This appears to be caused by a
busy-loop in set_termios() waiting for the transmitter to become empty,
which may take a very long time (or hang indefinitely) if the device at
the other end is blocking us.
A quick look through the tty and serial_core code indicates that any
necessary flushing (which is optional) has already been done at this
point, so there's no need for the driver to flush the transmitter on its
own.
Fix it by removing the busy-loop altogether.
Tested-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The WARN_ON() that was added to tty_reopen can be triggered in the specific
case of a hangup occurring during a re-open of a tty which is not in the
middle of being otherwise closed.
In that case however the WARN() is bogus as we don't hold the neccessary
locks to make a correct decision.
The case we should be checking is "if the ldisc is not changing and reopen
is occuring". We could drop the WARN_ON but for the moment the debug is more
valuable even if it means taking a mutex as it will find any other cases.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The pty code has always been buggy on its ldisc handling. The recent
changes made the window for the race much bigger. Pending fixing it
properly which is not at all trivial, at least make the race small again so
we don't disrupt other dev work.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If TCGETX is not defined, we end up with this warning:
drivers/char/tty_ioctl.c: In function ‘tty_mode_ioctl’:
drivers/char/tty_ioctl.c:950: warning: unused variable ‘ktermx’
Since the variable is only used in one case statement, push it down to
the local case scope.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (30 commits)
sparc64: Update defconfig.
sparc: Wire up sys_rt_tgsigqueueinfo().
openprom: Squelch useless GCC warning.
sparc: replace uses of CPU_MASK_ALL_PTR
sparc64: Add proper dynamic ftrace support.
sparc: Simplify code using is_power_of_2() routine.
sparc: move of_device common code to of_device_common
sparc: remove dma-mapping_{32|64}.h
sparc: use dma_map_page instead of dma_map_single
sparc: add sync_single_for_device and sync_sg_for_device to struct dma_ops
sparc: move the duplication in dma-mapping_{32|64}.h to dma-mapping.h
p9100: use standard fields for framebuffer physical address and length
leo: use standard fields for framebuffer physical address and length
cg6: use standard fields for framebuffer physical address and length
cg3: use standard fields for framebuffer physical address and length
cg14: use standard fields for framebuffer physical address and length
bw2: use standard fields for framebuffer physical address and length
sparc64: fix and optimize irq distribution
sparc64: Use new dynamic per-cpu allocator.
sparc64: Only allocate per-cpu areas for possible cpus.
...
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (27 commits)
Blackfin: hook up new rt_tgsigqueueinfo syscall
Blackfin: improve CLKIN_HZ config default
Blackfin: initial support for ftrace grapher
Blackfin: initial support for ftrace
Blackfin: enable support for LOCKDEP
Blackfin: add preliminary support for STACKTRACE
Blackfin: move custom sections into sections.h
Blackfin: punt unused/wrong mutex-dec.h
Blackfin: add support for irqflags
Blackfin: add support for bzip2/lzma compressed kernel images
Blackfin: convert Kconfig style to def_bool
Blackfin: bf548-ezkit: update smsc911x resources
Blackfin: update aedos-ipipe code to upstream 1.10-00
Blackfin: bf537-stamp: update ADP5520 resources
Blackfin: bf518f-ezbrd: fix SPI CS for SPI flash
Blackfin: define SPI IRQ in board resources
Blackfin: do not configure the UART early if on wrong processor
Blackfin: fix deadlock in SMP IPI handler
Blackfin: fix flag storage for irq funcs
Blackfin: push down exception oops checking
...
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: remove some includings of blktrace_api.h
mg_disk: seperate mg_disk.h again
block: Introduce helper to reset queue limits to default values
cfq: remove extraneous '\n' in blktrace output
ubifs: register backing_dev_info
btrfs: properly register fs backing device
block: don't overwrite bdi->state after bdi_init() has been run
cfq: cleanup for last_end_request in cfq_data
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (38 commits)
ps3flash: Always read chunks of 256 KiB, and cache them
ps3flash: Cache the last accessed FLASH chunk
ps3: Replace direct file operations by callback
ps3: Switch ps3_os_area_[gs]et_rtc_diff to EXPORT_SYMBOL_GPL()
ps3: Correct debug message in dma_ioc0_map_pages()
drivers/ps3: Add missing annotations
ps3fb: Use ps3_system_bus_[gs]et_drvdata() instead of direct access
ps3flash: Use ps3_system_bus_[gs]et_drvdata() instead of direct access
ps3: shorten ps3_system_bus_[gs]et_driver_data to ps3_system_bus_[gs]et_drvdata
ps3: Use dev_[gs]et_drvdata() instead of direct access for system bus devices
block/ps3: remove driver_data direct access of struct device
ps3vram: Make ps3vram_priv.reports a void *
ps3vram: Remove no longer used ps3vram_priv.ddr_base
ps3vram: Replace mutex by spinlock + bio_list
block: Add bio_list_peek()
powerpc: Use generic atomic64_t implementation on 32-bit processors
lib: Provide generic atomic64_t implementation
powerpc: Add compiler memory barrier to mtmsr macro
powerpc/iseries: Mark signal_vsp_instruction() as maybe unused
powerpc/iseries: Fix unused function warning in iSeries DT code
...
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
therm_windtunnel: Convert to a new-style i2c driver
therm_adt746x: Convert to a new-style i2c driver
windfarm: Convert to new-style i2c drivers
therm_pm72: Convert to a new-style i2c driver
i2c-viapro: Add new PCI device ID for VX855
i2c/chips: Move max6875 to drivers/misc/eeprom
i2c: Do not give adapters a default parent
i2c: Do not probe for TV chips on Voodoo3 adapters
i2c: Retry automatically on arbitration loss
i2c: Remove void casts
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits)
ACPICA: Update version to 20090521.
ACPICA: Disable preservation of SCI enable bit (SCI_EN)
ACPICA: Region deletion: Ensure region object is removed from handler list
ACPICA: Eliminate extra call to NsGetParentNode
ACPICA: Simplify internal operation region interface
ACPICA: Update Load() to use operation region interfaces
ACPICA: New: AcpiInstallMethod - install a single control method
ACPICA: Invalidate DdbHandle after table unload
ACPICA: Fix reference count issues for DdbHandle object
ACPICA: Simplify and optimize NsGetNextNode function
ACPICA: Additional validation of _PRT packages (resource mgr)
ACPICA: Fix DebugObject output for DdbHandle objects
ACPICA: Fix allowable release order for ASL mutex objects
ACPICA: Mutex support: Fix release ordering issue and current sync level
ACPICA: Update version to 20090422.
ACPICA: Linux OSL: cleanup/update/merge
ACPICA: Fix implementation of AML BreakPoint operator (break to debugger)
ACPICA: Fix miscellaneous warnings under gcc 4+
ACPICA: Miscellaneous lint changes
ACPICA: Fix possible dereference of null pointer
...
The pty code has always been buggy on its ldisc handling. The recent
changes made the window for the race much bigger. Pending fixing it
properly which is not at all trivial, at least make the race small again so
we don't disrupt other dev work.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Several WARN_ON() messages omit the '\n' at the end of the string, which
is a simple (and understandable) error. The next line printed after
that warning line is usually the current module list, and that printk
does not have a log-level marker - resulting in one long mixed-up line.
Adding this loglevel marker will now avoid this unreadable mess.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This adds a KERN_DEFAULT loglevel marker, for when you cannot decide
which loglevel you want, and just want to keep an existing printk
with the default loglevel.
The difference between having KERN_DEFAULT and having no log-level
marker at all is two-fold:
- having the log-level marker will now force a new-line if the
previous printout had not added one (perhaps because it forgot,
but perhaps because it expected a continuation)
- having a log-level marker is required if you are printing out a
message that otherwise itself could perhaps otherwise be mistaken
for a log-level.
Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
It used to be that we would only look at the log-level in a printk()
after explicit newlines, which can cause annoying problems when the
previous printk() did not end with a '\n'. In that case, the log-level
marker would be just printed out in the middle of the line, and be
seen as just noise rather than change the logging level.
This changes things to always look at the log-level in the first
bytes of the printout. If a log level marker is found, it is always
used as the log-level. Additionally, if no newline existed, one is
added (unless the log-level is the explicit KERN_CONT marker, to
explicitly show that it's a continuation of a previous line).
Acked-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/sbus/char/openprom.c: In function ‘openprom_sunos_ioctl’:
drivers/sbus/char/openprom.c:306: warning: ‘opp’ may be used uninitialized in this function
Signed-off-by: David S. Miller <davem@davemloft.net>
CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so:
#define CPU_MASK_ALL (cpumask_t) { { ... } }
Taking the address of such a temporary is questionable at best,
unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added
CPU_MASK_ALL_PTR:
#define CPU_MASK_ALL_PTR (&CPU_MASK_ALL)
Which formalizes this practice. One day gcc could bite us over this
usage (though we seem to have gotten away with it so far).
[Description by Rusty Russell]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch moves code common to of_device_32.c and of_device_64.c into
of_device_common.h and of_device_common.c.
The only functional difference is in sparc32 where of_bus_default_map is
used in place of of_bus_sbus_map because they are equivelent.
There is still room for further code consolidation with some minor
refactoring.
Boot tested on sparc32 and compile tested on sparc64.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This modifies SPARC32 to use struct dma_map ops. It means that we can
remove dma-mapping_{32|64}.h.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch converts dma_map_single and dma_unmap_single to use
map_page and unmap_page respectively and removes unnecessary
map_single and unmap_single. map_page can be used to implement
map_single but the opposite is impossible. Having only dma_map_page in
struct dma_ops is enough.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds sync_single_for_device() and sync_sg_for_device() to struct
dma_ops in order to unify dma-mpping_{32|64}.h. dma-mpping_32.h needs them though dma-mpping_64.h doesn't.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
