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23867b2511
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Laurent Pinchart 23867b2511 V4L/DVB (9661): uvcvideo: Commit streaming parameters when enabling the video stream 
Sonix-based cameras seem to require the host to commit video streaming
parameters before selecting the alternate endpoint. While most applications
issue a VIDIOC_S_FMT ioctl before starting streaming, this is not required
by the V4L2 specification.

The problem has been noticed on Ubuntu 8.10 with applications using libv4l.
The library blocks VIDIOC_S_FMT calls when the requested format is identical
to the currently selected format. As the driver commits video streaming
parameters when initialising the device, only the first run of a
libv4l-enabled application would succeed.

For the sake of completeness, experiment showed that the camera keeps sending
12 bytes isochronous packets (header only, no data) without toggling the FID
bit if video streaming parameters haven't been committed before selecting the
alternate endpoint.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29 17:53:36 -02:00
..
accessibility
acpi Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and 'tracing/ring-buffer'; commit 'v2.6.28' into tracing/core 2008-12-25 13:11:00 +01:00
amba
ata powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver 2008-12-21 02:54:29 -07:00
atm atm: Driver for Solos PCI ADSL2+ card. 2008-12-26 01:26:11 -08:00
auxdisplay
base
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
bluetooth Bluetooth: Enable per-module dynamic debug messages 2008-11-30 12:17:28 +01:00
cdrom Commands needing to be retried require a complete re-initialization. 2008-12-12 16:04:26 +01:00
char Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
clocksource
connector
cpufreq
cpuidle
crypto crypto: talitos - Ack done interrupt in isr instead of tasklet 2008-12-25 11:02:33 +11:00
dca
dio
dma async_xor: dma_map destination DMA_BIDIRECTIONAL 2008-12-08 13:46:00 -07:00
edac Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
eisa
firewire firewire: fw-ohci: fix IOMMU resource exhaustion 2008-12-10 12:45:34 +01:00
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
gpio
gpu drm/radeon: fix correctness of irq_enabled check for radeon. 2008-12-23 10:50:12 +10:00
hid HID: Apple ALU wireless keyboards are bluetooth devices 2008-11-28 15:09:26 +01:00
hwmon hwmon: applesmc: make applesmc load automatically on startup 2008-12-01 19:55:24 -08:00
i2c sh: sh_mobile i2c clock framework support 2008-12-22 18:42:51 +09:00
ide m68k: machw.h cleanup 2008-12-28 20:00:03 +01:00
idle
ieee1394 ieee1394: add quirk fix for Freecom HDD 2008-12-14 01:13:13 +01:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
input sh: sh_mobile keysc clock framework support 2008-12-22 18:42:51 +09:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
leds
lguest
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
mca
md Merge branch 'linus' into tracing/hw-branch-tracing 2008-12-24 21:08:26 +01:00
media V4L/DVB (9661): uvcvideo: Commit streaming parameters when enabling the video stream 2008-12-29 17:53:36 -02:00
memstick
message Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
mfd
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
mmc
mtd Merge git://git.infradead.org/mtd-2.6 2008-12-09 08:28:36 -08:00
net Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
nubus
of of/gpio: Implement of_gpio_count() 2008-12-21 14:21:14 +11:00
oprofile
parisc
parport parport_serial: fix array overflow 2008-12-01 19:55:24 -08:00
pci Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
pcmcia pcmcia: blackfin: fix bug - add missing ; to MODULE macro 2008-12-15 16:27:06 -08:00
pnp
power
ps3
rapidio rapidio: struct device - replace bus_id with dev_name(), dev_set_name() 2008-12-16 15:53:41 +11:00
regulator
rtc rtc: rtc-isl1208: reject invalid dates 2008-12-23 15:58:21 -08:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
sbus Revert "of_platform_driver noise on sparce" 2008-12-01 07:55:14 -08:00
scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2008-12-28 12:54:07 -08:00
serial Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
sh sh: maple: Do not pass SLAB_POISON to kmem_cache_create() 2008-12-16 16:40:32 +09:00
sn
spi spi: fix spi_s3c24xx_gpio num_chipselect 2008-12-01 19:55:24 -08:00
ssb
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
tc
telephony
thermal
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
uwb
video Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-12-28 16:54:33 -08:00
virtio
w1 w1: fix slave selection on big-endian systems 2008-12-23 15:58:21 -08:00
watchdog iTCO_wdt: fix typo when setting TCO_EN bit 2008-12-03 16:20:19 -08:00
xen xen: clean up asm/xen/hypervisor.h 2008-12-16 21:50:31 +01:00
zorro
Kconfig
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