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From: Laurent Pinchart <laurent.pinchart@skynet.be>
The uvcvideo driver makes use of the usb_endpoint_* functions as well as
the list_first_entry and uninitialized_var macros. Add them to v4l/compat.h
and update the driver with kernel version-based conditional compilation
sections.
Priority: normal
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
Failed requests will now generate a one-time warning message instead of the
usual "Failed to query..." error, which should be more user-friendly. The
driver will also recover automatically from failed GET_MIN/GET_MAX requests
when the device is half-broken without requiring the MINMAX quirk (fully
broken devices still need the quirk).
Priority: normal
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
When streaming in a fixed size format the driver sets a flag in the uvc_queue
structure to drop incomplete incoming frames. The flag wasn't cleared when
switching to a variable size format, which resulted in a broken
'MJPEG after YUV'.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
Pass the payload size instead of the header size to uvc_video_decode_end() to
avoid generating an extra trace message for each frame.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Julia Lawall <julia@diku.dk>
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
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- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
Data buffers on the stack are not allowed for USB I/O. Use dynamically
allocated buffers instead.
Signed-off-by: Bruce Schmid <duck@freescale.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
All submitted URBs must be killed at suspend time, but URB buffers don't have
to be freed. Avoiding a free on suspend/reallocate on resume lowers the presure
on system memory.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
The swap device might still be asleep, so memory allocated in the resume
handler must use GFP_NOIO. Thanks to Oliver Neukum for catching and reporting
this bug.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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USB Video Class driver
This driver supports video input devices compliant with the USB Video Class
specification. This means lots of currently manufactured webcams, and probably
most of the future ones.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Notice: Due to MAINTAINERS file that isn't at mercurial tree, I've
committed it on my -git and backported to -hg.
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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