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From: Jesper Juhl <jesper.juhl@gmail.com>
The coverity checker detected a use-after-free error in
drivers/media/video/cpia2/cpia2_v4l.c::cpia2_close() (coverity
error #1281).
What happens is that we lock cam->busy_lock, then proceed to free
resources, and in the case of (--cam->open_count == 0) we finish off by
doing a kfree(cam) and then at the end of the function we do a
mutex_unlock(&cam->busy_lock) which will explode since it'll dereference
the free'd `cam' :
...
mutex_lock(&cam->busy_lock);
...
if (--cam->open_count == 0) {
...
if (!cam->present) {
video_unregister_device(dev);
kfree(cam);
}
}
mutex_unlock(&cam->busy_lock); <--- PROBLEM, cam no longer around.
...
Since this only happens in the case of open_count going down to zero I
don't see a problem with just releasing the mutex after unregistering the
device and just before the kfree(). In this case there is nothing around
that we can race against; we are in the release method, open_count is zero,
(!cam->present) and the device has just been unregistered, so letting go of
the mutex at this point looks safe to me.
Patch below to implement that solution.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dave Jones <davej@redhat.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Previously, it were showing the pointer value, instead of
the setted bits.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Adrian Bunk <bunk@stusta.de>
This patch makes the following needlessly global code static:
- pwc-ctrl.c: pwc_get_leds()
- pwc_preferred_compression
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Adrian Bunk <bunk@stusta.de>
Make two needlessly global functions static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Michael Krufky <mkrufky@linuxtv.org>
clear EN_I2SIN_ENABLE bit for ASUS PVR-416 to enable audio
streaming in both raw video and blackbird mpeg encoder modes.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Michael Krufky <mkrufky@linuxtv.org>
Removed the switch..case block in blackbird_probe for setting encoder height
based on video standard. All blackbird devices can rely on tvnorm->id to
retrieve this information from the cx2388x video decoder - tuner_formats
should not be used to determine the encoding video standard.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Cameron Hutchinson <camh@xdna.net>
Signed-off-by: Cameron Hutchinson <camh@xdna.net>
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From: Yeasah Pell <yeasah@schwide.net>
Signed-off-by: Yeasah Pell <yeasah@schwide.net>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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third kmalloc() failed. Besides this, i have also consolidated the three error handlings into one and removed the unneeded casts.
From: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
ivtv uses the memory (DMA) interface with the CX2341X, while pvrusb2 and
cx88-blackbird use the streaming interface. This setting is now selectable
by the driver.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Henrik Sjoberg <hsjo@epact.se>
Signed-off-by: Henrik Sjoberg <hsjo@epact.se>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Michael Krufky <mkrufky@linuxtv.org>
Add support for FusionHDTV 3 Gold (original revision), using the
card definition for FusionHDTV3 Gold-Q
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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present
From: Sigmund Augdal Helberg <sigmund@snap.tv>
Signed-off-by: Sigmund Augdal Helberg <sigmund@snap.tv>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Sigmund Augdal Helberg <sigmund@snap.tv>
Signed-off-by: Sigmund Augdal Helberg <sigmund@snap.tv>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Bryan Scott <sirbryan@gmail.com>
Signed-off-by: Bryan Scott <sirbryan@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
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From: Michael Krufky <mkrufky@linuxtv.org>
... another leftover bug from a previous merge
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Michael Krufky <mkrufky@linuxtv.org>
This Kconfig description is incorrect, due to a previous merge a while back.
CONFIG_SAA711X builds module saa7115, which is the newer module, and is
not obsoleted.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Ovcamship is used only on some USB webcams (OV511 and W9968CF)
Bettet to leave this item just after those webcams.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mac Michaels <wmichaels@earthlink.net>
- fix missing line in VSB snr decoding logic for lgdt3303
Signed-off-by: Mac Michaels <wmichaels@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Zac Bowling <zac@zacbowling.com>
Add detection for the LifeView3000 NTSC model (right now the PAL version is
the only one in there, which is sort of annoying for me living in the US
and all.. sigh...)
This is one of those things that I like to classify "as a works for me so
take it or leave it" :-) . Not that worried because its an $18 video
capture card that didn't look it was selling to well in the US, but then
again who knows.
The documentation needs updating too I bet but its behind anyways usually
to what is in the code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Zac Bowling <zac@zacbowling.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
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