The dvb demuxer code uses a 'struct timespec' to pass a timeout
as absolute time. This will cause problems on 32-bit architectures
in 2038 when time_t overflows, and it is racy with a concurrent
settimeofday() call.
This patch changes the code to use ktime_get() instead, using
the monotonic time base to avoid both the race and the overflow.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This enum is not actually used anymore. The only value used from
the enum is DMX_OK, passed as a parameter on two callbacks.
Yet, this value is not used anywhere. So, just remove it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fix various spelling errors in strings and comments throughout the media
tree. The majority of these were found using Lucas De Marchi's codespell
tool.
[m.chehab@samsung.com: discard hunks with conflicts]
Signed-off-by: Jonathan McCrohan <jmccrohan@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
removes trailing whitespace and rebalance line length in comment block
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
dmx_section_feed_release_filter() locks dvbdmx->mutex and
if the feed is still filtering, it calls feed->stop_filtering(feed).
stop_filtering() is implemented by dmx_section_feed_stop_filtering()
that first of all try to lock the same mutex: dvbdmx->mutex.
That leads to a deadlock.
It does not happen often in practice because all callers of
release_filter() stop filtering by themselves.
So the problem can happen in case of race condition only.
The patch releases dvbdmx->mutex before call to feed->stop_filtering(feed)
and reacquires the mutex after that.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
These functions may be called inside URB->complete(), so use
spin_lock_irqsave().
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
"enum dmx_ts_pes" and "typedef enum dmx_pes_type_t" are just the
same enum declared twice, since Kernel (2.6.12). There's no reason
to duplicate it there, and sparse complains about that:
drivers/media/dvb-core/dmxdev.c:600:55: warning: mixing different enum types
So, remove the internal define, keeping just the external one.
Internally, use only "enum dmx_ts_pes", as it is too late to drop
dmx_pes_type_t from the userspace API.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch avoids incrementing continuity counter
demux->cnt_storage[pid] for TS packets without payload in accordance
with ISO /IEC 13818-1.
[mchehab@redhat.com: unmangle whitespacing and fix CodingStyle.
Also checked ISO/IEC spec: patch is according with it]
Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: John Smith <johns90812@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
just like the V4L2 core, move the DVB core to drivers/media, as the
intention is to get rid of both "video" and "dvb" directories.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Arnd Bergmann