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V4L/DVB (7563): em28xx: Add missing checks
authorMauro Carvalho Chehab <mchehab@infradead.org>
Sun, 13 Apr 2008 18:08:55 +0000 (15:08 -0300)
committerMauro Carvalho Chehab <mchehab@infradead.org>
Thu, 24 Apr 2008 17:09:39 +0000 (14:09 -0300)
There are some cases where nobody is waiting for a buffer. Due to the
lack of check, if you try to abort the userspace app, machine were
hanging, since IRQ were trying to use a buffer that were disallocated.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

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