V4L/DVB (7398): Adds an error if priv argument of tuner_callback is NULL
authorMauro Carvalho Chehab <mchehab@infradead.org>
Tue, 22 Apr 2008 17:46:10 +0000 (14:46 -0300)
committerMauro Carvalho Chehab <mchehab@infradead.org>
Thu, 24 Apr 2008 17:07:53 +0000 (14:07 -0300)
Adds a consistency check to avoid OOPS, if tuner_callback priv argument is
NULL. Also, simplifies callback codes on cx88.

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

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