From 099b7fcc770764ec06441066fddd90b97d868e11 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Thu, 13 Nov 2008 14:01:15 -0300
Subject: [PATCH] V4L/DVB (9618): tvaudio: add additional logic to avoid OOPS

This patch checks for volume, bass, treble, set mode and get mode
callbacks before actually enabling the code that would use them.

Instead of aborting the driver for load, this patch will allow it to
load with a reduced number of functionatities.

This prevents OOPS if some board entry is missing a needed callback.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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