[media] drxk: fix CNR calculus
authorMauro Carvalho Chehab <mchehab@redhat.com>
Fri, 22 Mar 2013 09:37:32 +0000 (06:37 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Fri, 22 Mar 2013 12:46:45 +0000 (09:46 -0300)
commit48f72a1a4caaaac6cc22b6c4b6471286955a590d
treebd2fcff2352cc51a87292dfde0f3ed5a9028cd9e
parentf35d09db0e61009679e41cc5afa2d205b99c3816
[media] drxk: fix CNR calculus

Changeset 8f3741e accidentally broke the CNR estimation. It should
be calculated as "a + b - c". However, previously, the subtraction
by c only occurred if SNR would be positive, due to a bad binding
to DVBv3 API.

This also fixes the following warning:
drivers/media/dvb-frontends/drxk_hard.c:2556:6: warning: variable 'c' set but not used [-Wunused-but-set-variable]

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/dvb-frontends/drxk_hard.c