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media: mb86a16: be more resilient if I2C fails on sync

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If the I2C read fails while check for sync, there's no point
on doing adjusting the tuner due to a random value that might
be at VIRM var. So, set VIRM to zero, as that makes the caller
for check_sync() to return an error.

Fix those smatch warnings:
	drivers/media/dvb-frontends/mb86a16.c:1460 mb86a16_set_fe() error: uninitialized symbol 'VIRM'.
	drivers/media/dvb-frontends/mb86a16.c:1461 mb86a16_set_fe() error: uninitialized symbol 'VIRM'.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2017-11-01 17:06:02 -04:00
parent 452c644694
commit 15e3145a70
1 changed files with 1 additions and 0 deletions
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1
drivers/media/dvb-frontends/mb86a16.c
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@ -635,6 +635,7 @@ static int sync_chk(struct mb86a16_state *state,
return sync;
err:
dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error");
*VIRM = 0;
return -EREMOTEIO;
}