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[media] au8522: bug-fix: enable modulation AFTER tune (instead of before tuning)

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The au8522 driver programs the tuner after programming the demodulator,
but the tuner should be programmed first. This patch fixes this behavior.

EDIT: Apparantly Devin created a similar patch some time ago, but hasn't
submitted it for merge.  I never saw his patch, but I thank him anyhow
for his efforts.  In addition, Devin pointed out a flaw in my patch:

This newly generated patch takes Devin's comments into account.

Thanks-to: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Michael Krufky 2012-03-12 17:07:22 -03:00 committed by Mauro Carvalho Chehab
parent 22f1732fcd
commit ef3d2dc366
1 changed files with 5 additions and 5 deletions
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10
drivers/media/dvb/frontends/au8522_dig.c
View file

@ -588,11 +588,6 @@ static int au8522_set_frontend(struct dvb_frontend *fe)
(state->current_modulation == c->modulation))
return 0;
au8522_enable_modulation(fe, c->modulation);
/* Allow the demod to settle */
msleep(100);
if (fe->ops.tuner_ops.set_params) {
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
@ -604,6 +599,11 @@ static int au8522_set_frontend(struct dvb_frontend *fe)
if (ret < 0)
return ret;
/* Allow the tuner to settle */
msleep(100);
au8522_enable_modulation(fe, c->modulation);
state->current_frequency = c->frequency;
return 0;