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[media] adv7604: return immediately if the new input is equal to what is configured

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Signed-off-by: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mats Randgaard 2013-12-05 10:24:05 -03:00 committed by Mauro Carvalho Chehab
parent 94b1301311
commit ff4f80fdfa
1 changed files with 8 additions and 1 deletions
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9
drivers/media/i2c/adv7604.c
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@ -1479,7 +1479,11 @@ static int adv7604_s_routing(struct v4l2_subdev *sd,
{
struct adv7604_state *state = to_state(sd);
v4l2_dbg(2, debug, sd, "%s: input %d", __func__, input);
v4l2_dbg(2, debug, sd, "%s: input %d, selected input %d",
__func__, input, state->selected_input);
if (input == state->selected_input)
return 0;
state->selected_input = input;
@ -1524,6 +1528,8 @@ static int adv7604_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
u8 fmt_change, fmt_change_digital, tx_5v;
u32 input_status;
v4l2_dbg(2, debug, sd, "%s: ", __func__);
/* format change */
fmt_change = io_read(sd, 0x43) & 0x98;
if (fmt_change)
@ -2124,6 +2130,7 @@ static int adv7604_probe(struct i2c_client *client,
/* initialize variables */
state->restart_stdi_once = true;
state->prev_input_status = ~0;
state->selected_input = ~0;
/* platform data */
if (!pdata) {