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[media] tuner-xc2028: Don't try to sleep twice 

Only send a power down command for the device if it is not already
in power down state. That prevents a timeout when trying to talk
with the device.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2014-01-06 06:39:51 -03:00
parent f5f894d19e
commit ebf044f46f
1 changed files with 13 additions and 3 deletions
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16
drivers/media/tuners/tuner-xc2028.c
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@ -709,6 +709,8 @@ static int load_scode(struct dvb_frontend *fe, unsigned int type,
return 0;
}
static int xc2028_sleep(struct dvb_frontend *fe);
static int check_firmware(struct dvb_frontend *fe, unsigned int type,
v4l2_std_id std, __u16 int_freq)
{
@ -881,7 +883,7 @@ read_not_reliable:
return 0;
fail:
priv->state = XC2028_SLEEP;
priv->state = XC2028_NO_FIRMWARE;
memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
if (retry_count < 8) {
@ -891,6 +893,9 @@ fail:
goto retry;
}
/* Firmware didn't load. Put the device to sleep */
xc2028_sleep(fe);
if (rc == -ENOENT)
rc = -EINVAL;
return rc;
@ -1276,6 +1281,10 @@ static int xc2028_sleep(struct dvb_frontend *fe)
if (no_poweroff || priv->ctrl.disable_power_mgmt)
return 0;
/* Device is already in sleep mode */
if (priv->state == XC2028_SLEEP)
return 0;
tuner_dbg("Putting xc2028/3028 into poweroff mode.\n");
if (debug > 1) {
tuner_dbg("Printing sleep stack trace:\n");
@ -1289,7 +1298,8 @@ static int xc2028_sleep(struct dvb_frontend *fe)
else
rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00});
priv->state = XC2028_SLEEP;
if (rc >= 0)
priv->state = XC2028_SLEEP;
mutex_unlock(&priv->lock);
@ -1357,7 +1367,7 @@ static void load_firmware_cb(const struct firmware *fw,
if (rc < 0)
return;
priv->state = XC2028_SLEEP;
priv->state = XC2028_ACTIVE;
}
static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)