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[media] af9035: override tuner id when bad value set into eeprom

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Tuner ID set into EEPROM is wrong in some cases, which causes driver
to select wrong tuner profile. That leads device non-working. Fix
issue by overriding known bad tuner IDs with suitable default value.

Thanks to MX-NET Telekomunikace s.r.o. for providing non-working
DTV stick, that I could fix the bug!

Cc: stable@vger.kernel.org # v3.15+
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2014-06-24 10:03:59 -03:00 committed by Mauro Carvalho Chehab
parent 13936af3d2
commit 1cbbf90d04
1 changed files with 34 additions and 8 deletions
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42
drivers/media/usb/dvb-usb-v2/af9035.c
View file

@ -704,15 +704,41 @@ static int af9035_read_config(struct dvb_usb_device *d)
if (ret < 0)
goto err;
if (tmp == 0x00)
dev_dbg(&d->udev->dev,
"%s: [%d]tuner not set, using default\n",
__func__, i);
else
state->af9033_config[i].tuner = tmp;
dev_dbg(&d->udev->dev, "%s: [%d]tuner=%02x\n",
__func__, i, state->af9033_config[i].tuner);
__func__, i, tmp);
/* tuner sanity check */
if (state->chip_type == 0x9135) {
if (state->chip_version == 0x02) {
/* IT9135 BX (v2) */
switch (tmp) {
case AF9033_TUNER_IT9135_60:
case AF9033_TUNER_IT9135_61:
case AF9033_TUNER_IT9135_62:
state->af9033_config[i].tuner = tmp;
break;
}
} else {
/* IT9135 AX (v1) */
switch (tmp) {
case AF9033_TUNER_IT9135_38:
case AF9033_TUNER_IT9135_51:
case AF9033_TUNER_IT9135_52:
state->af9033_config[i].tuner = tmp;
break;
}
}
} else {
/* AF9035 */
state->af9033_config[i].tuner = tmp;
}
if (state->af9033_config[i].tuner != tmp) {
dev_info(&d->udev->dev,
"%s: [%d] overriding tuner from %02x to %02x\n",
KBUILD_MODNAME, i, tmp,
state->af9033_config[i].tuner);
}
switch (state->af9033_config[i].tuner) {
case AF9033_TUNER_TUA9001: