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media: dvb-usb-v2: lmedm04: move ts2020 attach to dm04_lme2510_tuner

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commit 7bf7a7116e upstream.

When the tuner was split from m88rs2000 the attach function is in wrong
place.

Move to dm04_lme2510_tuner to trap errors on failure and removing
a call to lme_coldreset.

Prevents driver starting up without any tuner connected.

Fixes to trap for ts2020 fail.
LME2510(C): FE Found M88RS2000
ts2020: probe of 0-0060 failed with error -11
...
LME2510(C): TUN Found RS2000 tuner
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley
2017-09-26 17:10:21 -04:00
committed by Greg Kroah-Hartman
parent 1ff1353a03
commit f320dd2022
1 changed files with 6 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/media/usb/dvb-usb-v2/lmedm04.c
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@@ -1084,8 +1084,6 @@ static int dm04_lme2510_frontend_attach(struct dvb_usb_adapter *adap)
if (adap->fe[0]) {
info("FE Found M88RS2000");
dvb_attach(ts2020_attach, adap->fe[0], &ts2020_config,
&d->i2c_adap);
st->i2c_tuner_gate_w = 5;
st->i2c_tuner_gate_r = 5;
st->i2c_tuner_addr = 0x60;
@@ -1151,17 +1149,18 @@ static int dm04_lme2510_tuner(struct dvb_usb_adapter *adap)
ret = st->tuner_config;
break;
case TUNER_RS2000:
ret = st->tuner_config;
if (dvb_attach(ts2020_attach, adap->fe[0],
&ts2020_config, &d->i2c_adap))
ret = st->tuner_config;
break;
default:
break;
}
if (ret)
if (ret) {
info("TUN Found %s tuner", tun_msg[ret]);
else {
info("TUN No tuner found --- resetting device");
lme_coldreset(d);
} else {
info("TUN No tuner found");
return -ENODEV;
}