From: Malcolm Priestley <tvboxspy@gmail.com>
To: linux-media@vger.kernel.org
Cc: Andrey Konovalov <andreyknvl@google.com>,
Malcolm Priestley <tvboxspy@gmail.com>
Subject: [PATCH 2/2] media: dvb-usb-v2: lmedm04: move ts2020 attach to dm04_lme2510_tuner
Date: Tue, 26 Sep 2017 22:10:21 +0100 [thread overview]
Message-ID: <20170926211021.11036-2-tvboxspy@gmail.com> (raw)
In-Reply-To: <20170926211021.11036-1-tvboxspy@gmail.com>
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>
---
drivers/media/usb/dvb-usb-v2/lmedm04.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c
index 992f2011a6ba..be26c029546b 100644
--- a/drivers/media/usb/dvb-usb-v2/lmedm04.c
+++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c
@@ -1076,8 +1076,6 @@ 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;
@@ -1143,17 +1141,18 @@ 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;
}
--
2.14.1
next prev parent reply other threads:[~2017-09-26 21:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-26 21:10 [PATCH 1/2] media: dvb-usb-v2: lmedm04: Improve logic checking of warm start Malcolm Priestley
2017-09-26 21:10 ` Malcolm Priestley [this message]
2017-09-27 11:52 ` [PATCH 2/2] media: dvb-usb-v2: lmedm04: move ts2020 attach to dm04_lme2510_tuner Andrey Konovalov
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