It looks like a lock may be needed before line 174.
julia
---------- Forwarded message ----------
Date: Tue, 11 Oct 2016 21:06:18 +0800
From: kbuild test robot <fengguang.wu@xxxxxxxxx>
To: kbuild@xxxxxx
Cc: Julia Lawall <julia.lawall@xxxxxxx>
Subject:
[linux-review:Mauro-Carvalho-Chehab/Don-t-use-stack-for-DMA-transers-on-medi
a-usb-drivers/20161011-182408 3/31]
drivers/media/usb/dvb-usb/cinergyT2-core.c:174:2-8: preceding lock on line
169
CC: kbuild-all@xxxxxx
TO: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
CC: linux-media@xxxxxxxxxxxxxxx
CC: 0day robot <fengguang.wu@xxxxxxxxx>
tree: https://github.com/0day-ci/linux Mauro-Carvalho-Chehab/Don-t-use-stack-for-DMA-transers-on-media-usb-drivers/20161011-182408
head: ff49f775552fe4ebe2944527cf882073679cb1e5
commit: b38d98275e144aaea9db69ba2dcba58466046d9b [3/31] cinergyT2-core: handle error code on RC query
:::::: branch date: 3 hours ago
:::::: commit date: 3 hours ago
>> drivers/media/usb/dvb-usb/cinergyT2-core.c:174:2-8: preceding lock on line 169
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout b38d98275e144aaea9db69ba2dcba58466046d9b
vim +174 drivers/media/usb/dvb-usb/cinergyT2-core.c
986bd1e5 drivers/media/dvb/dvb-usb/cinergyT2-core.c Tomi Orava 2008-09-19 163 {
7f987678 drivers/media/dvb/dvb-usb/cinergyT2-core.c Thierry MERLE 2008-09-19 164 struct cinergyt2_state *st = d->priv;
b38d9827 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 165 int i, ret;
7f987678 drivers/media/dvb/dvb-usb/cinergyT2-core.c Thierry MERLE 2008-09-19 166
986bd1e5 drivers/media/dvb/dvb-usb/cinergyT2-core.c Tomi Orava 2008-09-19 167 *state = REMOTE_NO_KEY_PRESSED;
986bd1e5 drivers/media/dvb/dvb-usb/cinergyT2-core.c Tomi Orava 2008-09-19 168
48922468 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 @169 mutex_lock(&st->data_mutex);
48922468 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 170 st->data[0] = CINERGYT2_EP1_GET_RC_EVENTS;
48922468 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 171
b38d9827 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 172 ret = dvb_usb_generic_rw(d, st->data, 1, st->data, 5, 0);
b38d9827 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 173 if (ret < 0)
b38d9827 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 @174 return ret;
48922468 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 175
48922468 drivers/media/usb/dvb-usb/cinergyT2-core.c Mauro Carvalho Chehab 2016-10-11 176 if (st->data[4] == 0xff) {
7f987678 drivers/media/dvb/dvb-usb/cinergyT2-core.c Thierry MERLE 2008-09-19 177 /* key repeat */
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