From: Aditya Pakki Date: Thu, 27 Dec 2018 18:58:01 +0000 (-0500) Subject: media: dvb: Add check on sp8870_readreg X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=467a37fba93f2b4fe3ab597ff6a517b22b566882;p=openwrt%2Fstaging%2Fblogic.git media: dvb: Add check on sp8870_readreg In sp8870_set_frontend_parameters, the function sp8870_readreg may return an error when i2c_transfer fails. The fix checks for this error and returns upstream consistent with other invocations. Signed-off-by: Aditya Pakki Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb-frontends/sp8870.c b/drivers/media/dvb-frontends/sp8870.c index 8d31cf3f4f07..270a3c559e08 100644 --- a/drivers/media/dvb-frontends/sp8870.c +++ b/drivers/media/dvb-frontends/sp8870.c @@ -293,7 +293,9 @@ static int sp8870_set_frontend_parameters(struct dvb_frontend *fe) sp8870_writereg(state, 0xc05, reg0xc05); // read status reg in order to clear pending irqs - sp8870_readreg(state, 0x200); + err = sp8870_readreg(state, 0x200); + if (err) + return err; // system controller start sp8870_microcontroller_start(state);