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| author | Alaa Emad <alaaemadhossney.ae@gmail.com> | 2021-05-03 14:57:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 19:32:41 +0300 |
| commit | c6d822c56e7fd29e6fa1b1bb91b98f6a1e942b3c (patch) | |
| tree | b1657e71b77e54ff82b525674c3dbb45ac942210 /drivers/media | |
| parent | 47e4ff06fa7f5ba4860543a2913bbd0c164640aa (diff) | |
| download | linux-c6d822c56e7fd29e6fa1b1bb91b98f6a1e942b3c.tar.xz | |
media: dvb: Add check on sp8870_readreg return
The function sp8870_readreg returns a negative value when i2c_transfer
fails so properly check for this and return the error if it happens.
Cc: Sean Young <sean@mess.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Alaa Emad <alaaemadhossney.ae@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-60-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb-frontends/sp8870.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/dvb-frontends/sp8870.c b/drivers/media/dvb-frontends/sp8870.c index ee893a2f2261..9767159aeb9b 100644 --- a/drivers/media/dvb-frontends/sp8870.c +++ b/drivers/media/dvb-frontends/sp8870.c @@ -280,7 +280,9 @@ 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 < 0) + return err; // system controller start sp8870_microcontroller_start(state); |