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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-11-01 17:05:54 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-11 13:14:44 -0500 |
| commit | ad7b57d58d16666f607914bf9ff6950e1c5532a4 (patch) | |
| tree | eee3d05d1299fd242dafc7ea2827965f4e80846e /drivers/media/usb/dvb-usb-v2 | |
| parent | f161544d9d7d8e617c13fe30504317c417ed49e9 (diff) | |
| download | linux-stable-ad7b57d58d16666f607914bf9ff6950e1c5532a4.tar.gz linux-stable-ad7b57d58d16666f607914bf9ff6950e1c5532a4.tar.bz2 linux-stable-ad7b57d58d16666f607914bf9ff6950e1c5532a4.zip | |
media: mxl111sf: improve error handling logic
As reported by smatch:
drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c:485 mxl111sf_demod_read_signal_strength() error: uninitialized symbol 'modulation'.
The mxl111sf_demod_read_signal_strength() just ignores if something
gets wrong while reading snr or modulation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c b/drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c index f0ed37da73d4..221cf46b4140 100644 --- a/drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c +++ b/drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c @@ -477,10 +477,15 @@ static int mxl111sf_demod_read_signal_strength(struct dvb_frontend *fe, { struct mxl111sf_demod_state *state = fe->demodulator_priv; enum fe_modulation modulation; + int ret; u16 snr; - mxl111sf_demod_calc_snr(state, &snr); - mxl1x1sf_demod_get_tps_modulation(state, &modulation); + ret = mxl111sf_demod_calc_snr(state, &snr); + if (ret < 0) + return ret; + ret = mxl1x1sf_demod_get_tps_modulation(state, &modulation); + if (ret < 0) + return ret; switch (modulation) { case QPSK: |