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media: dvb: mb86a16: check the return value of mb86a16_read()

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return an error code if mb86a16_read() gets an unexpected return
value.

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: add {} around the else statement]
This commit is contained in:
Yuanjun Gong 2023-07-25 11:35:13 +08:00 committed by Mauro Carvalho Chehab
parent 992ba89d03
commit 7b7a3c014e
1 changed files with 6 additions and 4 deletions
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10
drivers/media/dvb-frontends/mb86a16.c
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@ -1487,10 +1487,12 @@ static int mb86a16_set_fe(struct mb86a16_state *state)
}
}
mb86a16_read(state, 0x15, &agcval);
mb86a16_read(state, 0x26, &cnmval);
dprintk(verbose, MB86A16_INFO, 1, "AGC = %02x CNM = %02x", agcval, cnmval);
if (mb86a16_read(state, 0x15, &agcval) != 2 || mb86a16_read(state, 0x26, &cnmval) != 2) {
dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error");
ret = -EREMOTEIO;
} else {
dprintk(verbose, MB86A16_INFO, 1, "AGC = %02x CNM = %02x", agcval, cnmval);
}
return ret;
}