| Message ID | 20190106163146.9518-1-pakki001@umn.edu (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] ALSA: ice1712: fix a missing check of snd_i2c_sendbytes | expand |
On Sun, 06 Jan 2019 17:31:44 +0100, Aditya Pakki wrote: > > snd_i2c_sendbytes could fail. The fix checks its return value: if it > fails, issues an error message and returns with its error code. > > Signed-off-by: Aditya Pakki <pakki001@umn.edu> Thanks, applied. Takashi
diff --git a/sound/pci/ice1712/ews.c b/sound/pci/ice1712/ews.c index b8af747ecb43..7646c93e8268 100644 --- a/sound/pci/ice1712/ews.c +++ b/sound/pci/ice1712/ews.c @@ -826,7 +826,12 @@ static int snd_ice1712_6fire_read_pca(struct snd_ice1712 *ice, unsigned char reg snd_i2c_lock(ice->i2c); byte = reg; - snd_i2c_sendbytes(spec->i2cdevs[EWS_I2C_6FIRE], &byte, 1); + if (snd_i2c_sendbytes(spec->i2cdevs[EWS_I2C_6FIRE], &byte, 1)) { + snd_i2c_unlock(ice->i2c); + dev_err(ice->card->dev, "cannot send pca\n"); + return -EIO; + } + byte = 0; if (snd_i2c_readbytes(spec->i2cdevs[EWS_I2C_6FIRE], &byte, 1) != 1) { snd_i2c_unlock(ice->i2c);
snd_i2c_sendbytes could fail. The fix checks its return value: if it fails, issues an error message and returns with its error code. Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- sound/pci/ice1712/ews.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)