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ALSA: ice1712: Check correct return value to snd_i2c_sendbytes (EWS/DMX 6Fire) 

Check for exact and correct return value to snd_i2c_sendbytes
call for EWS/DMX 6Fire (snd_ice1712).

Fixes a systemic error on every boot starting from kernel 5.1
onwards to snd_ice1712 driver ("cannot send pca") on Terratec
EWS/DMX 6Fire PCI soundcards.

Check for exact and correct return value to snd_i2c_sendbytes
call for EWS/DMX 6Fire (snd_ice1712).

Fixes a systemic error on every boot to snd_ice1712 driver
("cannot send pca") on Terratec EWS/DMX 6Fire PCI soundcards.

Fixes: c99776cc40 ("ALSA: ice1712: fix a missing check of snd_i2c_sendbytes")
Signed-off-by: Rui Nuno Capela <rncbc@rncbc.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Rui Nuno Capela 2019-06-07 15:13:37 +01:00 committed by Takashi Iwai
parent d8fa87c368
commit 352bcae97f
1 changed files with 1 additions and 1 deletions
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2
sound/pci/ice1712/ews.c
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@ -826,7 +826,7 @@ static int snd_ice1712_6fire_read_pca(struct snd_ice1712 *ice, unsigned char reg
snd_i2c_lock(ice->i2c);
byte = reg;
if (snd_i2c_sendbytes(spec->i2cdevs[EWS_I2C_6FIRE], &byte, 1)) {
if (snd_i2c_sendbytes(spec->i2cdevs[EWS_I2C_6FIRE], &byte, 1) != 1) {
snd_i2c_unlock(ice->i2c);
dev_err(ice->card->dev, "cannot send pca\n");
return -EIO;