From: Aditya Pakki <pakki001@umn.edu>
To: pakki001@umn.edu
Cc: kjlu@umn.edu, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: [PATCH] [v2] ALSA: ice1712: fix a missing check of snd_i2c_sendbytes
Date: Sun, 6 Jan 2019 10:31:44 -0600 [thread overview]
Message-ID: <20190106163146.9518-1-pakki001@umn.edu> (raw)
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(-)
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);
--
2.17.1
next reply other threads:[~2019-01-06 16:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-06 16:31 Aditya Pakki [this message]
2019-01-07 10:58 ` [PATCH] [v2] ALSA: ice1712: fix a missing check of snd_i2c_sendbytes Takashi Iwai
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