The patch
ASoC: Variable "val" in function rt274_i2c_probe() could be uninitialized
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 8c3590de0a378c2449fc1aec127cc693632458e4 Mon Sep 17 00:00:00 2001
From: Yizhuo yzhai003@ucr.edu Date: Thu, 3 Jan 2019 13:59:12 -0800 Subject: [PATCH] ASoC: Variable "val" in function rt274_i2c_probe() could be uninitialized
Inside function rt274_i2c_probe(), if regmap_read() function returns -EINVAL, then local variable "val" leaves uninitialized but used in if statement. This is potentially unsafe.
Signed-off-by: Yizhuo yzhai003@ucr.edu Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt274.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/rt274.c b/sound/soc/codecs/rt274.c index 0ef966d56bac..e2855ab9a2c6 100644 --- a/sound/soc/codecs/rt274.c +++ b/sound/soc/codecs/rt274.c @@ -1128,8 +1128,11 @@ static int rt274_i2c_probe(struct i2c_client *i2c, return ret; }
- regmap_read(rt274->regmap, + ret = regmap_read(rt274->regmap, RT274_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &val); + if (ret) + return ret; + if (val != RT274_VENDOR_ID) { dev_err(&i2c->dev, "Device with ID register %#x is not rt274\n", val);