[PATCH][next] ASoC: codecs: lpass-rx-macro: Fix uninitialized variable ec_tx
From: Colin Ian King colin.king@canonical.com
There is potential read of the uninitialized variable ec_tx if the call to snd_soc_component_read fails or returns an unrecognized w->name. To avoid this corner case, initialize ec_tx to -1 so that it is caught later when ec_tx is bounds checked.
Addresses-Coverity: ("Uninitialized scalar variable") Fixes: 4f692926f562 ("ASoC: codecs: lpass-rx-macro: add dapm widgets and route") Signed-off-by: Colin Ian King colin.king@canonical.com --- sound/soc/codecs/lpass-rx-macro.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c index c9c21d22c2c4..8c04b3b2c907 100644 --- a/sound/soc/codecs/lpass-rx-macro.c +++ b/sound/soc/codecs/lpass-rx-macro.c @@ -2895,7 +2895,7 @@ static int rx_macro_enable_echo(struct snd_soc_dapm_widget *w, { struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); u16 val, ec_hq_reg; - int ec_tx; + int ec_tx = -1;
val = snd_soc_component_read(component, CDC_RX_INP_MUX_RX_MIX_CFG4);
On Mon, 15 Feb 2021 16:33:13 +0000, Colin King wrote:
There is potential read of the uninitialized variable ec_tx if the call to snd_soc_component_read fails or returns an unrecognized w->name. To avoid this corner case, initialize ec_tx to -1 so that it is caught later when ec_tx is bounds checked.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: codecs: lpass-rx-macro: Fix uninitialized variable ec_tx commit: 2d003ec15396cc8ffa2a887605c98a967de3078d
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.
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Thanks, Mark
participants (2)
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Colin King -
Mark Brown