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ASoC: codecs: lpass-rx-macro: Fix uninitialized variable ec_tx

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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: 4f692926f5 ("ASoC: codecs: lpass-rx-macro: add dapm widgets and route")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210215163313.84026-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Colin Ian King 2021-02-15 16:33:13 +00:00 committed by Mark Brown
parent 0d2b6e3989
commit 0c0a588378
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1 changed files with 1 additions and 1 deletions
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2
sound/soc/codecs/lpass-rx-macro.c
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@ -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);