ASoC: codecs: wsa-macro: fix uninitialized stack variables with name …

…prefix

commit 72151ad upstream.

Driver compares widget name in wsa_macro_spk_boost_event() widget event
callback, however it does not handle component's name prefix.  This
leads to using uninitialized stack variables as registers and register
values.  Handle gracefully such case.

Fixes: 2c4066e ("ASoC: codecs: lpass-wsa-macro: add dapm widgets and route")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231003155422.801160-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/soc/codecs/lpass-wsa-macro.c

@@ -1682,6 +1682,9 @@ static int wsa_macro_spk_boost_event(struct snd_soc_dapm_widget *w,
 		boost_path_cfg1 = CDC_WSA_RX1_RX_PATH_CFG1;
 		reg = CDC_WSA_RX1_RX_PATH_CTL;
 		reg_mix = CDC_WSA_RX1_RX_PATH_MIX_CTL;
+	} else {
+		dev_warn(component->dev, "Incorrect widget name in the driver\n");
+		return -EINVAL;
 	}
 
 	switch (event) {