On 11/01/2022 01:32, Jiasheng Jiang wrote:
The devm_regmap_init_mmio() may return error pointer under certain circumstances, for example the possible failure of the kzalloc() in regmap_mmio_gen_context(), which is called by devm_regmap_init_mmio(). Then the error pointer will be dereferenced. For example rx->regmap will be used in rx_macro_mclk_enable(). Therefore, it should be better to check it.
Fixes: af3d54b99764 ("ASoC: codecs: lpass-rx-macro: add support for lpass rx macro") Fixes: c39667ddcfc5 ("ASoC: codecs: lpass-tx-macro: add support for lpass tx macro") Fixes: 809bcbcecebf ("ASoC: codecs: lpass-wsa-macro: Add support to WSA Macro") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn
Thanks for the patch,
LGTM,
Reviewed-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org
sound/soc/codecs/lpass-rx-macro.c | 2 ++ sound/soc/codecs/lpass-tx-macro.c | 2 ++ sound/soc/codecs/lpass-wsa-macro.c | 2 ++ 3 files changed, 6 insertions(+)
diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c index 07894ec5e7a6..2adbf2e2697f 100644 --- a/sound/soc/codecs/lpass-rx-macro.c +++ b/sound/soc/codecs/lpass-rx-macro.c @@ -3542,6 +3542,8 @@ static int rx_macro_probe(struct platform_device *pdev) return PTR_ERR(base);
rx->regmap = devm_regmap_init_mmio(dev, base, &rx_regmap_config);
if (IS_ERR(rx->regmap))
return PTR_ERR(rx->regmap);dev_set_drvdata(dev, rx);
diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c index 27a0d5defd27..e4bbc6bd4925 100644 --- a/sound/soc/codecs/lpass-tx-macro.c +++ b/sound/soc/codecs/lpass-tx-macro.c @@ -1803,6 +1803,8 @@ static int tx_macro_probe(struct platform_device *pdev) return PTR_ERR(base);
tx->regmap = devm_regmap_init_mmio(dev, base, &tx_regmap_config);
if (IS_ERR(tx->regmap))
return PTR_ERR(tx->regmap);dev_set_drvdata(dev, tx);
diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c index d3ac318fd6b6..dd1a8b7bc794 100644 --- a/sound/soc/codecs/lpass-wsa-macro.c +++ b/sound/soc/codecs/lpass-wsa-macro.c @@ -2405,6 +2405,8 @@ static int wsa_macro_probe(struct platform_device *pdev) return PTR_ERR(base);
wsa->regmap = devm_regmap_init_mmio(dev, base, &wsa_regmap_config);
if (IS_ERR(wsa->regmap))
return PTR_ERR(wsa->regmap);dev_set_drvdata(dev, wsa);