From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit aa505ecccf2ae7546e0e262d574e18a9241f3005 ]
Since the potential failure of the devm_regmap_init_mmio(), it will return error pointer and be assigned to the regmap. 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 Link: https://lore.kernel.org/r/20220121171031.2826198-1-jiasheng@iscas.ac.cn Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.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 6ffe88345de5..2b272a82eabf 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 a4c0a155af56..9c96ab1bf84f 100644 --- a/sound/soc/codecs/lpass-tx-macro.c +++ b/sound/soc/codecs/lpass-tx-macro.c @@ -1821,6 +1821,8 @@ static int tx_macro_probe(struct platform_device *pdev) }
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 75baf8eb7029..69d2915f40d8 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);