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@xxxxxxxxxxx>
---
Changelog
v1 -> v2
* Change 1. Refine the commit message.
v2 -> v3
* Change 1. Make the patch against the latest code.
---
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 aec5127260fd..29d214f784d1 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);
--
2.25.1
