ASoC: rt715: fix return value check in rt715_sdw_probe()

In case of error, the function devm_regmap_init() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: d1ede0641b05 ("ASoC: rt715: add RT715 codec driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200117024149.75515-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt715-sdw.c b/sound/soc/codecs/rt715-sdw.c
index 18868e4..6d892c4 100644 (file)
--- a/sound/soc/codecs/rt715-sdw.c
+++ b/sound/soc/codecs/rt715-sdw.c
@@ -535,8 +535,8 @@ static int rt715_sdw_probe(struct sdw_slave *slave,
 
        regmap = devm_regmap_init(&slave->dev, NULL, &slave->dev,
                &rt715_regmap);
-       if (!regmap)
-               return -EINVAL;
+       if (IS_ERR(regmap))
+               return PTR_ERR(regmap);
 
        rt715_init(&slave->dev, sdw_regmap, regmap, slave);