ASoC: rt700: Fix return check for devm_regmap_init_sdw()

devm_regmap_init_sdw() returns a valid pointer on success or ERR_PTR on
failure which should be checked with IS_ERR. Also use PTR_ERR for
returning error codes.

Reported-by: Takashi Iwai <tiwai@suse.de>
Fixes: 7d2a5f9ae41e ("ASoC: rt700: add rt700 codec driver")
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200826163340.3249608-6-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt700-sdw.c b/sound/soc/codecs/rt700-sdw.c
index 4d14048..1d24bf0 100644 (file)
--- a/sound/soc/codecs/rt700-sdw.c
+++ b/sound/soc/codecs/rt700-sdw.c
@@ -452,8 +452,8 @@ static int rt700_sdw_probe(struct sdw_slave *slave,
 
        /* Regmap Initialization */
        sdw_regmap = devm_regmap_init_sdw(slave, &rt700_sdw_regmap);
-       if (!sdw_regmap)
-               return -EINVAL;
+       if (IS_ERR(sdw_regmap))
+               return PTR_ERR(sdw_regmap);
 
        regmap = devm_regmap_init(&slave->dev, NULL,
                &slave->dev, &rt700_regmap);