ASoC: ssm2518: Use a signed return type for ssm2518_lookup_mcs()

The return type "unsigned int" was used by the ssm2518_lookup_mcs()
function even though it will eventually return a negative error code.
Improve this implementation detail by deletion of the type modifier then.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/soc/codecs/ssm2518.c b/sound/soc/codecs/ssm2518.c
index 86b81a60ac52..e2e0bfa7ec20 100644
--- a/sound/soc/codecs/ssm2518.c
+++ b/sound/soc/codecs/ssm2518.c
@@ -309,7 +309,7 @@ static const struct snd_pcm_hw_constraint_list ssm2518_constraints_12288000 = {
         .count = ARRAY_SIZE(ssm2518_rates_12288000),
 };
 
-static unsigned int ssm2518_lookup_mcs(struct ssm2518 *ssm2518,
+static int ssm2518_lookup_mcs(struct ssm2518 *ssm2518,
         unsigned int rate)
 {
         const unsigned int *sysclks = NULL;