ASoC: simple-card-utils: fix PCM constraint error check

[ Upstream commit 635071f5fee31550e921644b2becc42b3ff1036c ]

The code in asoc_simple_startup was treating any non-zero return from
snd_pcm_hw_constraint_minmax as an error, when this can return 1 in some
normal cases and only negative values indicate an error.

When this happened, it caused asoc_simple_startup to disable the clocks
it just enabled and return 1, which was not treated as an error by the
calling code which only checks for negative return values. Then when the
PCM is eventually shut down, it causes the clock framework to complain
about disabling clocks that were not enabled.

Fix the check for snd_pcm_hw_constraint_minmax return value to only
treat negative values as an error.

Fixes: 5ca2ab459817 ("ASoC: simple-card-utils: Add new system-clock-fixed flag")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20230602011936.231931-1-robert.hancock@calian.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index be69bbc47f8138d1f6561c60b606d0595e624049..8811321717fbb81e0083a633775961da07c81d9a 100644 (file)
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -335,7 +335,7 @@ int asoc_simple_startup(struct snd_pcm_substream *substream)
                }
                ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
                        fixed_rate, fixed_rate);
-               if (ret)
+               if (ret < 0)
                        goto codec_err;
        }