[PATCH] ASoC: simple-card-utils: fix PCM constraint error check
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 --- sound/soc/generic/simple-card-utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 467edd96eae5..e5ff61c1e9d1 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -314,7 +314,7 @@ 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; }
On Thu, 01 Jun 2023 19:19:35 -0600, Robert Hancock wrote:
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.
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: simple-card-utils: fix PCM constraint error check commit: 635071f5fee31550e921644b2becc42b3ff1036c
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
participants (2)
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Mark Brown -
Robert Hancock