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Subject[PATCH AUTOSEL 4.14 018/103] ASoC: dpcm: Properly initialise hw->rate_max
Date
From: Charles Keepax <ckeepax@opensource.cirrus.com>

[ Upstream commit e33ffbd9cd39da09831ce62c11025d830bf78d9e ]

If the CPU DAI does not initialise rate_max, say if using
using KNOT or CONTINUOUS, then the rate_max field will be
initialised to 0. A value of zero in the rate_max field of
the hardware runtime will cause the sound card to support no
sample rates at all. Obviously this is not desired, just a
different mechanism is being used to apply the constraints. As
such update the setting of rate_max in dpcm_init_runtime_hw
to be consistent with the non-DPCM cases and set rate_max to
UINT_MAX if nothing is defined on the CPU DAI.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/soc-pcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 052b6294a4283..24047375c2fbb 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1578,7 +1578,7 @@ static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
u64 formats)
{
runtime->hw.rate_min = stream->rate_min;
- runtime->hw.rate_max = stream->rate_max;
+ runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX);
runtime->hw.channels_min = stream->channels_min;
runtime->hw.channels_max = stream->channels_max;
if (runtime->hw.formats)
--
2.20.1
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