[PATCH 5.10 455/491] ASoC: tegra: Fix Master Volume Control

Greg Kroah-Hartman
2026-04-13T17:03:03Z

From: Jon Hunter <jonathanh@nvidia.com>

commit f9fd804aa0a36f15a35ca070ec4c52650876cc29 upstream.

Commit 3ed2b549b39f ("ALSA: pcm: fix wait_time calculations") corrected
the PCM wait_time calculations and in doing so reduced the calculated
wait_time. This exposed an issue with the Tegra Master Volume Control
(MVC) device where the reduced wait_time caused the MVC to fail. For now
fix this by setting the default wait_time for Tegra to be 500ms.

Fixes: 3ed2b549b39f ("ALSA: pcm: fix wait_time calculations")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230613093453.13927-1-jonathanh@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/tegra/tegra_pcm.c | 3 +++
1 file changed, 3 insertions(+)

--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -111,6 +111,9 @@ int tegra_pcm_open(struct snd_soc_compon
return ret;
}

+ /* Set wait time to 500ms by default */
+ substream->wait_time = 500;
+
return 0;
}
EXPORT_SYMBOL_GPL(tegra_pcm_open);