ASoC: fsl: fsl_qmc_audio: Reset audio data pointers on TRIGGER_START event

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commit 9aa33d5b4a upstream.

On SNDRV_PCM_TRIGGER_START event, audio data pointers are not reset.

This leads to wrong data buffer usage when multiple TRIGGER_START are
received and ends to incorrect buffer usage between the user-space and
the driver. Indeed, the driver can read data that are not already set by
the user-space or the user-space and the driver are writing and reading
the same area.

Fix that resetting data pointers on each SNDRV_PCM_TRIGGER_START events.

Fixes: 075c7125b1 ("ASoC: fsl: Add support for QMC audio")
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20250410091643.535627-1-herve.codina@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Herve Codina 2025-04-10 11:16:43 +02:00 • committed by Greg Kroah-Hartman

parent f2e2926e9e

commit b2e56391f6

1 changed files with 3 additions and 0 deletions

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sound/soc/fsl/fsl_qmc_audio.c

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