ASoC: SOF: Intel: hda-pcm: Place the constraint on period time instead of buffer time

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[ Upstream commit 45ad27d9a6 ]

Instead of constraining the ALSA buffer time to be double of the firmware
host buffer size, it is better to set it for the period time.
This will implicitly constrain the buffer time to a safe value
(num_periods is at least 2) and prohibits applications to set smaller
period size than what will be covered by the initial DMA burst.

Fixes: fe76d2e75a ("ASoC: SOF: Intel: hda-pcm: Use dsp_max_burst_size_in_ms to place constraint")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20251002135752.2430-4-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Peter Ujfalusi 2025-10-02 16:57:52 +03:00 • committed by Greg Kroah-Hartman

parent a41a9d0a5b

commit eb6cd53402

1 changed files with 21 additions and 8 deletions

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sound/soc/sof/intel/hda-pcm.c

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