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2c92e2fbe9
The copied_total field in struct snd_compr_tstamp is a 32-bit value that can overflow on long-running high-bitrate streams, leading to incorrect calculations for buffer availablility. This patch adds a 64-bit safe timestamping mechanism. A new UAPI struct, snd_compr_tstamp64, is added which uses 64-bit types for byte counters. The relevant ops structures across the ASoC and core compress code are updated to use this new struct. ASoC drivers are updated to use u64 counters. Internal timestamps being u64 now, a compatibility function is added to convert the 64-bit timestamp back to the 32-bit format for legacy ioctl callers. Reviewed-by: Miller Liang <millerliang@google.com> Tested-by: Joris Verhaegen <verhaegen@google.com> Signed-off-by: Joris Verhaegen <verhaegen@google.com> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20250905091301.2711705-2-verhaegen@google.com |
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