ASoC: SOF: ipc3-dtrace: Handle race during initialization

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Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

This series handles the race which can result missing the first position update
after the trace is enabled.
In short: the firmware might send the position update (if we have enough
trace data generated) after the dma-trace is enabled by the TRACE_DMA_PARAMS_EXT
message. Depending on scheduling, load, preemption on Linux side we have seen
that occasionally this first position update got missed and we missed reading it
out.

A new state and more strict handling of host_offset can overcome this issue,
making the dtrace more reliable.

...

This commit is contained in:

Mark Brown 2022-06-10 17:21:29 +01:00

parent c5d41ca7b2 1e90de2c9a

commit 25ebeeebcb

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1 changed files with 38 additions and 9 deletions

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sound/soc/sof/ipc3-dtrace.c

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