Re: [PATCH 2/6] soundwire: stream: update state machine and add state checks

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On 1/10/20 10:30 AM, Pierre-Louis Bossart wrote:

-  int sdw_prepare_stream(struct sdw_stream_runtime * stream);
+  int sdw_prepare_stream(struct sdw_stream_runtime * stream, bool resume);

so what does the additional argument of resume do..?

diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 178ae92b8cc1..6aa0b5d370c0 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -1553,8 +1553,18 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)

and it is not modified here, so is the doc correct or this..?

the doc is correct and the code is updated in

[PATCH 4/6] soundwire: stream: do not update parameters during DISABLED-PREPARED transition

Sorry, wrong answer, my bad. The code block in the documentation is incorrect.

The Patch 4/6 implements the transition mentioned in the documentation, but the extra parameter is a left-over from an earlier version. This case is now handled internally. We did revert to the initial prototype after finding out that dealing with transitions in the caller is error-prone.

Will fix in v2, thanks for spotting this.
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