Re: [PATCH v4 20/25] dmaengine: sdxi: Add client context release with update and sync

[sashiko-bot@kernel.org]

> From: Nathan Lynch <nathan.lynch@amd.com>
> 
> Invalidate an unused, stopped client context and synchronize hardware
> caches before freeing its resources. Add administrative update, reservation, and
> completion-polling helpers.
> 
> Claim completion-status storage before making an irrevocable ring
> reservation. Return the claim if reservation fails, and release it after
> consuming a terminal result. A timeout leaves hardware ownership
> unresolved, so retain that block in the administrative pool until context
> teardown, even if the device writes its terminal signal later. Repeated
> timeouts can exhaust the pool, causing further claims to time out rather
> than reuse outstanding status blocks.
> 
> If update or synchronization fails, retain the context and its ID for
> cleanup after function shutdown. Device-wide teardown frees clients after
> the best-effort function stop/reset path without submitting additional
> administrative operations.
> 
> Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>

Sashiko has reviewed this patch and found no issues.

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