On Wed, May 25, 2022 at 04:29:25PM +0200, David Jander wrote: > Unfortunately though, this optimization requires a small and hopefully > innocuous API change. This change is contained in the first patch, and > it replaces the function spi_finalize_current_message() with > spi_finalize_message(), which takes the message instead of its > controller as argument. Without this change, it is not possible to avoid > touching the controller message queue, which is what this is all about. You're right it needs at least a bit of thought here - unfortunately I'm out of the office this week so I'm not sure I'll have bandwidth to review this properly until next week.
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