[PATCH V3 1/4] firmware: arm_scmi: Ensure that the message-id supports fastchannel

[Johan Hovold]

On Mon, Oct 07, 2024 at 11:36:39AM +0530, Sibi Sankar wrote:
> Currently the perf and powercap protocol relies on the protocol domain
> attributes, which just ensures that one fastchannel per domain, before
> instantiating fastchannels for all possible message-ids. Fix this by
> ensuring that each message-id supports fastchannel before initialization.

Perhaps you could include the error message I reported here so that
anyone searching for that error will find this fix more easily.

> Reported-by: Johan Hovold <johan+linaro at kernel.org>
> Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
> Fixes: 6f9ea4dabd2d ("firmware: arm_scmi: Generalize the fast channel support")
> Signed-off-by: Sibi Sankar <quic_sibis at quicinc.com>

Do we want this to be backported as well so that you should add a
CC-stable tag?

Either way, this does seem to address the FC errors I reported:

Tested-by: Johan Hovold <johan+linaro at kernel.org>

Johan