[PATCH V4 1/4] firmware: arm_scmi: Ensure that the message-id supports fastchannel

[Johan Hovold]

On Wed, Oct 23, 2024 at 03:51:45PM +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.

Again, 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")

And, also again, should you add a CC-stable tag here to get this
backported?

> Signed-off-by: Sibi Sankar <quic_sibis at quicinc.com>
> Reviewed-by: Sudeep Holla <sudeep.holla at arm.com>
> Tested-by: Johan Hovold <johan+linaro at kernel.org>
> ---
> 
> v3:
> * Pick up R-b, T-b from the list.
> * Move scmi_protocol_msg_check to the top [Sudeep]

Johan