Re: [PATCH] firmware: arm_scmi: Fix timeout checks on polling path

On Mon, 10 Mar 2025 17:58:00 +0000, Cristian Marussi wrote:

Polling mode transactions wait for a reply busy-looping without holding a spinlock, but currently the timeout checks are based only on elapsed time: as a result we could hit a false positive whenever our busy-looping thread is pre-empted and scheduled out for a time greater than the polling timeout.

Change the checks at the end of the busy-loop to make sure that the polling wasn't indeed successful or an out-of-order reply caused the polling to be forcibly terminated.

[...]

Applied to sudeep.holla/linux (for-next/scmi/fixes), thanks!

[1/1] firmware: arm_scmi: Fix timeout checks on polling path https://git.kernel.org/sudeep.holla/c/c23c03bf1faa -- Regards, Sudeep