firmware: arm_scmi: Unwind P2A receiver mailbox setup failure

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mailbox_chan_setup() can request an additional P2A receiver channel after
successfully acquiring the primary P2A channel. If that later request
fails, the function returns immediately and leaves the primary channel
allocated.

Unwind the primary mailbox channel before returning the error so probe
deferral or other setup failures do not leave the channel busy for later
probe attempts.

Fixes: fa8b28ba22 ("firmware: arm_scmi: Add support for platform to agent channel completion")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://patch.msgid.link/20260714-scmi_core_fixes-v6-14-3afe499d46e3@kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>

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Sudeep Holla 2026-07-14 13:56:33 +01:00

parent 6f7c06744d

commit f3e3773c4e

1 changed files with 2 additions and 1 deletions

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drivers/firmware/arm_scmi/transports/mailbox.c

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