linux-kernel - Re: [PATCH] firmware: arm_scmi: Check Mailbox/SMT channel for consistency

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Message-ID: <170592361006.3509502.11519593066787083768.b4-ty@arm.com>
Date: Mon, 22 Jan 2024 14:41:50 +0000
From: Sudeep Holla <sudeep.holla@....com>
To: linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Cristian Marussi <cristian.marussi@....com>
Cc: Sudeep Holla <sudeep.holla@....com>,
	vincent.guittot@...aro.org,
	Xinglong Yang <xinglong.yang@...tech.com>,
	stable@...r.kernel.org
Subject: Re: [PATCH] firmware: arm_scmi: Check Mailbox/SMT channel for consistency

On Wed, 20 Dec 2023 17:21:12 +0000, Cristian Marussi wrote:
> On reception of a completion interrupt the SMT memory area is accessed to
> retrieve the message header at first and then, if the message sequence
> number identifies a transaction which is still pending, the related
> payload is fetched too.
>
> When an SCMI command times out the channel ownership remains with the
> platform until eventually a late reply is received and, as a consequence,
> any further transmission attempt remains pending, waiting for the channel
> to be relinquished by the platform.
>
> [...]

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

[1/1] firmware: arm_scmi: Check Mailbox/SMT channel for consistency
      https://git.kernel.org/sudeep.holla/c/437a310b2224
--
Regards,
Sudeep