linux-kernel - Re: [PATCH 4/4] [NOT FOR UPSTREAM] firmware: arm

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Message-ID: <aAE0peT-Fk7TZGGo@hovoldconsulting.com>
Date: Thu, 17 Apr 2025 19:04:37 +0200
From: Johan Hovold <johan@...nel.org>
To: quic_sibis@...cinc.com
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	arm-scmi@...r.kernel.org, sudeep.holla@....com,
	james.quinlan@...adcom.com, f.fainelli@...il.com,
	vincent.guittot@...aro.org, peng.fan@....nxp.com,
	michal.simek@....com, dan.carpenter@...aro.org, maz@...nel.org,
	Cristian Marussi <cristian.marussi@....com>
Subject: Re: [PATCH 4/4] [NOT FOR UPSTREAM] firmware: arm_scmi: quirk: Ignore
 FC bit in attributes

Hi Sibi,

On Wed, Apr 16, 2025 at 06:11:54PM +0200, Johan Hovold wrote:

> Interestingly, I'm no longer seeing the crash on x1e without the quirk
> enabled with 6.14 and 6.15-rc2.
> 
> I still hit it immediately with 6.12 and 6.13 when accessing the cpufreq
> sysfs attributes (with patch 1/4 applied):
> 
> 	[   30.663577] arm-scmi arm-scmi.0.auto: timed out in resp(caller: do_xfer+0x164/0x564)
> 
> So presumably something changed in 6.14 that masks the earlier issue
> when falling back to regular messaging.

I just realised that this was due to a local change in the 6.14 and
6.15-rc trees I used for testing. Without it the crash still happens
with 6.15-rc2.

Sorry about the noise.

Johan