linux-kernel - Re: [PATCH v3 2/3] firmware: arm

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Message-ID: <868qnhj2yf.wl-maz@kernel.org>
Date: Wed, 30 Apr 2025 12:36:40 +0100
From: Marc Zyngier <maz@...nel.org>
To: Cristian Marussi <cristian.marussi@....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,
	quic_sibis@...cinc.com,
	dan.carpenter@...aro.org,
	johan@...nel.org,
	Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [PATCH v3 2/3] firmware: arm_scmi: Add Quirks framework

On Wed, 30 Apr 2025 08:54:06 +0100,
Cristian Marussi <cristian.marussi@....com> wrote:
> 
> On Tue, Apr 29, 2025 at 03:11:07PM +0100, Cristian Marussi wrote:
> > Add a common framework to describe SCMI quirks and associate them with a
> > specific platform or a specific set of SCMI firmware versions.
> > 
> > All the matching SCMI quirks will be enabled when the SCMI core stack
> > probes and after all the needed SCMI firmware versioning information was
> > retrieved using Base protocol.
> > 
> > Tested-by: Johan Hovold <johan+linaro@...nel.org>
> > Signed-off-by: Cristian Marussi <cristian.marussi@....com>
> 
> Hi
> 
> just a quick remarks that a bot spotted the usage of __VA_OPT__ which is
> only available since GCC >= 8.0 :< ... so I will probably revert to use the
> previous, less clean, mechanism to build the NULL terminated array in
> which the compats array WILL HAVE to be explicitly NULL terminated when
> provided (even the empty ones...)

See 20250407094116.1339199-1-arnd@...nel.org, which is slated for
6.16. The TL;DR is that GCC 8.1 and binutils 2.30 should be the
minimal versions from 6.16 onwards.

So it's probably not worth using ugly hacks that will eventually be
reverted.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.