linux-kernel - Re: [PATCH] firmware: smccc: default ARM_SMCCC_SOC

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Message-ID: <aWgFfUug5nVY5rQQ@bogus>
Date: Wed, 14 Jan 2026 21:07:09 +0000
From: Sudeep Holla <sudeep.holla@....com>
To: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
Cc: Satya Durga Srinivasu Prabhala <satya.prabhala@....qualcomm.com>,
	Mark Rutland <mark.rutland@....com>,
	Sudeep Holla <sudeep.holla@....com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, trilok.soni@....qualcomm.com
Subject: Re: [PATCH] firmware: smccc: default ARM_SMCCC_SOC_ID to disabled

On Tue, Jan 13, 2026 at 01:34:05PM +0530, Mukesh Ojha wrote:
> On Mon, Jan 12, 2026 at 10:24:06PM -0800, Satya Durga Srinivasu Prabhala wrote:
> > The ARM SMCCC SoC ID driver is currently enabled by default and publishes
> > SMCCC-provided SoC identification into /sys/bus/soc/devices/socX/*.
> > 
> > On platforms where a vendor SoC driver already exposes widely-consumed
> > attributes (e.g. Qualcomm socinfo [1]), enabling the SMCCC driver changes
> > the format of /sys/devices/soc0/soc_id (e.g. "jep106:XXYY:ZZZZ" instead
> > of a vendor logical ID like "519") and breaks existing userspace consumers.
> > 
> > Flip the default of CONFIG_ARM_SMCCC_SOC_ID from y to n. Platforms that
> > prefer SMCCC over a vendor driver can explicitly enable it.
> > 
> > This avoids unexpected format changes and keeps the generic SoC sysfs
> > stable on systems that rely on vendor-specific identification.
> > 
> > [1]
> > Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/soc/qcom/socinfo.c
> > 
> > Signed-off-by: Satya Durga Srinivasu Prabhala <satya.prabhala@....qualcomm.com>
> 
> Fixes tag ??
> 

Sorry which commit is broken ?

-- 
Regards,
Sudeep