Linux GPIO subsystem development
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From: Benjamin Boortz <bennib@mailbox.org>
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: linusw@kernel.org, andy.shevchenko@gmail.com, lee@kernel.org,
	 vladimir.oltean@nxp.com, colin.foster@in-advantage.com,
	linux-gpio@vger.kernel.org,  linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, Andy Shevchenko <andy@kernel.org>
Subject: Re: [PATCH v2] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO
Date: Sun, 19 Jul 2026 17:00:05 +0200	[thread overview]
Message-ID: <alzlLy15fAFPuLSz@bb-82jq> (raw)
In-Reply-To: <alydngVPPaqCoaw9@ashevche-desk.local>

On Sun, Jul 19, 2026 at 12:49:18PM +0300, Andy Shevchenko wrote:

>On Sun, Jul 19, 2026 at 11:41:46AM +0200, Benjamin Boortz wrote:
>> The driver calls ocelot_regmap_from_resource() via <linux/mfd/ocelot.h>,
>> which internally uses devm_regmap_init_mmio() and requires REGMAP_MMIO.
>> The Kconfig entry does not select REGMAP_MMIO, causing a build failure
>> when no other driver in the config happens to pull in REGMAP_MMIO:
>>
>>   include/linux/mfd/ocelot.h:34:24: error: implicit declaration of function 'devm_regmap_init_mmio'
>>
>> Found by randconfig testing on arm64; tinyconfig reproducer below.
>>
>> Fixes: 2afbbab45c26 ("pinctrl: microchip-sgpio: update to support regmap")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Benjamin Boortz <bennib@mailbox.org>
>> Reviewed-by: Andy Shevchenko <andy@kernel.org>
>> ---
>
>This is v2. It misses a changelog here.
>
>No need to resend _this_ time, just reply to this query with
>what has been changed v1..v2.
>
>-- 
>With Best Regards,
>Andy Shevchenko
>
>

Changes in v2:
- Reduced error block to one most significant line
- Fixed Fixes: tag to 2afbbab45c26 ("pinctrl: microchip-sgpio: update to support regmap")
- Added Reviewed-by 

BR,
Benni Boortz

      reply	other threads:[~2026-07-19 15:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-19  9:41 [PATCH v2] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO Benjamin Boortz
2026-07-19  9:49 ` Andy Shevchenko
2026-07-19 15:00   ` Benjamin Boortz [this message]

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