linux-kernel - Re: [PATCH v2 2/3] mfd: syscon: Remove the platform driver support

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Message-ID: <3c52d18c-e4df-4879-86ba-0c7e4fdc13d1@linaro.org>
Date: Mon, 23 Dec 2024 15:59:35 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: "Rob Herring (Arm)" <robh@...nel.org>, Lee Jones <lee@...nel.org>,
 Arnd Bergmann <arnd@...db.de>, Pankaj Dubey <pankaj.dubey@...sung.com>,
 Heiko Stuebner <heiko@...ech.de>, Liviu Dudau <liviu.dudau@....com>,
 Sudeep Holla <sudeep.holla@....com>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc: Peter Griffin <peter.griffin@...aro.org>,
 Will McVicker <willmcvicker@...gle.com>,
 John Madieu <john.madieu.xa@...renesas.com>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] mfd: syscon: Remove the platform driver support

On 17/12/2024 19:11, Rob Herring (Arm) wrote:
> The platform driver is dead code. It is not used by DT platforms since
> commit bdb0066df96e ("mfd: syscon: Decouple syscon interface from
> platform devices") which said:
> 
>     For non-DT based platforms, this patch keeps syscon platform driver
>     structure so that syscon can be probed and such non-DT based drivers
>     can use syscon_regmap_lookup_by_pdev API and access regmap handles.
>     Once all users of "syscon_regmap_lookup_by_pdev" migrated to DT based,
>     we can completely remove platform driver of syscon, and keep only helper
>     functions to get regmap handles.
> 
> The last user of syscon_regmap_lookup_by_pdevname() was removed in 2018.
> syscon_regmap_lookup_by_pdevname() was then removed in 2019, but that
> commit failed to remove the rest of the platform driver.
> 
> Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
> ---


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof