linux-kernel - Re: [PATCH v2] nvmem: meson-efuse: fix function pointer type mismatch

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Date: Tue, 13 Feb 2024 15:59:39 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: "Jerome Brunet" <jbrunet@...libre.com>,
 "Srinivas Kandagatla" <srinivas.kandagatla@...aro.org>
Cc: "Neil Armstrong" <neil.armstrong@...aro.org>,
 "Kevin Hilman" <khilman@...libre.com>,
 "Martin Blumenstingl" <martin.blumenstingl@...glemail.com>,
 "Nathan Chancellor" <nathan@...nel.org>,
 "Nick Desaulniers" <ndesaulniers@...gle.com>,
 "Bill Wendling" <morbo@...gle.com>, "Justin Stitt" <justinstitt@...gle.com>,
 "Jernej Skrabec" <jernej.skrabec@...il.com>,
 linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org,
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH v2] nvmem: meson-efuse: fix function pointer type mismatch

On Tue, Feb 13, 2024, at 15:28, Jerome Brunet wrote:
> clang-16 warns about casting functions to incompatible types, as is done
> here to call clk_disable_unprepare:
>
> drivers/nvmem/meson-efuse.c:78:12: error: cast from 'void (*)(struct 
> clk *)' to 'void (*)(void *)' converts to incompatible function type 
> [-Werror,-Wcast-function-type-strict]
>    78 |                                        (void(*)(void 
> *))clk_disable_unprepare,
>
> The pattern of getting, enabling and setting a disable callback for a
> clock can be replaced with devm_clk_get_enabled(), which also fixes
> this warning.
>
> Fixes: 611fbca1c861 ("nvmem: meson-efuse: add peripheral clock")
> Reported-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>

Perfect, much nicer than my version.

Acked-by: Arnd Bergmann <arnd@...db.de>