linux-kernel - Re: [PATCH 3/4] mmc: jz4740: Fix Wvoid-pointer-to-enum-cast warning

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Message-ID: <e661a947f0cefb1651dcd3f7f57855313ad9fd7a.camel@crapouillou.net>
Date: Wed, 24 Dec 2025 14:30:56 +0100
From: Paul Cercueil <paul@...pouillou.net>
To: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>, Aubin
 Constans <aubin.constans@...rochip.com>, Ulf Hansson
 <ulf.hansson@...aro.org>, Nicolas Ferre	 <nicolas.ferre@...rochip.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,  Claudiu Beznea
 <claudiu.beznea@...on.dev>, Robert Richter <rric@...nel.org>, Andrew
 Jeffery	 <andrew@...econstruct.com.au>, Adrian Hunter
 <adrian.hunter@...el.com>, Joel Stanley <joel@....id.au>, Nathan Chancellor
 <nathan@...nel.org>, Nick Desaulniers	 <nick.desaulniers+lkml@...il.com>,
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 linux-mmc@...r.kernel.org, 	linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, 	linux-mips@...r.kernel.org,
 linux-aspeed@...ts.ozlabs.org, 	openbmc@...ts.ozlabs.org,
 llvm@...ts.linux.dev
Subject: Re: [PATCH 3/4] mmc: jz4740: Fix Wvoid-pointer-to-enum-cast warning

Hi Krzysztof,

Le mercredi 24 décembre 2025 à 13:44 +0100, Krzysztof Kozlowski a
écrit :
> "jz4740" is an enum, thus cast of pointer on 64-bit compile test with
> clang W=1 causes:
> 
>   jz4740_mmc.c:1055:18: error: cast to smaller integer type 'enum
> jz4740_mmc_version' from 'const void *' [-Werror,-Wvoid-pointer-to-
> enum-cast]
> 
> Signed-off-by: Krzysztof Kozlowski
> <krzysztof.kozlowski@....qualcomm.com>

Reviewed-by: Paul Cercueil <paul@...pouillou.net>

Cheers,
-Paul

> ---
>  drivers/mmc/host/jz4740_mmc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/jz4740_mmc.c
> b/drivers/mmc/host/jz4740_mmc.c
> index 6a0d0250d47b..6a3c26b7c82d 100644
> --- a/drivers/mmc/host/jz4740_mmc.c
> +++ b/drivers/mmc/host/jz4740_mmc.c
> @@ -1052,7 +1052,7 @@ static int jz4740_mmc_probe(struct
> platform_device* pdev)
>  	host = mmc_priv(mmc);
>  
>  	/* Default if no match is JZ4740 */
> -	host->version = (enum
> jz4740_mmc_version)device_get_match_data(&pdev->dev);
> +	host->version = (unsigned long)device_get_match_data(&pdev-
> >dev);
>  
>  	ret = mmc_of_parse(mmc);
>  	if (ret)