linux-kernel - Re: [PATCH] video: fbdev: atmel: fix warning for const return value

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Date:	Mon, 27 Jul 2015 17:49:44 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Rob Herring <robh@...nel.org>,
	Tomi Valkeinen <tomi.valkeinen@...com>
CC:	<linux-kernel@...r.kernel.org>, <linux-fbdev@...r.kernel.org>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Subject: Re: [PATCH] video: fbdev: atmel: fix warning for const return value

Le 27/07/2015 17:41, Rob Herring a écrit :
> A const on a return value is meaningless and generates a warning on some
> versions of gcc:
> 
> drivers/video/fbdev/atmel_lcdfb.c:1003: warning: type qualifiers ignored on function return type
> 
> This was found on 0-day with avr32 builds with CONFIG_OF enabled, but
> it doesn't seem to generate warnings for other arches.
> 
> Reported-by: Fengguang Wu <fengguang.wu@...el.com>
> Signed-off-by: Rob Herring <robh@...nel.org>
> Cc: Nicolas Ferre <nicolas.ferre@...el.com>

Sure:
Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>

Thanks Rob!

> Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
> Cc: Tomi Valkeinen <tomi.valkeinen@...com>
> ---
>  drivers/video/fbdev/atmel_lcdfb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
> index abadc49..66f4b70 100644
> --- a/drivers/video/fbdev/atmel_lcdfb.c
> +++ b/drivers/video/fbdev/atmel_lcdfb.c
> @@ -999,7 +999,7 @@ static const char *atmel_lcdfb_wiring_modes[] = {
>  	[ATMEL_LCDC_WIRING_RGB]	= "RGB",
>  };
>  
> -const int atmel_lcdfb_get_of_wiring_modes(struct device_node *np)
> +int atmel_lcdfb_get_of_wiring_modes(struct device_node *np)
>  {
>  	const char *mode;
>  	int err, i;
> 


-- 
Nicolas Ferre
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