linux-kernel - Re: [PATCH 1/2] drm/bridge: adv7511: fix Wvoid-pointer-to-enum-cast warning

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Date:   Thu, 10 Aug 2023 13:12:03 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, Qiang Yu <yuq825@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        lima@...ts.freedesktop.org, Andi Shyti <andi.shyti@...nel.org>
Subject: Re: [PATCH 1/2] drm/bridge: adv7511: fix Wvoid-pointer-to-enum-cast
 warning

Hi Krzysztof,

Thank you for the patch.

On Thu, Aug 10, 2023 at 11:59:22AM +0200, Krzysztof Kozlowski wrote:
> 'type' is an enum, thus cast of pointer on 64-bit compile test with W=1
> causes:
> 
>   adv7511_drv.c:1214:19: error: cast to smaller integer type 'enum adv7511_type' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

> ---
>  drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> index 2611afd2c1c1..0e284f379602 100644
> --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> @@ -1211,7 +1211,7 @@ static int adv7511_probe(struct i2c_client *i2c)
>  	adv7511->status = connector_status_disconnected;
>  
>  	if (dev->of_node)
> -		adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
> +		adv7511->type = (uintptr_t)of_device_get_match_data(dev);
>  	else
>  		adv7511->type = id->driver_data;
>  

-- 
Regards,

Laurent Pinchart