Re: [PATCH 1/3] video: fbdev: vt8623fb: suppress build warning

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On 27/11/14 00:07, Lad, Prabhakar wrote:
> this patch fixes following build warning:
> drivers/video/fbdev/vt8623fb.c: In function ‘vt8623_pci_probe’:
> drivers/video/fbdev/vt8623fb.c:734:23: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>   par->state.vgabase = (void __iomem *) vga_res.start;
>                        ^
> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
> ---
>  drivers/video/fbdev/vt8623fb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/fbdev/vt8623fb.c b/drivers/video/fbdev/vt8623fb.c
> index 5c7cbc6..ea7f056 100644
> --- a/drivers/video/fbdev/vt8623fb.c
> +++ b/drivers/video/fbdev/vt8623fb.c
> @@ -731,7 +731,7 @@ static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
>  
>  	pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg);
>  
> -	par->state.vgabase = (void __iomem *) vga_res.start;
> +	par->state.vgabase = (void __iomem *) (unsigned long) vga_res.start;

This does look quite ugly... Where does the warning come from in the
first place. Isn't vga_res.start (resource_size_t) the size of a pointer?

 Tomi


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