[PATCH] drm/amdgpu/display: Use u64 divide macro for round up division

[Ville Syrjälä]

On Mon, Jan 13, 2020 at 08:20:42AM -0500, mikita.lipski at amd.com wrote:
> From: Mikita Lipski <mikita.lipski at amd.com>
> 
> [why]
> Fix compilation warnings on i386 architecture:
> undefined reference to `__udivdi3'
> [how]
> Switch DIV_ROUND_UP to DIV64_U64_ROUND_UP
> 
> Reported-by: Randy Dunlap <rdunlap at infradead.org>
> Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> index 52fb207393ef..96b391e4b3e7 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> @@ -534,7 +534,7 @@ static int kbps_to_peak_pbn(int kbps)
>  
>  	peak_kbps *= 1006;
>  	peak_kbps = div_u64(peak_kbps, 1000);
> -	return (int) DIV_ROUND_UP(peak_kbps * 64, (54 * 8 * 1000));
> +	return (int) DIV64_U64_ROUND_UP(peak_kbps * 64, (54 * 8 * 1000));

DIV_ROUND_UP_ULL() would seem to suffice for this divisor.

>  }
>  
>  static void set_dsc_configs_from_fairness_vars(struct dsc_mst_fairness_params *params,
> -- 
> 2.17.1
> 
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-- 
Ville Syrjälä
Intel