[PATCH] drm/v3d: fix wait for TMU write combiner flush

[Melissa Wen]

On 09/14, Iago Toral Quiroga wrote:
> The hardware sets the TMUWCF bit back to 0 when the TMU write
> combiner flush completes so we should be checking for that instead
> of the L2TFLS bit.
> 
> Fixes spurious Vulkan CTS failures in:
> dEQP-VK.binding_model.descriptorset_random.*
Hi Iago,

makes sense to me.

can you add the fix tag?
Fixes: d223f98f02099 ("drm/v3d: Add support for compute shader dispatch") 

also, you forgot to add your Signed-off-by tag.
> ---
>  drivers/gpu/drm/v3d/v3d_gem.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
> index a3529809d547..5159f544bc16 100644
> --- a/drivers/gpu/drm/v3d/v3d_gem.c
> +++ b/drivers/gpu/drm/v3d/v3d_gem.c
> @@ -197,7 +197,7 @@ v3d_clean_caches(struct v3d_dev *v3d)
>  
>  	V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL, V3D_L2TCACTL_TMUWCF);
>  	if (wait_for(!(V3D_CORE_READ(core, V3D_CTL_L2TCACTL) &
> -		       V3D_L2TCACTL_L2TFLS), 100)) {
> +		       V3D_L2TCACTL_TMUWCF), 100)) {
>  		DRM_ERROR("Timeout waiting for L1T write combiner flush\n");
hm.. would it be clearer to say "TMU write combiner" here?

in the next version, you can already include:
Reviewed-by: Melissa Wen <mwen at igalia.com>

Thanks,

Melissa
>  	}
>  
> -- 
> 2.25.1
> 
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