[Intel-gfx] [PATCH 07/11] drm/i915: also do frontbuffer tracking on pwrites

[Daniel Vetter]

On Mon, Dec 08, 2014 at 02:09:16PM -0200, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
> 
> We need this for FBC, and possibly for PSR too.
> 
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

Hm, this might fix some cursor update failures if userspace only pwrites
and doesn't follow suite with a cursor ioctl update call. Not sure this
ever happens, but definitely makes sense.
-Daniel

> ---
>  drivers/gpu/drm/i915/i915_gem.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 7ef12e8..b8c906e 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -1117,6 +1117,10 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
>  			ret = i915_gem_phys_pwrite(obj, args, file);
>  		else
>  			ret = i915_gem_shmem_pwrite(dev, obj, args, file);
> +
> +		intel_fb_obj_flush(obj, false, ORIGIN_CPU);
> +	} else {
> +		intel_fb_obj_flush(obj, false, ORIGIN_GTT);
>  	}
>  
>  out:
> -- 
> 2.1.3
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch