diff mbox

[v2] drm/i915: Reject fence stride=0 on gen4+

Message ID 1365527353-30602-1-git-send-email-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ville Syrjälä April 9, 2013, 5:09 p.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Our checks for an invalid fence stride forgot to guard against
zero stride on gen4+. Fix it.

v2: Avoid duplicated code (danvet)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem_tiling.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Daniel Vetter April 9, 2013, 5:32 p.m. UTC | #1 
On Tue, Apr 09, 2013 at 08:09:13PM +0300, ville.syrjala@linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Our checks for an invalid fence stride forgot to guard against
> zero stride on gen4+. Fix it.
> 
> v2: Avoid duplicated code (danvet)
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Queued for -next, thanks for the patch.
-Daniel
> ---
>  drivers/gpu/drm/i915/i915_gem_tiling.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
> index 139d17d..537545b 100644
> --- a/drivers/gpu/drm/i915/i915_gem_tiling.c
> +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
> @@ -238,6 +238,9 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
>  		}
>  	}
>  
> +	if (stride < tile_width)
> +		return false;
> +
>  	/* 965+ just needs multiples of tile width */
>  	if (INTEL_INFO(dev)->gen >= 4) {
>  		if (stride & (tile_width - 1))
> @@ -246,9 +249,6 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
>  	}
>  
>  	/* Pre-965 needs power of two tile widths */
> -	if (stride < tile_width)
> -		return false;
> -
>  	if (stride & (stride - 1))
>  		return false;
>  
> -- 
> 1.8.1.5
>
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 139d17d..537545b 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -238,6 +238,9 @@  i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
 		}
 	}
 
+	if (stride < tile_width)
+		return false;
+
 	/* 965+ just needs multiples of tile width */
 	if (INTEL_INFO(dev)->gen >= 4) {
 		if (stride & (tile_width - 1))
@@ -246,9 +249,6 @@  i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
 	}
 
 	/* Pre-965 needs power of two tile widths */
-	if (stride < tile_width)
-		return false;
-
 	if (stride & (stride - 1))
 		return false;