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

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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files 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 c807eb93755b..b56185f4babb 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -235,6 +235,9 @@ 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))
@@ -243,9 +246,6 @@ 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;