On 03/02/2017 11:50, Chris Wilson wrote:
The current tail breaks the pattern of if (check) return false, which
can catch the reader out. If we move the gen2/3 power-of-two test into
the earlier gen2/3 branch, we can eliminate the contrary tail.
Suggested-by: Tvrtko Ursulin <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
---
drivers/gpu/drm/i915/i915_gem_tiling.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c
b/drivers/gpu/drm/i915/i915_gem_tiling.c
index a80f362d2ac1..62148396c796 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -158,6 +158,9 @@ i915_tiling_ok(struct drm_i915_gem_object *obj,
if (stride > 8192)
return false;
+ if (!is_power_of_2(stride))
+ return false;
+
if (IS_GEN3(i915)) {
if (obj->base.size > I830_FENCE_MAX_SIZE_VAL << 20)
return false;
@@ -176,12 +179,7 @@ i915_tiling_ok(struct drm_i915_gem_object *obj,
if (!stride || !IS_ALIGNED(stride, tile_width))
return false;
- /* 965+ just needs multiples of tile width */
- if (INTEL_GEN(i915) >= 4)
- return true;
-
- /* Pre-965 needs power of two tile widths */
- return is_power_of_2(stride);
+ return true;
}
static bool i915_vma_fence_prepare(struct i915_vma *vma,
Reviewed-by: Tvrtko Ursulin <[email protected]>
Regards,
Tvrtko
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