summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorChris Wilson <chris@chris-wilson.co.uk>2010-07-12 19:35:38 +0100
committerEric Anholt <eric@anholt.net>2010-08-01 19:46:16 -0700
commita1efd14a99483a4fb9308902397ed86b69454c99 (patch)
treee0e64ed6a78a41fdc9dada859a552a94afdc2800
parent7de56f43e06ec6e17f548dfb359d395adbfbb87d (diff)
downloadop-kernel-dev-a1efd14a99483a4fb9308902397ed86b69454c99.zip
op-kernel-dev-a1efd14a99483a4fb9308902397ed86b69454c99.tar.gz
drm/i915: Check overlay stride errata for i830 and i845
Apparently i830 and i845 cannot handle any stride that is not a multiple of 256, unlike their brethren which do support 64 byte aligned strides. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: Eric Anholt <eric@anholt.net>
-rw-r--r--drivers/gpu/drm/i915/intel_overlay.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index d7ad513..fe05ba2 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -958,7 +958,7 @@ static int check_overlay_src(struct drm_device *dev,
|| rec->src_width < N_HORIZ_Y_TAPS*4)
return -EINVAL;
- /* check alingment constrains */
+ /* check alignment constraints */
switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
case I915_OVERLAY_RGB:
/* not implemented */
@@ -990,7 +990,10 @@ static int check_overlay_src(struct drm_device *dev,
return -EINVAL;
/* stride checking */
- stride_mask = 63;
+ if (IS_I830(dev) || IS_845G(dev))
+ stride_mask = 255;
+ else
+ stride_mask = 63;
if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
return -EINVAL;
OpenPOWER on IntegriCloud