diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-07-12 19:35:38 +0100 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-08-01 19:46:16 -0700 |
| commit | a1efd14a99483a4fb9308902397ed86b69454c99 (patch) | |
| tree | e0e64ed6a78a41fdc9dada859a552a94afdc2800 /drivers/gpu/drm | |
| parent | 7de56f43e06ec6e17f548dfb359d395adbfbb87d (diff) | |
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>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_overlay.c | 7 |
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 d7ad5139d17..fe05ba27440 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; |