diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-07-12 19:35:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 11:09:22 -0700 |
| commit | 4060b482bfb832715e43695e124031bede63be75 (patch) | |
| tree | 6125792ca44a6b2388ce42c68ae6f3652c13e653 | |
| parent | 5078304217e1e87bc7ffe8d7a4076e4cb0c0a318 (diff) | |
drm/i915: Check overlay stride errata for i830 and i845
commit a1efd14a99483a4fb9308902397ed86b69454c99 upstream.
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>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -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 d7ad5139d17c..fe05ba27440a 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; |