drm-i915-gen4-has-non-power-of-two-strides.patch: drop buggy bugfix

drm-i915-gen4-has-non-power-of-two-strides.patch

@@ -1,69 +0,0 @@
-From bea96046b4245e9abd65ed7acfed9adfd5f6c639 Mon Sep 17 00:00:00 2001
-From: Chris Wilson <chris@chris-wilson.co.uk>
-Date: Thu, 3 Mar 2011 23:43:02 +0000
-Subject: [PATCH] drm/i915: Gen4+ has non-power-of-two strides
-
-In c2e0eb16707, we started checking that the buffer was the correct size
-for tiled access by ensuring that the size was a multiple of tiles.
-However, gen4+ complicates the issue by allowing any multiple of 4096
-bytes for the stride and so the simple check based on a power-of-two
-stride was failing for valid bo.
-
-Reported-by: Dan Williams <dcbw@redhat.com>
-Reported-by: Robert Hooker <sarvatt@gmail.com>
-Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
-Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
----
- drivers/gpu/drm/i915/i915_gem_tiling.c |   29 ++++++++++++++---------------
- 1 files changed, 14 insertions(+), 15 deletions(-)
-
-diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
-index 79a04fd..654f350 100644
---- a/drivers/gpu/drm/i915/i915_gem_tiling.c
-+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
-@@ -215,6 +215,19 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
- 		}
- 	}
- 
-+	if (INTEL_INFO(dev)->gen >= 4) {
-+		/* 965+ just needs multiples of tile width */
-+		if (stride & (tile_width - 1))
-+			return false;
-+	} else {
-+		/* Pre-965 needs power of two tile widths */
-+		if (stride < tile_width)
-+			return false;
-+
-+		if (stride & (stride - 1))
-+			return false;
-+	}
-+
- 	if (IS_GEN2(dev) ||
- 	    (tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)))
- 		tile_height = 32;
-@@ -226,21 +239,7 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
- 		tile_height *= 2;
- 
- 	/* Size needs to be aligned to a full tile row */
--	if (size & (tile_height * stride - 1))
--		return false;
--
--	/* 965+ just needs multiples of tile width */
--	if (INTEL_INFO(dev)->gen >= 4) {
--		if (stride & (tile_width - 1))
--			return false;
--		return true;
--	}
--
--	/* Pre-965 needs power of two tile widths */
--	if (stride < tile_width)
--		return false;
--
--	if (stride & (stride - 1))
-+	if (size % (tile_height * stride))
- 		return false;
- 
- 	return true;
--- 
-1.7.4.1
-

kernel.spec

@@ -666,7 +666,6 @@ Patch1810: drm-nouveau-updates.patch
 Patch1824: drm-intel-next.patch
 # make sure the lvds comes back on lid open
 Patch1825: drm-intel-make-lvds-work.patch
-Patch1827: drm-i915-gen4-has-non-power-of-two-strides.patch
 
 Patch1900: linux-2.6-intel-iommu-igfx.patch
 
@@ -1251,9 +1250,6 @@ ApplyOptionalPatch drm-nouveau-updates.patch
 ApplyOptionalPatch drm-intel-next.patch
 ApplyPatch drm-intel-make-lvds-work.patch
 ApplyPatch linux-2.6-intel-iommu-igfx.patch
-# rhbz#681285 (i965: crash in brw_wm_surface_state.c::prepare_wm_surfaces()
-#  where intelObj->mt == NULL)
-#ApplyPatch drm-i915-gen4-has-non-power-of-two-strides.patch
 
 # silence the ACPI blacklist code
 ApplyPatch linux-2.6-silence-acpi-blacklist.patch
@@ -1896,6 +1892,7 @@ fi
   in many moons.
 - linux-2.6-defaults-pci_use_crs.patch: ditto.
 - linux-2.6-selinux-mprotect-checks.patch: upstream a while ago.
+- drm-i915-gen4-has-non-power-of-two-strides.patch: drop buggy bugfix
 - drop some more unapplied crud.
 - We haven't applied firewire patches in a dogs age.