[Intel-gfx] [PATCH v4 8/8] hack: align dumb buffer stride to 4k to allow for gtt remapping

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

v2: Leave the stride alone for buffers that look to be for the cursor
---
 drivers/gpu/drm/i915/i915_gem.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1e7c95d0fea1..b4b34519af80 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -745,7 +745,12 @@ i915_gem_dumb_create(struct drm_file *file,
 		     struct drm_mode_create_dumb *args)
 {
 	/* have to work out size/pitch and return them */
-	args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 64);
+	if (args->bpp == 32 && (args->width == 64 ||
+				args->width == 128 ||
+				args->width == 256))
+		args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 64);
+	else
+		args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 4096);
 	args->size = args->pitch * args->height;
 	return i915_gem_create(file, to_i915(dev),
 			       args->size, &args->handle);
-- 
2.19.2