[RFC PATCH 115/162] drm/i915/lmem: reset the lmem buffer created by fbdev

[Matthew Auld]

From: Animesh Manna <animesh.manna at intel.com>

Newly created lmem buffer by fbdev need reset otherwise it has old
garbage data. Same logic was present for stolen memory, extended
the same for lmem.

Cc: Daniel Vetter <daniel.vetter at intel.com>
Cc: Daniel Vetter <daniel.vetter at intel.com>
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 65539fab6269..6bd3bbe42bf0 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -280,7 +280,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
 	 * If the object is stolen however, it will be full of whatever
 	 * garbage was left in there.
 	 */
-	if (vma->obj->stolen && !prealloc)
+	if ((vma->obj->stolen || HAS_LMEM(dev_priv)) && !prealloc)
 		memset_io(info->screen_base, 0, info->screen_size);
 
 	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
-- 
2.26.2