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

Message ID 20201127120718.454037-116-matthew.auld@intel.com (mailing list archive)
State New, archived
Headers show
Series DG1 + LMEM enabling | expand

Commit Message

Matthew Auld Nov. 27, 2020, 12:06 p.m. UTC
From: Animesh Manna <animesh.manna@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@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
 drivers/gpu/drm/i915/display/intel_fbdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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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) */