[RFC,55/60] drm/i915/lmem: reset the lmem buffer created by fbdev
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Message ID 20200710115757.290984-56-matthew.auld@intel.com
State New
Headers show
Series
  • DG1 LMEM enabling
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Commit Message

Matthew Auld July 10, 2020, 11:57 a.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>
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(-)

Patch
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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 f49280218413..23a1e4638c1e 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -265,7 +265,7 @@  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) */