mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 06:12:08 +00:00
drm/i915: Clear the stolen fb before enabling
As the stolen memory region will contain the contents of whatever was last there, it invariably contains garbage. To be consistent with the shmemfs backed fb and the expectations of the fb layer, we need to clear the fb prior to installing it as an fbcon. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58111 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> [danvet: Fixup sparse __iomem confusion reported by Wu Fengguang.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
parent
eb119bd612
commit
88afe715dd
@ -155,6 +155,13 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
|
||||
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
|
||||
drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
|
||||
|
||||
/* If the object is shmemfs backed, it will have given us zeroed pages.
|
||||
* If the object is stolen however, it will be full of whatever
|
||||
* garbage was left in there.
|
||||
*/
|
||||
if (ifbdev->ifb.obj->stolen)
|
||||
memset_io(info->screen_base, 0, info->screen_size);
|
||||
|
||||
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
|
||||
|
||||
DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
|
||||
|
Loading…
Reference in New Issue
Block a user