diff options
author | Thomas Zimmermann <tzimmermann@suse.de> | 2020-09-21 16:25:36 +0200 |
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committer | Thomas Zimmermann <tzimmermann@suse.de> | 2020-09-22 10:57:18 +0200 |
commit | b8f8dbf6495850b0babc551377bde754b7bc0eea (patch) | |
tree | 28f6b33686161168e04ef6759ae92b744c52b49f /drivers/gpu/drm/gma500 | |
parent | d7b1c018140fb4b513c4e05685d74ef8178ef179 (diff) | |
download | linux-b8f8dbf6495850b0babc551377bde754b7bc0eea.tar.bz2 |
drm/vram-helper: Fix use of top-down placement
Commit 7053e0eab473 ("drm/vram-helper: stop using TTM placement flags")
cleared the BO placement flags if top-down placement had been selected.
Hence, BOs that were supposed to go into VRAM are now placed in a default
location in system memory.
Trying to scanout the incorrectly pinned BO results in displayed garbage
and an error message.
[ 146.108127] ------------[ cut here ]------------
[ 146.1V08180] WARNING: CPU: 0 PID: 152 at drivers/gpu/drm/drm_gem_vram_helper.c:284 drm_gem_vram_offset+0x59/0x60 [drm_vram_helper]
...
[ 146.108591] ast_cursor_page_flip+0x3e/0x150 [ast]
[ 146.108622] ast_cursor_plane_helper_atomic_update+0x8a/0xc0 [ast]
[ 146.108654] drm_atomic_helper_commit_planes+0x197/0x4c0
[ 146.108699] drm_atomic_helper_commit_tail_rpm+0x59/0xa0
[ 146.108718] commit_tail+0x103/0x1c0
...
[ 146.109302] ---[ end trace d901a1ba1d949036 ]---
Fix the bug by keeping the placement flags. The top-down placement flag
is stored in a separate variable.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Fixes: 7053e0eab473 ("drm/vram-helper: stop using TTM placement flags")
Cc: Christian König <christian.koenig@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200921142536.4392-1-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/gma500')
0 files changed, 0 insertions, 0 deletions