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| author | Flora Cui <Flora.Cui@amd.com> | 2016-04-20 10:23:47 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-04-27 12:26:50 -0400 |
| commit | 56fc350224f16901db709cd8cba86bac751aa2a2 (patch) | |
| tree | f9b6f852d5d928e463a1427bcb95f6a54f72634a /drivers/gpu/drm/vc4/vc4_regs.h | |
| parent | 18cdfe751f26ffa610f2a7b59775c5cc4c1c9619 (diff) | |
| download | linux-56fc350224f16901db709cd8cba86bac751aa2a2.tar.bz2 | |
drm/ttm: fix kref count mess in ttm_bo_move_to_lru_tail
Fixes the following scenario:
1. Page table bo allocated in vram and linked to man->lru.
tbo->list_kref.refcount=2
2. Page table bo is swapped out and removed from man->lru.
tbo->list_kref.refcount=1
3. Command submission from userspace. Page table bo is moved
to vram. ttm_bo_move_to_lru_tail() link it to man->lru and
don't increase the kref count.
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_regs.h')
0 files changed, 0 insertions, 0 deletions