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| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-05-25 15:32:45 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-06-16 13:25:43 +0200 |
| commit | d6aed57481c5b746f91792c8a977f537c09e52c5 (patch) | |
| tree | 8682803bf6b4d391c4df4a3df094cfdba5eeb5e8 /drivers/gpu/drm/rcar-du/rcar_du_group.h | |
| parent | drm: rcar-du: Disable all planes when stopping the CRTC (diff) | |
| download | linux-d6aed57481c5b746f91792c8a977f537c09e52c5.tar.xz linux-d6aed57481c5b746f91792c8a977f537c09e52c5.zip | |
drm: rcar-du: Fix crash with groups that have less than 9 planes
Commit 917de180379d ("drm: rcar-du: Implement universal plane support")
made the number of planes per group dynamic, but didn't update all loops
over the planes array, resulting in out-of-bound accesses on DU
instances that have an odd number of CRTCs (such as the R8A7790). Fix
it.
Fixes: 917de180379d ("drm: rcar-du: Implement universal plane support")
Cc: stable@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_group.h')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_group.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h index 7b414b31c3be..d7318e1a6b00 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_group.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h @@ -30,6 +30,7 @@ struct rcar_du_device; * @used_crtcs: number of CRTCs currently in use * @lock: protects the dptsr_planes field and the DPTSR register * @dptsr_planes: bitmask of planes driven by dot-clock and timing generator 1 + * @num_planes: number of planes in the group * @planes: planes handled by the group */ struct rcar_du_group { @@ -44,6 +45,7 @@ struct rcar_du_group { struct mutex lock; unsigned int dptsr_planes; + unsigned int num_planes; struct rcar_du_plane planes[RCAR_DU_NUM_KMS_PLANES]; }; |