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| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-05-25 16:32:45 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-06-16 14:25:43 +0300 |
| commit | d6aed57481c5b746f91792c8a977f537c09e52c5 (patch) | |
| tree | 8682803bf6b4d391c4df4a3df094cfdba5eeb5e8 /drivers/gpu/drm/rcar-du/rcar_du_kms.c | |
| parent | 911316fe2f4113a096b9975f2467fc501864aef0 (diff) | |
| download | op-kernel-dev-d6aed57481c5b746f91792c8a977f537c09e52c5.zip op-kernel-dev-d6aed57481c5b746f91792c8a977f537c09e52c5.tar.gz | |
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_kms.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 20859aa..4bb5af4 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -336,7 +336,7 @@ static int rcar_du_atomic_check(struct drm_device *dev, dev_dbg(rcdu->dev, "%s: finding free planes for group %u\n", __func__, index); - for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) { + for (i = 0; i < group->num_planes; ++i) { struct rcar_du_plane *plane = &group->planes[i]; struct rcar_du_plane_state *plane_state; struct drm_plane_state *s; |
