intel_atomic_setup_scalers() dereferences 'plane' before the plane has
been assigned. The plane ID assignment doing this dereference is only
needed for debugging messages later in the function, so just move the
assignment farther down the function to a point where plane will no
longer be NULL.
This was introduced in:
commit 133b0d128be39e308ccd3b3d765c31ebdbf5380e
Author: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Date: Mon Jun 15 12:33:39 2015 +0200
drm/i915: Clean up intel_atomic_setup_scalers slightly.
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
Reported-by: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_atomic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 0aeced8..5c79a31 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -325,7 +325,6 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
scaler_id = &scaler_state->scaler_id;
} else {
name = "PLANE";
- idx = plane->base.id;
if (!drm_state)
continue;
@@ -359,6 +358,7 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
}
intel_plane = to_intel_plane(plane);
+ idx = plane->base.id;
/* plane on different crtc cannot be a scaler user of this crtc */
if (WARN_ON(intel_plane->pipe != intel_crtc->pipe)) {
--
2.1.4
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