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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2015-09-10 16:08:03 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-09-10 18:27:17 +0200
commitf2a066f3dee8a0e37015d15298e14e9ad6c0a53d (patch)
treeea7a1dc702c8c55ce006e7d2bdd4715d8e525a87 /drivers/gpu/drm/i915/intel_atomic.c
parentbca8013ec24210087bfed49678ec821c811982b1 (diff)
downloadlinux-f2a066f3dee8a0e37015d15298e14e9ad6c0a53d.tar.gz
drm/i915: Use crtc->state for duplication.
In async mode crtc->config can be updated after the locks are released,
resulting in the wrong state being duplicated.

Note that this also removes a spurious assignment of crtc_state->crtc
introduced in

commit f0c60574eb1216b0904c0d696c64d5096d6e4913
Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date:   Tue Apr 21 17:12:58 2015 +0300

    drm/i915: Call drm helpers when duplicating crtc and plane states

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_atomic.c')
-rw-r--r--drivers/gpu/drm/i915/intel_atomic.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 9336e8030980..2c4b1c44296c 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -85,22 +85,14 @@ intel_connector_atomic_get_property(struct drm_connector *connector,
 struct drm_crtc_state *
 intel_crtc_duplicate_state(struct drm_crtc *crtc)
 {
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct intel_crtc_state *crtc_state;
 
-	if (WARN_ON(!intel_crtc->config))
-		crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
-	else
-		crtc_state = kmemdup(intel_crtc->config,
-				     sizeof(*intel_crtc->config), GFP_KERNEL);
-
+	crtc_state = kmemdup(crtc->state, sizeof(*crtc_state), GFP_KERNEL);
 	if (!crtc_state)
 		return NULL;
 
 	__drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->base);
 
-	crtc_state->base.crtc = crtc;
-
 	return &crtc_state->base;
 }