Fixes regression from
commit 4906557eb37b7fef84fad4304acef6dedf919880
Author: Rodrigo Vivi <[email protected]>
Date: Thu Jul 11 18:45:05 2013 -0300
drm/i915: Hook PSR functionality
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67526
Signed-off-by: Chris Wilson <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Ben Widawsky <[email protected]>
Cc: Daniel Vetter <[email protected]>
---
drivers/gpu/drm/i915/intel_dp.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 928b42f..7e16c6e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1514,10 +1514,10 @@ static bool intel_edp_psr_match_conditions(struct
intel_dp *intel_dp)
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = dig_port->base.base.crtc;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct drm_i915_gem_object *obj = to_intel_framebuffer(crtc->fb)->obj;
- struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
+ struct drm_i915_gem_object *obj;
+ struct intel_encoder *intel_encoder;
if (!IS_HASWELL(dev)) {
DRM_DEBUG_KMS("PSR not supported on this platform\n");
@@ -1544,12 +1544,21 @@ static bool intel_edp_psr_match_conditions(struct
intel_dp *intel_dp)
return false;
}
+ crtc = dig_port->base.base.crtc;
+ if (crtc == NULL) {
+ DRM_DEBUG_KMS("crtc not active for PSR\n");
+ dev_priv->no_psr_reason = PSR_CRTC_NOT_ACTIVE;
+ return false;
+ }
+
+ intel_crtc = to_intel_crtc(crtc);
if (!intel_crtc->active || !crtc->fb || !crtc->mode.clock) {
DRM_DEBUG_KMS("crtc not active for PSR\n");
dev_priv->no_psr_reason = PSR_CRTC_NOT_ACTIVE;
return false;
}
+ obj = to_intel_framebuffer(crtc->fb)->obj;
if (obj->tiling_mode != I915_TILING_X ||
obj->fence_reg == I915_FENCE_REG_NONE) {
DRM_DEBUG_KMS("PSR condition failed: fb not tiled or fenced\n");
--
1.8.4.rc0
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