When a MST encoder is passed to enc_to_dig_port(), the container_of() macro
does not return the digital port. Handle this by returning the member
"primary" in "struct intel_dp_mst_encoder"
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 45020d2..66af444 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1023,18 +1023,22 @@ intel_attached_encoder(struct drm_connector *connector)
return to_intel_connector(connector)->encoder;
}
-static inline struct intel_digital_port *
-enc_to_dig_port(struct drm_encoder *encoder)
-{
- return container_of(encoder, struct intel_digital_port, base.base);
-}
-
static inline struct intel_dp_mst_encoder *
enc_to_mst(struct drm_encoder *encoder)
{
return container_of(encoder, struct intel_dp_mst_encoder, base.base);
}
+static inline struct intel_digital_port *
+enc_to_dig_port(struct drm_encoder *encoder)
+{
+ if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
+ return enc_to_mst(encoder)->primary;
+ else
+ return container_of(encoder, struct intel_digital_port,
+ base.base);
+}
+
static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
{
return &enc_to_dig_port(encoder)->dp;
--
2.5.0
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