[Intel-gfx] [PATCH v2 1/5] drm/i915: Initialize dig_port->aux_ch to NONE to be sure

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Make sure dig_port->aux_ch is trustworthy by initializing it
to NONE (-1) at the start. The encoder init will later fill in
the actual value, if appropriate.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/g4x_dp.c    | 2 ++
 drivers/gpu/drm/i915/display/g4x_hdmi.c  | 2 ++
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c 
b/drivers/gpu/drm/i915/display/g4x_dp.c
index c58a3f249a01..0cab5992e3da 100644
--- a/drivers/gpu/drm/i915/display/g4x_dp.c
+++ b/drivers/gpu/drm/i915/display/g4x_dp.c
@@ -1273,6 +1273,8 @@ bool g4x_dp_init(struct drm_i915_private *dev_priv,
        if (!dig_port)
                return false;
 
+       dig_port->aux_ch = AUX_CH_NONE;
+
        intel_connector = intel_connector_alloc();
        if (!intel_connector)
                goto err_connector_alloc;
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c 
b/drivers/gpu/drm/i915/display/g4x_hdmi.c
index 8c71e3ede680..c1fd13bdc9d2 100644
--- a/drivers/gpu/drm/i915/display/g4x_hdmi.c
+++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c
@@ -698,6 +698,8 @@ void g4x_hdmi_init(struct drm_i915_private *dev_priv,
        if (!dig_port)
                return;
 
+       dig_port->aux_ch = AUX_CH_NONE;
+
        intel_connector = intel_connector_alloc();
        if (!intel_connector) {
                kfree(dig_port);
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c 
b/drivers/gpu/drm/i915/display/intel_ddi.c
index 61722556bb47..6cb24a472a9b 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4747,6 +4747,8 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, 
enum port port)
        if (!dig_port)
                return;
 
+       dig_port->aux_ch = AUX_CH_NONE;
+
        encoder = &dig_port->base;
        encoder->devdata = devdata;
 
-- 
2.39.3