Use the ddc pointer provided by the generic connector.

Signed-off-by: Andrzej Pietrasiewicz <andrze...@collabora.com>
---
This is the same patch as in the series:

https://www.spinics.net/lists/dri-devel/msg220128.html

but this time without a bug.

radeon_add_legacy_connector() uses a local ddc variable, but it has
not been declared in the previous version of this patch.

Compile tested.

 drivers/gpu/drm/radeon/radeon_connectors.c | 143 +++++++++++++++------
 1 file changed, 107 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c 
b/drivers/gpu/drm/radeon/radeon_connectors.c
index c60d1a44d22a..62d37eddf99c 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1870,6 +1870,7 @@ radeon_add_atom_connector(struct drm_device *dev,
        struct radeon_connector_atom_dig *radeon_dig_connector;
        struct drm_encoder *encoder;
        struct radeon_encoder *radeon_encoder;
+       struct i2c_adapter *ddc = NULL;
        uint32_t subpixel_order = SubPixelNone;
        bool shared_ddc = false;
        bool is_dp_bridge = false;
@@ -1947,17 +1948,21 @@ radeon_add_atom_connector(struct drm_device *dev,
                radeon_connector->con_priv = radeon_dig_connector;
                if (i2c_bus->valid) {
                        radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, 
i2c_bus);
-                       if (radeon_connector->ddc_bus)
+                       if (radeon_connector->ddc_bus) {
                                has_aux = true;
-                       else
+                               ddc = &radeon_connector->ddc_bus->adapter;
+                       } else {
                                DRM_ERROR("DP: Failed to assign ddc bus! Check 
dmesg for i2c errors.\n");
+                       }
                }
                switch (connector_type) {
                case DRM_MODE_CONNECTOR_VGA:
                case DRM_MODE_CONNECTOR_DVIA:
                default:
-                       drm_connector_init(dev, &radeon_connector->base,
-                                          &radeon_dp_connector_funcs, 
connector_type);
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_dp_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
                        drm_connector_helper_add(&radeon_connector->base,
                                                 
&radeon_dp_connector_helper_funcs);
                        connector->interlace_allowed = true;
@@ -1979,8 +1984,10 @@ radeon_add_atom_connector(struct drm_device *dev,
                case DRM_MODE_CONNECTOR_HDMIA:
                case DRM_MODE_CONNECTOR_HDMIB:
                case DRM_MODE_CONNECTOR_DisplayPort:
-                       drm_connector_init(dev, &radeon_connector->base,
-                                          &radeon_dp_connector_funcs, 
connector_type);
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_dp_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
                        drm_connector_helper_add(&radeon_connector->base,
                                                 
&radeon_dp_connector_helper_funcs);
                        drm_object_attach_property(&radeon_connector->base.base,
@@ -2027,8 +2034,10 @@ radeon_add_atom_connector(struct drm_device *dev,
                        break;
                case DRM_MODE_CONNECTOR_LVDS:
                case DRM_MODE_CONNECTOR_eDP:
-                       drm_connector_init(dev, &radeon_connector->base,
-                                          &radeon_lvds_bridge_connector_funcs, 
connector_type);
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   
&radeon_lvds_bridge_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
                        drm_connector_helper_add(&radeon_connector->base,
                                                 
&radeon_dp_connector_helper_funcs);
                        drm_object_attach_property(&radeon_connector->base.base,
@@ -2042,13 +2051,18 @@ radeon_add_atom_connector(struct drm_device *dev,
        } else {
                switch (connector_type) {
                case DRM_MODE_CONNECTOR_VGA:
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_vga_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
                                if (!radeon_connector->ddc_bus)
                                        DRM_ERROR("VGA: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_vga_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                        radeon_connector->dac_load_detect = true;
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
rdev->mode_info.load_detect_property,
@@ -2067,13 +2081,18 @@ radeon_add_atom_connector(struct drm_device *dev,
                        connector->doublescan_allowed = true;
                        break;
                case DRM_MODE_CONNECTOR_DVIA:
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_vga_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
                                if (!radeon_connector->ddc_bus)
                                        DRM_ERROR("DVIA: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_vga_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                        radeon_connector->dac_load_detect = true;
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
rdev->mode_info.load_detect_property,
@@ -2098,13 +2117,18 @@ radeon_add_atom_connector(struct drm_device *dev,
                                goto failed;
                        radeon_dig_connector->igp_lane_info = igp_lane_info;
                        radeon_connector->con_priv = radeon_dig_connector;
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_dvi_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
                                if (!radeon_connector->ddc_bus)
                                        DRM_ERROR("DVI: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_dvi_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                        subpixel_order = SubPixelHorizontalRGB;
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
rdev->mode_info.coherent_mode_property,
@@ -2155,13 +2179,18 @@ radeon_add_atom_connector(struct drm_device *dev,
                                goto failed;
                        radeon_dig_connector->igp_lane_info = igp_lane_info;
                        radeon_connector->con_priv = radeon_dig_connector;
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_dvi_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
                                if (!radeon_connector->ddc_bus)
                                        DRM_ERROR("HDMI: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_dvi_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
rdev->mode_info.coherent_mode_property,
                                                      1);
@@ -2205,15 +2234,20 @@ radeon_add_atom_connector(struct drm_device *dev,
                                goto failed;
                        radeon_dig_connector->igp_lane_info = igp_lane_info;
                        radeon_connector->con_priv = radeon_dig_connector;
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_dp_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dp_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
-                               if (radeon_connector->ddc_bus)
+                               if (radeon_connector->ddc_bus) {
                                        has_aux = true;
-                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
+                               } else {
                                        DRM_ERROR("DP: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               }
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_dp_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dp_connector_helper_funcs);
                        subpixel_order = SubPixelHorizontalRGB;
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
rdev->mode_info.coherent_mode_property,
@@ -2255,15 +2289,20 @@ radeon_add_atom_connector(struct drm_device *dev,
                                goto failed;
                        radeon_dig_connector->igp_lane_info = igp_lane_info;
                        radeon_connector->con_priv = radeon_dig_connector;
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_edp_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dp_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
-                               if (radeon_connector->ddc_bus)
+                               if (radeon_connector->ddc_bus) {
                                        has_aux = true;
-                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
+                               } else {
                                        DRM_ERROR("DP: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               }
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_edp_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_dp_connector_helper_funcs);
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
dev->mode_config.scaling_mode_property,
                                                      
DRM_MODE_SCALE_FULLSCREEN);
@@ -2274,7 +2313,10 @@ radeon_add_atom_connector(struct drm_device *dev,
                case DRM_MODE_CONNECTOR_SVIDEO:
                case DRM_MODE_CONNECTOR_Composite:
                case DRM_MODE_CONNECTOR_9PinDIN:
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_tv_connector_funcs, connector_type);
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   &radeon_tv_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
                        drm_connector_helper_add(&radeon_connector->base, 
&radeon_tv_connector_helper_funcs);
                        radeon_connector->dac_load_detect = true;
                        drm_object_attach_property(&radeon_connector->base.base,
@@ -2294,13 +2336,18 @@ radeon_add_atom_connector(struct drm_device *dev,
                                goto failed;
                        radeon_dig_connector->igp_lane_info = igp_lane_info;
                        radeon_connector->con_priv = radeon_dig_connector;
-                       drm_connector_init(dev, &radeon_connector->base, 
&radeon_lvds_connector_funcs, connector_type);
-                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_lvds_connector_helper_funcs);
                        if (i2c_bus->valid) {
                                radeon_connector->ddc_bus = 
radeon_i2c_lookup(rdev, i2c_bus);
                                if (!radeon_connector->ddc_bus)
                                        DRM_ERROR("LVDS: Failed to assign ddc 
bus! Check dmesg for i2c errors.\n");
+                               else
+                                       ddc = 
&radeon_connector->ddc_bus->adapter;
                        }
+                       drm_connector_init_with_ddc(dev, 
&radeon_connector->base,
+                                                   
&radeon_lvds_connector_funcs,
+                                                   connector_type,
+                                                   ddc);
+                       drm_connector_helper_add(&radeon_connector->base, 
&radeon_lvds_connector_helper_funcs);
                        drm_object_attach_property(&radeon_connector->base.base,
                                                      
dev->mode_config.scaling_mode_property,
                                                      
DRM_MODE_SCALE_FULLSCREEN);
@@ -2344,6 +2391,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
        struct radeon_device *rdev = dev->dev_private;
        struct drm_connector *connector;
        struct radeon_connector *radeon_connector;
+       struct i2c_adapter *ddc = NULL;
        uint32_t subpixel_order = SubPixelNone;
 
        if (connector_type == DRM_MODE_CONNECTOR_Unknown)
@@ -2378,13 +2426,18 @@ radeon_add_legacy_connector(struct drm_device *dev,
 
        switch (connector_type) {
        case DRM_MODE_CONNECTOR_VGA:
-               drm_connector_init(dev, &radeon_connector->base, 
&radeon_vga_connector_funcs, connector_type);
-               drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                if (i2c_bus->valid) {
                        radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, 
i2c_bus);
                        if (!radeon_connector->ddc_bus)
                                DRM_ERROR("VGA: Failed to assign ddc bus! Check 
dmesg for i2c errors.\n");
+                       else
+                               ddc = &radeon_connector->ddc_bus->adapter;
                }
+               drm_connector_init_with_ddc(dev, &radeon_connector->base,
+                                           &radeon_vga_connector_funcs,
+                                           connector_type,
+                                           ddc);
+               drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                radeon_connector->dac_load_detect = true;
                drm_object_attach_property(&radeon_connector->base.base,
                                              
rdev->mode_info.load_detect_property,
@@ -2395,13 +2448,18 @@ radeon_add_legacy_connector(struct drm_device *dev,
                connector->doublescan_allowed = true;
                break;
        case DRM_MODE_CONNECTOR_DVIA:
-               drm_connector_init(dev, &radeon_connector->base, 
&radeon_vga_connector_funcs, connector_type);
-               drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                if (i2c_bus->valid) {
                        radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, 
i2c_bus);
                        if (!radeon_connector->ddc_bus)
                                DRM_ERROR("DVIA: Failed to assign ddc bus! 
Check dmesg for i2c errors.\n");
+                       else
+                               ddc = &radeon_connector->ddc_bus->adapter;
                }
+               drm_connector_init_with_ddc(dev, &radeon_connector->base,
+                                           &radeon_vga_connector_funcs,
+                                           connector_type,
+                                           ddc);
+               drm_connector_helper_add(&radeon_connector->base, 
&radeon_vga_connector_helper_funcs);
                radeon_connector->dac_load_detect = true;
                drm_object_attach_property(&radeon_connector->base.base,
                                              
rdev->mode_info.load_detect_property,
@@ -2413,13 +2471,18 @@ radeon_add_legacy_connector(struct drm_device *dev,
                break;
        case DRM_MODE_CONNECTOR_DVII:
        case DRM_MODE_CONNECTOR_DVID:
-               drm_connector_init(dev, &radeon_connector->base, 
&radeon_dvi_connector_funcs, connector_type);
-               drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                if (i2c_bus->valid) {
                        radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, 
i2c_bus);
                        if (!radeon_connector->ddc_bus)
                                DRM_ERROR("DVI: Failed to assign ddc bus! Check 
dmesg for i2c errors.\n");
+                       else
+                               ddc = &radeon_connector->ddc_bus->adapter;
                }
+               drm_connector_init_with_ddc(dev, &radeon_connector->base,
+                                           &radeon_dvi_connector_funcs,
+                                           connector_type,
+                                           ddc);
+               drm_connector_helper_add(&radeon_connector->base, 
&radeon_dvi_connector_helper_funcs);
                if (connector_type == DRM_MODE_CONNECTOR_DVII) {
                        radeon_connector->dac_load_detect = true;
                        drm_object_attach_property(&radeon_connector->base.base,
@@ -2436,7 +2499,10 @@ radeon_add_legacy_connector(struct drm_device *dev,
        case DRM_MODE_CONNECTOR_SVIDEO:
        case DRM_MODE_CONNECTOR_Composite:
        case DRM_MODE_CONNECTOR_9PinDIN:
-               drm_connector_init(dev, &radeon_connector->base, 
&radeon_tv_connector_funcs, connector_type);
+               drm_connector_init_with_ddc(dev, &radeon_connector->base,
+                                           &radeon_tv_connector_funcs,
+                                           connector_type,
+                                           ddc);
                drm_connector_helper_add(&radeon_connector->base, 
&radeon_tv_connector_helper_funcs);
                radeon_connector->dac_load_detect = true;
                /* RS400,RC410,RS480 chipset seems to report a lot
@@ -2458,13 +2524,18 @@ radeon_add_legacy_connector(struct drm_device *dev,
                connector->doublescan_allowed = false;
                break;
        case DRM_MODE_CONNECTOR_LVDS:
-               drm_connector_init(dev, &radeon_connector->base, 
&radeon_lvds_connector_funcs, connector_type);
-               drm_connector_helper_add(&radeon_connector->base, 
&radeon_lvds_connector_helper_funcs);
                if (i2c_bus->valid) {
                        radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, 
i2c_bus);
                        if (!radeon_connector->ddc_bus)
                                DRM_ERROR("LVDS: Failed to assign ddc bus! 
Check dmesg for i2c errors.\n");
+                       else
+                               ddc = &radeon_connector->ddc_bus->adapter;
                }
+               drm_connector_init_with_ddc(dev, &radeon_connector->base,
+                                           &radeon_lvds_connector_funcs,
+                                           connector_type,
+                                           ddc);
+               drm_connector_helper_add(&radeon_connector->base, 
&radeon_lvds_connector_helper_funcs);
                drm_object_attach_property(&radeon_connector->base.base,
                                              
dev->mode_config.scaling_mode_property,
                                              DRM_MODE_SCALE_FULLSCREEN);
-- 
2.17.1

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