drm: bridge: dw-hdmi: Remove unneeded arguments to bind/unbind functions

The master argument isn't used. The data argument, a void pointer, is
used by the bind function only where it's cast to a drm_device pointer,
which can easily be obtained from the encoder argument instead. Remove
them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-3-laurent.pinchart+renesas@ideasonboard.com

drivers/gpu/drm/bridge/dw-hdmi.c

@@ -1854,12 +1854,10 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi)
 	return 0;
 }
 
-int dw_hdmi_bind(struct device *dev, struct device *master,
-		 void *data, struct drm_encoder *encoder,
+int dw_hdmi_bind(struct device *dev, struct drm_encoder *encoder,
 		 struct resource *iores, int irq,
 		 const struct dw_hdmi_plat_data *plat_data)
 {
-	struct drm_device *drm = data;
 	struct device_node *np = dev->of_node;
 	struct platform_device_info pdevinfo;
 	struct device_node *ddc_node;
@@ -1992,7 +1990,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 	if (ret)
 		goto err_iahb;
 
-	ret = dw_hdmi_register(drm, hdmi);
+	ret = dw_hdmi_register(encoder->dev, hdmi);
 	if (ret)
 		goto err_iahb;
 
@@ -2059,7 +2057,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_bind);
 
-void dw_hdmi_unbind(struct device *dev, struct device *master, void *data)
+void dw_hdmi_unbind(struct device *dev)
 {
 	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
 

drivers/gpu/drm/imx/dw_hdmi-imx.c

@@ -249,7 +249,7 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
 	drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);
 
-	ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
+	ret = dw_hdmi_bind(dev, encoder, iores, irq, plat_data);
 
 	/*
 	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
@@ -264,7 +264,7 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
 static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
 			       void *data)
 {
-	return dw_hdmi_unbind(dev, master, data);
+	return dw_hdmi_unbind(dev);
 }
 
 static const struct component_ops dw_hdmi_imx_ops = {

drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

@@ -301,7 +301,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 	drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);
 
-	ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
+	ret = dw_hdmi_bind(dev, encoder, iores, irq, plat_data);
 
 	/*
 	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
@@ -316,7 +316,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
 				    void *data)
 {
-	return dw_hdmi_unbind(dev, master, data);
+	return dw_hdmi_unbind(dev);
 }
 
 static const struct component_ops dw_hdmi_rockchip_ops = {

include/drm/bridge/dw_hdmi.h

@@ -56,9 +56,8 @@ struct dw_hdmi_plat_data {
 					   struct drm_display_mode *mode);
 };
 
-void dw_hdmi_unbind(struct device *dev, struct device *master, void *data);
-int dw_hdmi_bind(struct device *dev, struct device *master,
-		 void *data, struct drm_encoder *encoder,
+void dw_hdmi_unbind(struct device *dev);
+int dw_hdmi_bind(struct device *dev, struct drm_encoder *encoder,
 		 struct resource *iores, int irq,
 		 const struct dw_hdmi_plat_data *plat_data);