drm/ast: vga: Inline ast_vga_connector_init()

Inline ast_vga_connector_init() into its only caller. The helper
currently only does half of the connector-init work and is trivial
enough to be inlined. While at it, remove the error message from the
call to ast_ddc_create(). The function already warns on errors.

Also set the local variables for encoder and connector as late as
possible, so that the compiler warns if we use them before having
initialized the instance.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911115347.899148-9-tzimmermann@suse.de

1 files changed, 26 insertions, 29 deletions

diff --git a/drivers/gpu/drm/ast/ast_vga.c b/drivers/gpu/drm/ast/ast_vga.c
index 3e815da43fbd..5c79b773af57 100644
--- a/drivers/gpu/drm/ast/ast_vga.c
+++ b/drivers/gpu/drm/ast/ast_vga.c
@@ -71,52 +71,49 @@ static const struct drm_connector_funcs ast_vga_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *connector)
+/*
+ * Output
+ */
+
+int ast_vga_output_init(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
 	struct i2c_adapter *ddc;
+	struct drm_encoder *encoder;
+	struct ast_connector *ast_connector;
+	struct drm_connector *connector;
 	int ret;
 
+	/* DDC */
+
 	ddc = ast_ddc_create(ast);
-	if (IS_ERR(ddc)) {
-		ret = PTR_ERR(ddc);
-		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
+	if (IS_ERR(ddc))
+		return PTR_ERR(ddc);
+
+	/* encoder */
+
+	encoder = &ast->output.vga.encoder;
+	ret = drm_encoder_init(dev, encoder, &ast_vga_encoder_funcs,
+			       DRM_MODE_ENCODER_DAC, NULL);
+	if (ret)
 		return ret;
-	}
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	/* connector */
 
+	ast_connector = &ast->output.vga.connector;
+	connector = &ast_connector->base;
 	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
 					  DRM_MODE_CONNECTOR_VGA, ddc);
 	if (ret)
 		return ret;
-
 	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
 
 	connector->interlace_allowed = 0;
 	connector->doublescan_allowed = 0;
-
 	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
 
-	return 0;
-}
-
-int ast_vga_output_init(struct ast_device *ast)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.vga.encoder;
-	struct ast_connector *ast_connector = &ast->output.vga.connector;
-	struct drm_connector *connector = &ast_connector->base;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder, &ast_vga_encoder_funcs,
-			       DRM_MODE_ENCODER_DAC, NULL);
-	if (ret)
-		return ret;
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_vga_connector_init(dev, connector);
-	if (ret)
-		return ret;
 	ast_connector->physical_status = connector->status;
 
 	ret = drm_connector_attach_encoder(connector, encoder);