change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/gpu/vga/vga_switcheroo.c
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@@ -35,6 +35,7 @@
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 #include <linux/debugfs.h>
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 #include <linux/fb.h>
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 #include <linux/fs.h>
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+#include <linux/fbcon.h>
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 #include <linux/module.h>
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 #include <linux/pci.h>
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 #include <linux/pm_domain.h>
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@@ -133,7 +134,6 @@
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  * @delayed_switch_active: whether a delayed switch is pending
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  * @delayed_client_id: client to which a delayed switch is pending
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  * @debugfs_root: directory for vga_switcheroo debugfs interface
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- * @switch_file: file for vga_switcheroo debugfs interface
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  * @registered_clients: number of registered GPUs
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  *	(counting only vga clients, not audio clients)
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  * @clients: list of registered clients
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@@ -152,7 +152,6 @@
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 	enum vga_switcheroo_client_id delayed_client_id;
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 	struct dentry *debugfs_root;
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-	struct dentry *switch_file;
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 	int registered_clients;
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 	struct list_head clients;
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@@ -168,7 +167,7 @@
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 #define client_is_vga(c)		(!client_is_audio(c))
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 #define client_id(c)		((c)->id & ~ID_BIT_AUDIO)
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-static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv);
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+static void vga_switcheroo_debugfs_init(struct vgasr_priv *priv);
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 static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv);
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 /* only one switcheroo per system */
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@@ -736,14 +735,8 @@
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 	if (!active->driver_power_control)
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 		set_audio_state(active->id, VGA_SWITCHEROO_OFF);
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-	if (new_client->fb_info) {
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-		struct fb_event event;
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-
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-		console_lock();
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-		event.info = new_client->fb_info;
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-		fb_notifier_call_chain(FB_EVENT_REMAP_ALL_CONSOLE, &event);
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-		console_unlock();
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-	}
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+	if (new_client->fb_info)
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+		fbcon_remap_all(new_client->fb_info);
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 	mutex_lock(&vgasr_priv.mux_hw_lock);
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 	ret = vgasr_priv.handler->switchto(new_client->id);
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@@ -914,38 +907,20 @@
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 static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv)
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 {
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-	debugfs_remove(priv->switch_file);
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-	priv->switch_file = NULL;
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-
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-	debugfs_remove(priv->debugfs_root);
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+	debugfs_remove_recursive(priv->debugfs_root);
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 	priv->debugfs_root = NULL;
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 }
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-static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv)
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+static void vga_switcheroo_debugfs_init(struct vgasr_priv *priv)
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 {
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-	static const char mp[] = "/sys/kernel/debug";
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-
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 	/* already initialised */
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 	if (priv->debugfs_root)
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-		return 0;
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+		return;
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+
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 	priv->debugfs_root = debugfs_create_dir("vgaswitcheroo", NULL);
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-	if (!priv->debugfs_root) {
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-		pr_err("Cannot create %s/vgaswitcheroo\n", mp);
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-		goto fail;
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-	}
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-
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-	priv->switch_file = debugfs_create_file("switch", 0644,
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-						priv->debugfs_root, NULL,
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-						&vga_switcheroo_debugfs_fops);
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-	if (!priv->switch_file) {
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-		pr_err("cannot create %s/vgaswitcheroo/switch\n", mp);
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-		goto fail;
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-	}
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-	return 0;
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-fail:
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-	vga_switcheroo_debugfs_fini(priv);
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-	return -1;
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+	debugfs_create_file("switch", 0644, priv->debugfs_root, NULL,
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+			    &vga_switcheroo_debugfs_fops);
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 }
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 /**