proc: remove proc_bus

Remove proc_bus export and variable itself. Using pathnames works fine
and is slightly more understandable and greppable.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/input/input.c b/drivers/input/input.c
index f02c242..1142660 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -898,7 +898,7 @@
 {
 	struct proc_dir_entry *entry;
 
-	proc_bus_input_dir = proc_mkdir("input", proc_bus);
+	proc_bus_input_dir = proc_mkdir("bus/input", NULL);
 	if (!proc_bus_input_dir)
 		return -ENOMEM;
 
@@ -921,7 +921,7 @@
 	return 0;
 
  fail2:	remove_proc_entry("devices", proc_bus_input_dir);
- fail1: remove_proc_entry("input", proc_bus);
+ fail1: remove_proc_entry("bus/input", NULL);
 	return -ENOMEM;
 }
 
@@ -929,7 +929,7 @@
 {
 	remove_proc_entry("devices", proc_bus_input_dir);
 	remove_proc_entry("handlers", proc_bus_input_dir);
-	remove_proc_entry("input", proc_bus);
+	remove_proc_entry("bus/input", NULL);
 }
 
 #else /* !CONFIG_PROC_FS */
diff --git a/drivers/nubus/proc.c b/drivers/nubus/proc.c
index e07492b..cb83ace 100644
--- a/drivers/nubus/proc.c
+++ b/drivers/nubus/proc.c
@@ -171,7 +171,7 @@
 {
 	if (!MACH_IS_MAC)
 		return;
-	proc_bus_nubus_dir = proc_mkdir("nubus", proc_bus);
+	proc_bus_nubus_dir = proc_mkdir("bus/nubus", NULL);
 	create_proc_info_entry("devices", 0, proc_bus_nubus_dir,
 				get_nubus_dev_info);
 	proc_bus_nubus_add_devices();
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index ef18fcd..7b5e45b 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -472,7 +472,7 @@
 {
 	struct proc_dir_entry *entry;
 	struct pci_dev *dev = NULL;
-	proc_bus_pci_dir = proc_mkdir("pci", proc_bus);
+	proc_bus_pci_dir = proc_mkdir("bus/pci", NULL);
 	entry = create_proc_entry("devices", 0, proc_bus_pci_dir);
 	if (entry)
 		entry->proc_fops = &proc_bus_pci_dev_operations;
diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c
index 2b8266c..e1d1f2a 100644
--- a/drivers/pnp/isapnp/proc.c
+++ b/drivers/pnp/isapnp/proc.c
@@ -116,7 +116,7 @@
 {
 	struct pnp_dev *dev;
 
-	isapnp_proc_bus_dir = proc_mkdir("isapnp", proc_bus);
+	isapnp_proc_bus_dir = proc_mkdir("bus/isapnp", NULL);
 	protocol_for_each_dev(&isapnp_protocol, dev) {
 		isapnp_proc_attach_device(dev);
 	}
diff --git a/drivers/pnp/pnpbios/proc.c b/drivers/pnp/pnpbios/proc.c
index bb19bc9..46d506f 100644
--- a/drivers/pnp/pnpbios/proc.c
+++ b/drivers/pnp/pnpbios/proc.c
@@ -256,7 +256,7 @@
  */
 int __init pnpbios_proc_init(void)
 {
-	proc_pnp = proc_mkdir("pnp", proc_bus);
+	proc_pnp = proc_mkdir("bus/pnp", NULL);
 	if (!proc_pnp)
 		return -EIO;
 	proc_pnp_boot = proc_mkdir("boot", proc_pnp);
@@ -294,5 +294,5 @@
 	remove_proc_entry("configuration_info", proc_pnp);
 	remove_proc_entry("devices", proc_pnp);
 	remove_proc_entry("boot", proc_pnp);
-	remove_proc_entry("pnp", proc_bus);
+	remove_proc_entry("bus/pnp", NULL);
 }
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 8607846..1d253dd 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -773,7 +773,7 @@
 	usb_register_notify(&usbfs_nb);
 
 	/* create mount point for usbfs */
-	usbdir = proc_mkdir("usb", proc_bus);
+	usbdir = proc_mkdir("bus/usb", NULL);
 
 	return 0;
 }
@@ -783,6 +783,6 @@
 	usb_unregister_notify(&usbfs_nb);
 	unregister_filesystem(&usb_fs_type);
 	if (usbdir)
-		remove_proc_entry("usb", proc_bus);
+		remove_proc_entry("bus/usb", NULL);
 }
 
diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c
index 2ce4ceb..b7a8c7b 100644
--- a/drivers/zorro/proc.c
+++ b/drivers/zorro/proc.c
@@ -128,7 +128,7 @@
 	u_int slot;
 
 	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
-		proc_bus_zorro_dir = proc_mkdir("zorro", proc_bus);
+		proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
 		create_proc_info_entry("devices", 0, proc_bus_zorro_dir,
 				       get_zorro_dev_info);
 		for (slot = 0; slot < zorro_num_autocon; slot++)