PCI Hotplug: created /proc/bus/pci/slots for pcihpfs to be mounted on.

proc_bus_pci_dir had to be exported for this to work properly.

drivers/hotplug/pci_hotplug_core.c

@@ -39,6 +39,7 @@
 #include <linux/namei.h>
 #include <linux/pci.h>
 #include <linux/dnotify.h>
+#include <linux/proc_fs.h>
 #include <asm/uaccess.h>
 #include "pci_hotplug.h"
 
@@ -113,6 +114,12 @@ static char *pci_bus_speed_strings[] = {
 	"133 MHz PCIX 533",	/* 0x13 */
 };
 
+#ifdef CONFIG_PROC_FS		
+extern struct proc_dir_entry *proc_bus_pci_dir;
+static struct proc_dir_entry *slotdir = NULL;
+static const char *slotdir_name = "slots";
+#endif
+
 static struct inode *pcihpfs_get_inode (struct super_block *sb, int mode, int dev)
 {
 	struct inode *inode = new_inode(sb);
@@ -1265,6 +1272,11 @@ static int __init pci_hotplug_init (void)
 		goto exit;
 	}
 
+#ifdef CONFIG_PROC_FS
+	/* create mount point for pcihpfs */
+	slotdir = proc_mkdir(slotdir_name, proc_bus_pci_dir);
+#endif
+
 	info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
 
 exit:
@@ -1274,6 +1286,11 @@ static int __init pci_hotplug_init (void)
 static void __exit pci_hotplug_exit (void)
 {
 	unregister_filesystem(&pcihpfs_type);
+
+#ifdef CONFIG_PROC_FS
+	if (slotdir)
+		remove_proc_entry(slotdir_name, proc_bus_pci_dir);
+#endif
 }
 
 module_init(pci_hotplug_init);

drivers/pci/proc.c

@@ -371,7 +371,7 @@ static struct seq_operations proc_bus_pci_devices_op = {
 	show:	show_device
 };
 
-static struct proc_dir_entry *proc_bus_pci_dir;
+struct proc_dir_entry *proc_bus_pci_dir;
 
 /* driverfs files */
 static ssize_t pci_show_irq(struct device * dev, char * buf, size_t count, loff_t off)
@@ -621,5 +621,6 @@ EXPORT_SYMBOL(pci_proc_attach_device);
 EXPORT_SYMBOL(pci_proc_detach_device);
 EXPORT_SYMBOL(pci_proc_attach_bus);
 EXPORT_SYMBOL(pci_proc_detach_bus);
+EXPORT_SYMBOL(proc_bus_pci_dir);
 #endif