[PATCH] usb-storage: fix oops

It should fix the OOPS on attach.

This fixes a silly error where I fail to initialize a pointer early enough
for the scanning code.  If this isn't a perfect example of why
scsi_register() and scsi_add_host() aren't two separate functions, I don't
know what is.  :)

Oh, and I added a couple of comments, too.

  -  Fix an OOPS by moving the setting of the hostdata[] pointer to _before_
     the device scan starts.

drivers/usb/storage/usb.c

@@ -926,6 +926,12 @@ static int storage_probe(struct usb_interface *intf,
 		goto BadDevice;
 	}
 
+	/* set the hostdata to prepare for scanning */
+	ss->host->hostdata[0] = (unsigned long)ss;
+
+	/* associate this host with our interface */
+	scsi_set_device(ss->host, &intf->dev);
+
 	/* now add the host */
 	result = scsi_add_host(ss->host, NULL);
 	if (result) {
@@ -942,9 +948,6 @@ static int storage_probe(struct usb_interface *intf,
 		goto BadDevice;
 	}
 
-	ss->host->hostdata[0] = (unsigned long)ss;
-	scsi_set_device(ss->host, &intf->dev);
-
 	printk(KERN_DEBUG 
 	       "WARNING: USB Mass Storage data integrity not assured\n");
 	printk(KERN_DEBUG