[PATCH] Watchdog: sc1200wdt - fix missing pnp_unregister_driver()

[WATCHDOG] sc1200wdt.c pnp unregister fix.

If no devices found or invalid parameter is specified,
scl200wdt_pnp_driver is left unregistered.
It breaks global list of pnp drivers.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

drivers/char/watchdog/sc1200wdt.c

@@ -392,7 +392,7 @@ static int __init sc1200wdt_init(void)
 	if (io == -1) {
 		printk(KERN_ERR PFX "io parameter must be specified\n");
 		ret = -EINVAL;
-		goto out_clean;
+		goto out_pnp;
 	}
 
 #if defined CONFIG_PNP
@@ -405,7 +405,7 @@ static int __init sc1200wdt_init(void)
 	if (!request_region(io, io_len, SC1200_MODULE_NAME)) {
 		printk(KERN_ERR PFX "Unable to register IO port %#x\n", io);
 		ret = -EBUSY;
-		goto out_clean;
+		goto out_pnp;
 	}
 
 	ret = sc1200wdt_probe();
@@ -435,6 +435,11 @@ static int __init sc1200wdt_init(void)
 out_io:
 	release_region(io, io_len);
 
+out_pnp:
+#if defined CONFIG_PNP
+	if (isapnp)
+		pnp_unregister_driver(&scl200wdt_pnp_driver);
+#endif
 	goto out_clean;
 }