[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>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c
index d8d0f28e0acf..e3239833e4b0 100644
--- a/drivers/char/watchdog/sc1200wdt.c
+++ b/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 @@ out_rbt:
 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;
 }