ioc3/ioc4: fix error path on driver registration

Two IOC3 and IOC4 drivers have broken error paths on registration.  Fix
them.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Pat Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 14 insertions, 4 deletions

diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index 902b067d7e9c..836d9ab4f729 100644
--- a/drivers/serial/ioc4_serial.c
+++ b/drivers/serial/ioc4_serial.c
@@ -2913,17 +2913,27 @@ static int __init ioc4_serial_init(void)
                 printk(KERN_WARNING
                         "%s: Couldn't register rs232 IOC4 serial driver\n",
                         __func__);
-                return ret;
+                goto out;
         }
         if ((ret = uart_register_driver(&ioc4_uart_rs422)) < 0) {
                 printk(KERN_WARNING
                         "%s: Couldn't register rs422 IOC4 serial driver\n",
                         __func__);
-                return ret;
+                goto out_uart_rs232;
         }
 
         /* register with IOC4 main module */
-        return ioc4_register_submodule(&ioc4_serial_submodule);
+        ret = ioc4_register_submodule(&ioc4_serial_submodule);
+        if (ret)
+                goto out_uart_rs422;
+        return 0;
+
+out_uart_rs422:
+        uart_unregister_driver(&ioc4_uart_rs422);
+out_uart_rs232:
+        uart_unregister_driver(&ioc4_uart_rs232);
+out:
+        return ret;
 }
 
 static void __exit ioc4_serial_exit(void)
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index 354e9f17e35a..66802a4390cc 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -820,7 +820,7 @@ static int __init ioc3_init(void)
 {
         if (ia64_platform_is("sn2"))
                 return pci_register_driver(&ioc3_driver);
-        return 0;
+        return -ENODEV;
 }
 
 /* Module unload */