[PATCH] Input: i8042 add of_node_put()

[Yangtao Li]

use of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
---
 drivers/input/serio/i8042-sparcio.h | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/input/serio/i8042-sparcio.h 
b/drivers/input/serio/i8042-sparcio.h
index 796289846204..5495bc035518 100644
--- a/drivers/input/serio/i8042-sparcio.h
+++ b/drivers/input/serio/i8042-sparcio.h
@@ -108,18 +108,21 @@ static struct platform_driver sparc_i8042_driver = {
 
 static int __init i8042_platform_init(void)
 {
+       int rc;
        struct device_node *root = of_find_node_by_path("/");
 
        if (!strcmp(root->name, "SUNW,JavaStation-1")) {
                /* Hardcoded values for MrCoffee.  */
                i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
                kbd_iobase = ioremap(0x71300060, 8);
-               if (!kbd_iobase)
-                       return -ENODEV;
+               if (!kbd_iobase){
+                       rc = -ENODEV;
+                       goto out;
+               }
        } else {
-               int err = platform_driver_register(&sparc_i8042_driver);
-               if (err)
-                       return err;
+               rc = platform_driver_register(&sparc_i8042_driver);
+               if (rc)
+                       goto out;
 
                if (i8042_kbd_irq == -1 ||
                    i8042_aux_irq == -1) {
@@ -127,13 +130,18 @@ static int __init i8042_platform_init(void)
                                of_iounmap(kbd_res, kbd_iobase, 8);
                                kbd_iobase = (void __iomem *) NULL;
                        }
-                       return -ENODEV;
+                       rc = -ENODEV;
+                       goto out;
                }
        }
 
        i8042_reset = I8042_RESET_ALWAYS;
 
-       return 0;
+       rc = 0;
+out:
+       of_node_put(root);
+
+       return rc;
 }
 
 static inline void i8042_platform_exit(void)
@@ -142,6 +150,8 @@ static inline void i8042_platform_exit(void)
 
        if (strcmp(root->name, "SUNW,JavaStation-1"))
                platform_driver_unregister(&sparc_i8042_driver);
+
+       of_node_put(root);
 }
 
 #else /* !CONFIG_PCI */
-- 
2.17.0