[PATCH] drivers/char/lcd.c: misc_register() can fail

Signed-off-by: Christophe Lucas <clucas@rotomalug.org>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/lcd.c b/drivers/char/lcd.c
index cf01a72..b771611 100644 (file)
--- a/drivers/char/lcd.c
+++ b/drivers/char/lcd.c
@@ -613,10 +613,15 @@ static struct miscdevice lcd_dev = {
 
 static int lcd_init(void)
 {
+       int ret;
        unsigned long data;
 
        pr_info("%s\n", LCD_DRIVER);
-       misc_register(&lcd_dev);
+       ret = misc_register(&lcd_dev);
+       if (ret) {
+               printk(KERN_WARNING LCD "Unable to register misc device.\n");
+               return ret;
+       }
 
        /* Check region? Naaah! Just snarf it up. */
 /*     request_region(RTC_PORT(0), RTC_IO_EXTENT, "lcd");*/