Re: [PATCH] release_region in RocketPort char driver

[Felipe W Damasio <felipewd@terra.com.br>]

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	Hi Andrew,

Andrew Morton wrote:
> Felipe W Damasio <felipewd@terra.com.br> wrote:
> a) If variable `controller' is zero then we never allocated this region,
>    so we should not free it.
> 
> b) There is an error exit path further on which also needs to release
>    this region (if controller != 0).

	Right.

	Please review this patch, then.

	Against 2.6.0-test7.

	Thanks,

Felipe

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--- linux-2.6.0-test7/drivers/char/rocket.c.orig	2003-10-14 11:38:44.000000000 -0200
+++ linux-2.6.0-test7/drivers/char/rocket.c	2003-10-14 11:42:40.000000000 -0200
@@ -2466,6 +2466,8 @@
 	if (retval < 0) {
 		printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
 		put_tty_driver(rocket_driver);
+		if (controller)
+			release_region (controller, 4);
 		return -1;
 	}
 
@@ -2497,6 +2499,8 @@
 		del_timer_sync(&rocket_timer);
 		tty_unregister_driver(rocket_driver);
 		put_tty_driver(rocket_driver);
+		if (controller) 
+			release_region (controller, 4);
 		return -ENXIO;
 	}