Re: [PATCH] release_region in RocketPort char driver
From: Felipe W Damasio
Date: Tue Oct 14 2003 - 09:42:35 EST
Hi Andrew,
Andrew Morton wrote:
Felipe W Damasio <felipewd@xxxxxxxxxxxx> 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
--- 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;
}