Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4384a3fae10c1badb859d2c98a6d2944b14609f6
Commit: 4384a3fae10c1badb859d2c98a6d2944b14609f6
Parent: 57fedc7ae5f712c9c24f5baf30a0fbf38c1bda20
Author: Jiri Slaby <[EMAIL PROTECTED]>
AuthorDate: Thu Oct 18 03:06:28 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Oct 18 14:37:27 2007 -0700
Char: rocket, remove potential leak in module_init
if (controller && !request_region) then we leaked a tty driver struct, fix
it
by adding function deinit tail with goto-ing into it (and from other fail
paths too)
Signed-off-by: Jiri Slaby <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/char/rocket.c | 34 ++++++++++++++++++++--------------
1 files changed, 20 insertions(+), 14 deletions(-)
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index ffcd8b4..abe3ad0 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -2359,14 +2359,14 @@ static const struct tty_operations rocket_ops = {
*/
static int __init rp_init(void)
{
- int retval, pci_boards_found, isa_boards_found, i;
+ int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
ROCKET_VERSION, ROCKET_DATE);
rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
if (!rocket_driver)
- return -ENOMEM;
+ goto err;
/*
* If board 1 is non-zero, there is at least one ISA configured. If
controller is
@@ -2381,8 +2381,11 @@ static int __init rp_init(void)
/* If an ISA card is configured, reserve the 4 byte IO space for the
Mudbac controller */
if (controller && (!request_region(controller, 4, "Comtrol
RocketPort"))) {
- printk(KERN_INFO "Unable to reserve IO region for first
configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
- return -EBUSY;
+ printk(KERN_ERR "Unable to reserve IO region for first "
+ "configured ISA RocketPort controller 0x%lx. "
+ "Driver exiting\n", controller);
+ ret = -EBUSY;
+ goto err_tty;
}
/* Store ISA variable retrieved from command line or .conf file. */
@@ -2423,11 +2426,10 @@ static int __init rp_init(void)
#endif
tty_set_operations(rocket_driver, &rocket_ops);
- retval = tty_register_driver(rocket_driver);
- if (retval < 0) {
- printk(KERN_INFO "Couldn't install tty RocketPort driver (error
%d)\n", -retval);
- put_tty_driver(rocket_driver);
- return -1;
+ ret = tty_register_driver(rocket_driver);
+ if (ret < 0) {
+ printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
+ goto err_tty;
}
#ifdef ROCKET_DEBUG_OPEN
@@ -2454,14 +2456,18 @@ static int __init rp_init(void)
max_board = pci_boards_found + isa_boards_found;
if (max_board == 0) {
- printk(KERN_INFO "No rocketport ports found; unloading
driver.\n");
- del_timer_sync(&rocket_timer);
- tty_unregister_driver(rocket_driver);
- put_tty_driver(rocket_driver);
- return -ENXIO;
+ printk(KERN_ERR "No rocketport ports found; unloading
driver\n");
+ ret = -ENXIO;
+ goto err_ttyu;
}
return 0;
+err_ttyu:
+ tty_unregister_driver(rocket_driver);
+err_tty:
+ put_tty_driver(rocket_driver);
+err:
+ return ret;
}
-
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