Contents of /trunk/kernel26-magellan/patches-2.6.16-r12/0102-2.6.16.12-gpio.patch
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Mon Jun 5 09:25:38 2006 UTC (18 years, 3 months ago) by niro
File size: 1485 byte(s)
Mon Jun 5 09:25:38 2006 UTC (18 years, 3 months ago) by niro
File size: 1485 byte(s)
ver bump to 2.6.16-r12: - updated to linux-2.6.16.19 - updated to ck11
1 | From: Thayumanavar Sachithanantham <thayumk@gmail.com> |
2 | Date: Thu, 20 Apr 2006 16:00:56 +0000 (+0000) |
3 | Subject: [PATCH] cs5535_gpio.c: call cdev_del() during module_exit to unmap kobject references ... |
4 | X-Git-Url: http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.16.y.git;a=commitdiff;h=f1e64a332ce7e00d5e5fa25e505e54dff3049ddc |
5 | |
6 | [PATCH] cs5535_gpio.c: call cdev_del() during module_exit to unmap kobject references and other cleanups |
7 | |
8 | During module unloading, cdev_del() must be called to unmap cdev related |
9 | kobject references and other cleanups(such as inode->i_cdev being set to |
10 | NULL) which prevents the OOPS upon subsequent loading, usage and unloading |
11 | of modules(as seen in the mail thread |
12 | http://marc.theaimsgroup.com/?l=linux-kernel&m=114533640609018&w=2). |
13 | |
14 | Also, remove unneeded test of gpio_base. |
15 | |
16 | Signed-off-by: Thayumanavar Sachithanantham <thayumk@gmail.com> |
17 | Signed-off-by: Andrew Morton <akpm@osdl.org> |
18 | Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
19 | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
20 | --- |
21 | |
22 | --- a/drivers/char/cs5535_gpio.c |
23 | +++ b/drivers/char/cs5535_gpio.c |
24 | @@ -241,9 +241,10 @@ static int __init cs5535_gpio_init(void) |
25 | static void __exit cs5535_gpio_cleanup(void) |
26 | { |
27 | dev_t dev_id = MKDEV(major, 0); |
28 | + |
29 | + cdev_del(&cs5535_gpio_cdev); |
30 | unregister_chrdev_region(dev_id, CS5535_GPIO_COUNT); |
31 | - if (gpio_base != 0) |
32 | - release_region(gpio_base, CS5535_GPIO_SIZE); |
33 | + release_region(gpio_base, CS5535_GPIO_SIZE); |
34 | } |
35 | |
36 | module_init(cs5535_gpio_init); |