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    Contents of /trunk/kernel26-magellan/patches-2.6.16-r10/0102-2.6.16.12-gpio.patch

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    Revision 70 - (show annotations) (download)
    Thu May 11 19:09:22 2006 UTC (18 years ago) by niro
    File size: 1485 byte(s) 
    import
    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);