Commit b7df41a6 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski
Browse files

gpio: mockup: fix NULL pointer dereference when removing debugfs 



We now remove the device's debugfs entries when unbinding the driver.
This now causes a NULL-pointer dereference on module exit because the
platform devices are unregistered *after* the global debugfs directory
has been recursively removed. Fix it by unregistering the devices first.

Fixes: 303e6da9 ("gpio: mockup: remove gpio debugfs when remove device")
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
parent 521a547c

drivers/gpio/gpio-mockup.c

+1 −1
Original line number Diff line number Diff line
@@ -597,9 +597,9 @@ static int __init gpio_mockup_init(void) 


static void __exit gpio_mockup_exit(void)

{

	gpio_mockup_unregister_pdevs();

	debugfs_remove_recursive(gpio_mockup_dbg_dir);

	platform_driver_unregister(&gpio_mockup_driver);

	gpio_mockup_unregister_pdevs();

}



module_init(gpio_mockup_init);