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gpio: mockup: fix NULL pointer dereference when removing debugfs

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commit b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68 upstream.

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: 303e6da99429 ("gpio: mockup: remove gpio debugfs when remove device")
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2022-09-20 09:18:41 +02:00 committed by Greg Kroah-Hartman
parent bd5958ccfc
commit bdea98b98f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-mockup.c
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@ -604,9 +604,9 @@ 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);