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ACPI / button: remove pointer to old lid_sysfs on unbind

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When we removed the procfs dir on error or if the driver is
unbound, the two variables acpi_lid_dir and acpi_button_dir
were not reset. On the next rebind, those static variables
were not null and we couldn't re-register the device again.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Benjamin Tissoires 2016-07-29 17:08:41 +02:00 committed by Rafael J. Wysocki
parent 3540c32a9a
commit e370cc8640
1 changed files with 4 additions and 0 deletions
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4
drivers/acpi/button.c
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@ -232,8 +232,10 @@ static int acpi_button_add_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
remove_lid_dir:
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
acpi_lid_dir = NULL;
remove_button_dir:
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
acpi_button_dir = NULL;
goto done;
}
@ -250,7 +252,9 @@ static int acpi_button_remove_fs(struct acpi_device *device)
acpi_lid_dir);
acpi_device_dir(device) = NULL;
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
acpi_lid_dir = NULL;
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
acpi_button_dir = NULL;
return 0;
}