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 <[email protected]> --- drivers/acpi/button.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 5c3b091..e413599 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -188,9 +188,11 @@ done: remove_dev_dir: remove_proc_entry(acpi_device_bid(device), acpi_lid_dir); + acpi_lid_dir = NULL; acpi_device_dir(device) = NULL; remove_lid_dir: remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); + acpi_button_dir = NULL; remove_button_dir: remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); goto done; @@ -207,8 +209,10 @@ static int acpi_button_remove_fs(struct acpi_device *device) acpi_device_dir(device)); remove_proc_entry(acpi_device_bid(device), acpi_lid_dir); + acpi_lid_dir = NULL; acpi_device_dir(device) = NULL; remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); + acpi_button_dir = NULL; remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); return 0; -- 2.5.5
