if (!button) return_ACPI_STATUS(AE_BAD_PARAMETER); 
BUG_ON(!button); 
acpi_button_notify_fixed (	void			*data){	struct acpi_button	*button = (struct acpi_button *) data;		ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");	if (!button)		return_ACPI_STATUS(AE_BAD_PARAMETER);	acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);	return_ACPI_STATUS(AE_OK);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/bd4698dad3023ae137b366c736e29ca6eaf3b9f7/button.c/buggy/drivers/acpi/button.c