static int pnp_dock_thread()

in pnpbios/core.c [139:187]

• 38 lines of code
• 9 McCabe index (conditional complexity)

static int pnp_dock_thread(void *unused)
{
	static struct pnp_docking_station_info now;
	int docked = -1, d = 0;

	set_freezable();
	while (1) {
		int status;

		/*
		 * Poll every 2 seconds
		 */
		msleep_interruptible(2000);

		if (try_to_freeze())
			continue;

		status = pnp_bios_dock_station_info(&now);

		switch (status) {
			/*
			 * No dock to manage
			 */
		case PNP_FUNCTION_NOT_SUPPORTED:
			kthread_complete_and_exit(&unload_sem, 0);
		case PNP_SYSTEM_NOT_DOCKED:
			d = 0;
			break;
		case PNP_SUCCESS:
			d = 1;
			break;
		default:
			pnpbios_print_status("pnp_dock_thread", status);
			printk(KERN_WARNING "PnPBIOS: disabling dock monitoring.\n");
			kthread_complete_and_exit(&unload_sem, 0);
		}
		if (d != docked) {
			if (pnp_dock_event(d, &now) == 0) {
				docked = d;
#if 0
				printk(KERN_INFO
				       "PnPBIOS: Docking station %stached\n",
				       docked ? "at" : "de");
#endif
			}
		}
	}
	kthread_complete_and_exit(&unload_sem, 0);
}