gadget/function/u_serial.c

874 	struct gs_console *cons = req->context;
883 		spin_lock(&cons->lock);
885 		schedule_work(&cons->work);
886 		spin_unlock(&cons->lock);
896 static void __gs_console_push(struct gs_console *cons)
898 	struct usb_request *req = cons->req;
908 	ep = cons->console.data;
909 	size = kfifo_out(&cons->buf, req->buf, ep->maxpacket);
913 	if (cons->missed && ep->maxpacket >= 64) {
917 		len = sprintf(buf, "\n[missed %zu bytes]\n", cons->missed);
918 		kfifo_in(&cons->buf, buf, len);
919 		cons->missed = 0;
924 	spin_unlock_irq(&cons->lock);
927 	spin_lock_irq(&cons->lock);
932 	struct gs_console *cons = container_of(work, struct gs_console, work);
934 	spin_lock_irq(&cons->lock);
936 	__gs_console_push(cons);
938 	spin_unlock_irq(&cons->lock);
944 	struct gs_console *cons = container_of(co, struct gs_console, console);
948 	spin_lock_irqsave(&cons->lock, flags);
950 	n = kfifo_in(&cons->buf, buf, count);
952 		cons->missed += count - n;
954 	if (cons->req && !cons->req->length)
955 		schedule_work(&cons->work);
957 	spin_unlock_irqrestore(&cons->lock, flags);
968 	struct gs_console *cons = port->console;
972 	if (!cons)
980 	req->context = cons;
983 	spin_lock(&cons->lock);
984 	cons->req = req;
985 	cons->console.data = ep;
986 	spin_unlock(&cons->lock);
990 	schedule_work(&cons->work);
997 	struct gs_console *cons = port->console;
1001 	if (!cons)
1004 	spin_lock(&cons->lock);
1006 	req = cons->req;
1007 	ep = cons->console.data;
1008 	cons->req = NULL;
1010 	spin_unlock(&cons->lock);
1021 	struct gs_console *cons;
1027 	cons = kzalloc(sizeof(*port->console), GFP_KERNEL);
1028 	if (!cons)
1031 	strcpy(cons->console.name, "ttyGS");
1032 	cons->console.write = gs_console_write;
1033 	cons->console.device = gs_console_device;
1034 	cons->console.flags = CON_PRINTBUFFER;
1035 	cons->console.index = port->port_num;
1037 	INIT_WORK(&cons->work, gs_console_work);
1038 	spin_lock_init(&cons->lock);
1040 	err = kfifo_alloc(&cons->buf, GS_CONSOLE_BUF_SIZE, GFP_KERNEL);
1043 		kfree(cons);
1047 	port->console = cons;
1048 	register_console(&cons->console);
1060 	struct gs_console *cons = port->console;
1062 	if (!cons)
1065 	unregister_console(&cons->console);
1068 	if (cons->req)
1072 	cancel_work_sync(&cons->work);
1073 	kfifo_free(&cons->buf);
1074 	kfree(cons);