tty/hvc/hvc_xen.c

87 static ssize_t __write_console(struct xencons_info *xencons,
91 	struct xencons_interface *intf = xencons->intf;
95 	spin_lock_irqsave(&xencons->ring_lock, flags);
101 		spin_unlock_irqrestore(&xencons->ring_lock, flags);
102 		pr_err_once("xencons: Illegal ring page indices");
111 	spin_unlock_irqrestore(&xencons->ring_lock, flags);
114 		notify_daemon(xencons);
152 	struct xencons_info *xencons = vtermno_to_xencons(vtermno);
157 	if (xencons == NULL)
159 	intf = xencons->intf;
161 	spin_lock_irqsave(&xencons->ring_lock, flags);
167 		spin_unlock_irqrestore(&xencons->ring_lock, flags);
168 		pr_err_once("xencons: Illegal ring page indices");
184 	 *   updating xencons->out_cons, so account for that by allowing one
187 	if (intf->out_cons != xencons->out_cons) {
188 		xencons->out_cons = intf->out_cons;
189 		xencons->out_cons_same = 0;
191 	if (!recv && xencons->out_cons_same++ > 1) {
194 	spin_unlock_irqrestore(&xencons->ring_lock, flags);
197 		notify_daemon(xencons);
200 	xen_irq_lateeoi(xencons->irq, eoiflag);