Commit 403a85ff authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

xen/hvc: only notify if we actually sent something 



Don't spam dom0/xenconsoled with events unless we've actually added
something to the ring.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 3654581e

drivers/char/hvc_xen.c

+2 −1
Original line number Diff line number Diff line
@@ -74,6 +74,7 @@ static int __write_console(const char *data, int len) 
	wmb();			/* write ring before updating pointer */

	intf->out_prod = prod;



	if (sent)

		notify_daemon();

	return sent;

}