Commit 8345adbf authored May 06, 2010 by Amit Shah Committed by Rusty Russell May 19, 2010

virtio: console: Accept console size along with resize control message



The VIRTIO_CONSOLE_RESIZE control message sent to us by the host now
contains the new {rows, cols} values for the console. This ensures each
console port gets its own size, and we don't depend on the config-space
rows and cols values at all now.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Christian Borntraeger <borntraeger@de.ibm.com>
CC: linuxppc-dev@ozlabs.org
CC: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent 9778829c

drivers/char/virtio_console.c

+12 −1

Original line number	Diff line number	Diff line
		@@ -1194,12 +1194,23 @@ static void handle_control_message(struct ports_device *portdev,
		* have to notify the host first.
		*/
		break;
		case VIRTIO_CONSOLE_RESIZE:
		case VIRTIO_CONSOLE_RESIZE: {
		struct {
		__u16 rows;
		__u16 cols;
		} size;

		if (!is_console_port(port))
		break;

		memcpy(&size, buf->buf + buf->offset + sizeof(*cpkt),
		sizeof(size));
		set_console_size(port, size.rows, size.cols);

		port->cons.hvc->irq_requested = 1;
		resize_console(port);
		break;
		}
		case VIRTIO_CONSOLE_PORT_OPEN:
		port->host_connected = cpkt->value;
		wake_up_interruptible(&port->waitqueue);