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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>
This commit is contained in:
Amit Shah 2010-05-06 02:05:09 +05:30 committed by Rusty Russell
parent 9778829cff
commit 8345adbf96
1 changed files with 12 additions and 1 deletions
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13
drivers/char/virtio_console.c
View File

@ -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);