virtio: console: Fix type of 'len' as unsigned int

We declare 'len' as int type but it should be 'unsigned int', as
get_buf() wants it to be.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reported-by: Juan Quintela <quintela@redhat.com>

Amit Shah 604b2ad7 eaa5eec7

+1 -1
+1 -1
drivers/char/virtio_console.c
··· 379 379 struct scatterlist sg[1]; 380 380 struct virtio_console_control cpkt; 381 381 struct virtqueue *vq; 382 - int len; 382 + unsigned int len; 383 383 384 384 if (!use_multiport(port->portdev)) 385 385 return 0;