virtio: console: Add a __send_control_msg() that can send messages without a valid port From: Amit Shah We will introduce control messages that operate on the device as a whole rather than just ports. Make send_control_msg() a wrapper around __send_control_msg() which does not need a valid port. Signed-off-by: Amit Shah Signed-off-by: Rusty Russell --- drivers/char/virtio_console.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -374,22 +374,22 @@ out: return ret; } -static ssize_t send_control_msg(struct port *port, unsigned int event, - unsigned int value) +static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id, + unsigned int event, unsigned int value) { struct scatterlist sg[1]; struct virtio_console_control cpkt; struct virtqueue *vq; unsigned int len; - if (!use_multiport(port->portdev)) + if (!use_multiport(portdev)) return 0; - cpkt.id = port->id; + cpkt.id = port_id; cpkt.event = event; cpkt.value = value; - vq = port->portdev->c_ovq; + vq = portdev->c_ovq; sg_init_one(sg, &cpkt, sizeof(cpkt)); if (virtqueue_add_buf(vq, sg, 1, 0, &cpkt) >= 0) { @@ -400,6 +400,12 @@ static ssize_t send_control_msg(struct p return 0; } +static ssize_t send_control_msg(struct port *port, unsigned int event, + unsigned int value) +{ + return __send_control_msg(port->portdev, port->id, event, value); +} + static ssize_t send_buf(struct port *port, void *in_buf, size_t in_count) { struct scatterlist sg[1];