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| author | Amit Shah <amit.shah@redhat.com> | 2010-05-19 22:15:46 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-05-19 22:15:46 +0930 |
| commit | 3425e706bf6faa2965c4e99f39085f7367a8f4e2 (patch) | |
| tree | 5c7dbbb262edcaff27ae8bbe299b538bf1dad36f /drivers/char/virtio_console.c | |
| parent | b99fa815d71023b2e330d63cd7f47d6247ffa321 (diff) | |
| download | lwn-3425e706bf6faa2965c4e99f39085f7367a8f4e2.tar.gz lwn-3425e706bf6faa2965c4e99f39085f7367a8f4e2.zip | |
virtio: console: Add a __send_control_msg() that can send messages without a valid port
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 <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/char/virtio_console.c')
| -rw-r--r-- | drivers/char/virtio_console.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index e53c52b904fb..8c24b86aadc9 100644 --- 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 port *port, unsigned int event, 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]; |