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virtio: console: Send SIGIO on new data arrival on ports 

Send a SIGIO signal when new data arrives on a port. This is sent only
when the process has requested for the signal to be sent using fcntl().

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
hifive-unleashed-5.1
Amit Shah 2010-09-02 18:47:53 +05:30 committed by Rusty Russell
parent 3eae0adea9
commit 55f6bcce36
1 changed files with 3 additions and 0 deletions
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3
drivers/char/virtio_console.c
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@ -1483,6 +1483,9 @@ static void in_intr(struct virtqueue *vq)
wake_up_interruptible(&port->waitqueue);
/* Send a SIGIO indicating new data in case the process asked for it */
send_sigio_to_port(port);
if (is_console_port(port) && hvc_poll(port->cons.hvc))
hvc_kick();
}