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Commit 6dc69f97 authored by Amit Shah's avatar Amit Shah Committed by Rusty Russell
Browse files

virtio: console: Return -EPIPE to hvc_console if we lost the connection 



hvc_console handles -EPIPE properly when the connection to the host is
lost.

Signed-off-by: default avatarAmit Shah <amit.shah@redhat.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent eaeff960

drivers/char/virtio_console.c

+6 −2
Original line number Original line Diff line number Diff line
@@ -653,7 +653,7 @@ static int put_chars(u32 vtermno, const char *buf, int count) 




	port = find_port_by_vtermno(vtermno);

	port = find_port_by_vtermno(vtermno);

	if (!port)

	if (!port)

		return 0;

		return -EPIPE;





	return send_buf(port, (void *)buf, count);

	return send_buf(port, (void *)buf, count);

}

}
@@ -669,9 +669,13 @@ static int get_chars(u32 vtermno, char *buf, int count) 
{

{

	struct port *port;

	struct port *port;





	/* If we've not set up the port yet, we have no input to give. */

	if (unlikely(early_put_chars))

		return 0;



	port = find_port_by_vtermno(vtermno);

	port = find_port_by_vtermno(vtermno);

	if (!port)

	if (!port)

		return 0;

		return -EPIPE;





	/* If we don't have an input queue yet, we can't get input. */

	/* If we don't have an input queue yet, we can't get input. */

	BUG_ON(!port->in_vq);

	BUG_ON(!port->in_vq);