The cport_quiesce() method is mandatory in the case of the es2 Greybus hd controller to shutdown the cports on the es2 controller. In order to add support of another controller which may not need to shutdown its cports, make the cport_quiesce() optional, and check if the controller implement it before to use it. Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx> --- drivers/staging/greybus/connection.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c index 1bf0ee4..2cf6464 100644 --- a/drivers/staging/greybus/connection.c +++ b/drivers/staging/greybus/connection.c @@ -366,6 +366,9 @@ static int gb_connection_hd_cport_quiesce(struct gb_connection *connection) if (connection->mode_switch) peer_space += sizeof(struct gb_operation_msg_hdr); + if (!hd->driver->cport_quiesce) + return 0; + ret = hd->driver->cport_quiesce(hd, connection->hd_cport_id, peer_space, GB_CONNECTION_CPORT_QUIESCE_TIMEOUT); -- 2.10.2 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
