Add sanity checks for cport_quiesce and cport_clear before invoking the callbacks as these function pointers are not required during the host device registration. This follows the logic implemented elsewhere for various other function pointers.

Signed-off-by: Jason Hrycay jhrycay@gmail.com --- drivers/staging/greybus/connection.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c index 833f83b..aa040b1 100644 --- a/drivers/staging/greybus/connection.c +++ b/drivers/staging/greybus/connection.c @@ -358,6 +358,9 @@ static int gb_connection_hd_cport_quiesce(struct gb_connection *connection) size_t peer_space; int ret;

+ if (!hd->driver->cport_quiesce) + return 0; + peer_space = sizeof(struct gb_operation_msg_hdr) + sizeof(struct gb_cport_shutdown_request);

@@ -381,6 +384,9 @@ static int gb_connection_hd_cport_clear(struct gb_connection *connection) struct gb_host_device *hd = connection->hd; int ret;

+ if (!hd->driver->cport_clear) + return 0; + ret = hd->driver->cport_clear(hd, connection->hd_cport_id); if (ret) { dev_err(&hd->dev, "%s: failed to clear host cport: %d\n",