[PATCH 2/4] usbgadget: do not register when no functions present

[Sascha Hauer]

registering a multifunction device makes only sense when there's
at least one function configured. Just return otherwise.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/usb/gadget/autostart.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/gadget/autostart.c b/drivers/usb/gadget/autostart.c
index 3fa43137fa..a27be899c3 100644
--- a/drivers/usb/gadget/autostart.c
+++ b/drivers/usb/gadget/autostart.c
@@ -55,6 +55,10 @@ static int usbgadget_autostart(void)
 
 	opts->create_acm = acm;
 
+	if (!opts->fastboot_opts.files && !opts->create_acm) {
+		pr_warn("No functions to register\n");
+		return 0;
+	}
 
 	ret = usb_multi_register(opts);
 	if (ret)
-- 
2.11.0