From 1d039a80613dd8b8d95e181f918db5004bd5cc48 Mon Sep 17 00:00:00 2001 From: Dejin Zheng Date: Sat, 4 Jan 2020 21:27:40 +0800 Subject: [PATCH] usb: gadget: udc: core: Warn about failed to find udc If we do not warn here, the user may not know failed to find udc device by a gadget driver with the same name because it silently fails. Let's print a warning in that case so developers find these problems faster. Signed-off-by: Dejin Zheng Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 51fa614b..9b11046 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1414,6 +1414,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver) } mutex_unlock(&udc_lock); + if (ret) + pr_warn("udc-core: couldn't find an available UDC or it's busy\n"); return ret; found: ret = udc_bind_to_driver(udc, driver); -- 2.7.4