From: Dejin Zheng Date: Sat, 4 Jan 2020 13:27:40 +0000 (+0800) Subject: usb: gadget: udc: core: Warn about failed to find udc X-Git-Tag: block-5.6-2020-02-05~32^2~55 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=1d039a80613dd8b8d95e181f918db5004bd5cc48;p=linux-block.git 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 --- diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 51fa614b4079..9b11046480fe 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);