Messages in this thread Patch in this message | | | From | Dejin Zheng <> | Subject | [PATCH v2] usb: gadget: udc: core: Warn about failed to find udc | Date | Sat, 4 Jan 2020 21:27:40 +0800 |
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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 <zhengdejin5@gmail.com> ---
V2: fix some mistake in comments.
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 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); -- 2.17.1
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