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path: root/drivers/usb/gadget/udc/core.c
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Diffstat (limited to 'drivers/usb/gadget/udc/core.c')
-rw-r--r--drivers/usb/gadget/udc/core.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index b0a613758414..cf6478f97f4a 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -118,12 +118,10 @@ int usb_ep_enable(struct usb_ep *ep)
goto out;
/* UDC drivers can't handle endpoints with maxpacket size 0 */
- if (usb_endpoint_maxp(ep->desc) == 0) {
- /*
- * We should log an error message here, but we can't call
- * dev_err() because there's no way to find the gadget
- * given only ep.
- */
+ if (!ep->desc || usb_endpoint_maxp(ep->desc) == 0) {
+ WARN_ONCE(1, "%s: ep%d (%s) has %s\n", __func__, ep->address, ep->name,
+ (!ep->desc) ? "NULL descriptor" : "maxpacket 0");
+
ret = -EINVAL;
goto out;
}