diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2019-11-14 15:08:49 -0800 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2019-11-14 15:08:46 -0800 |
| commit | 01c47b8a7e64cc8c598aac10887e9ce328bbb2eb (patch) | |
| tree | eaf747311dc8ca2bac9d91520297cbf8f73a0f72 /include/linux/usb | |
| parent | 39132a8d3352b23e333779ec68daec8d1ce853da (diff) | |
| parent | 4547f0febbca55057d4249dd6e4e6d509dbc2e46 (diff) | |
Merge "Merge android-4.4-p.200 (903fbe7) into msm-4.4"
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/gadget.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index b661b6e3496b..8874ed16c836 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -361,6 +361,16 @@ static inline int usb_ep_enable(struct usb_ep *ep) if (ep->enabled) return 0; + /* 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. + */ + return -EINVAL; + } + ret = ep->ops->enable(ep, ep->desc); if (ret) return ret; |