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| author | David S. Miller <davem@davemloft.net> | 2019-11-09 11:04:37 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-09 11:04:37 -0800 |
| commit | 14684b93019a2d2ece0df5acaf921924541b928d (patch) | |
| tree | 29cf04da2f22b85b6051b47b3731e91a43d4c94d /drivers/usb/gadget/udc/core.c | |
| parent | 92da362c07d413786ab59db1665376fb63805586 (diff) | |
| parent | 0058b0a506e40d9a2c62015fe92eb64a44d78cd9 (diff) | |
| download | linux-14684b93019a2d2ece0df5acaf921924541b928d.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
One conflict in the BPF samples Makefile, some fixes in 'net' whilst
we were converting over to Makefile.target rules in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/usb/gadget/udc/core.c')
| -rw-r--r-- | drivers/usb/gadget/udc/core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 92af8dc98c3d..51fa614b4079 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -98,6 +98,17 @@ int usb_ep_enable(struct usb_ep *ep) if (ep->enabled) 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. + */ + ret = -EINVAL; + goto out; + } + ret = ep->ops->enable(ep, ep->desc); if (ret) goto out; |