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Diffstat (limited to 'include/linux/usb/gadget.h')
-rw-r--r--include/linux/usb/gadget.h29
1 files changed, 27 insertions, 2 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index c14a69b36..3d583a10b 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -215,6 +215,7 @@ struct usb_ep {
struct list_head ep_list;
struct usb_ep_caps caps;
bool claimed;
+ bool enabled;
unsigned maxpacket:16;
unsigned maxpacket_limit:16;
unsigned max_streams:16;
@@ -264,7 +265,18 @@ static inline void usb_ep_set_maxpacket_limit(struct usb_ep *ep,
*/
static inline int usb_ep_enable(struct usb_ep *ep)
{
- return ep->ops->enable(ep, ep->desc);
+ int ret;
+
+ if (ep->enabled)
+ return 0;
+
+ ret = ep->ops->enable(ep, ep->desc);
+ if (ret)
+ return ret;
+
+ ep->enabled = true;
+
+ return 0;
}
/**
@@ -281,7 +293,18 @@ static inline int usb_ep_enable(struct usb_ep *ep)
*/
static inline int usb_ep_disable(struct usb_ep *ep)
{
- return ep->ops->disable(ep);
+ int ret;
+
+ if (!ep->enabled)
+ return 0;
+
+ ret = ep->ops->disable(ep);
+ if (ret)
+ return ret;
+
+ ep->enabled = false;
+
+ return 0;
}
/**
@@ -1233,6 +1256,8 @@ extern struct usb_ep *usb_ep_autoconfig_ss(struct usb_gadget *,
struct usb_endpoint_descriptor *,
struct usb_ss_ep_comp_descriptor *);
+extern void usb_ep_autoconfig_release(struct usb_ep *);
+
extern void usb_ep_autoconfig_reset(struct usb_gadget *);
#endif /* __LINUX_USB_GADGET_H */