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| author | Robert Baldyga <r.baldyga@samsung.com> | 2015-09-16 12:10:41 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-09-27 17:54:31 +0200 |
| commit | b67f628c84329a9ce82dbff5fde196dc4624e7c2 (patch) | |
| tree | 14bbbf906d163b939af759623c55f15c34582ac4 | |
| parent | usb: gadget: f_ncm: obtain cdev from function instead of driver_data (diff) | |
| download | linux-b67f628c84329a9ce82dbff5fde196dc4624e7c2.tar.xz linux-b67f628c84329a9ce82dbff5fde196dc4624e7c2.zip | |
usb: gadget: epautoconf: add usb_ep_autoconfig_release() function
This patch introduces usb_ep_autoconfig_release() function which allows
to release endpoint previously obtained from usb_ep_autoconfig() during
USB function bind.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/gadget/epautoconf.c | 17 | ||||
| -rw-r--r-- | include/linux/usb/gadget.h | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 0f4ece44d703..30fdab0ae383 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -172,6 +172,23 @@ struct usb_ep *usb_ep_autoconfig( EXPORT_SYMBOL_GPL(usb_ep_autoconfig); /** + * usb_ep_autoconfig_release - releases endpoint and set it to initial state + * @ep: endpoint which should be released + * + * This function can be used during function bind for endpoints obtained + * from usb_ep_autoconfig(). It unclaims endpoint claimed by + * usb_ep_autoconfig() to make it available for other functions. Endpoint + * which was released is no longer invalid and shouldn't be used in + * context of function which released it. + */ +void usb_ep_autoconfig_release(struct usb_ep *ep) +{ + ep->claimed = false; + ep->driver_data = NULL; +} +EXPORT_SYMBOL_GPL(usb_ep_autoconfig_release); + +/** * usb_ep_autoconfig_reset - reset endpoint autoconfig state * @gadget: device for which autoconfig state will be reset * diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index c14a69b36d27..3f299e2b6942 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -1233,6 +1233,8 @@ 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 */ |