diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/function/f_loopback.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index abfdb92bde64..79e284bba059 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -34,6 +34,9 @@ struct f_loopback { struct usb_ep *in_ep; struct usb_ep *out_ep; + + unsigned qlen; + unsigned buflen; }; static inline struct f_loopback *func_to_loop(struct usb_function *f) @@ -41,13 +44,10 @@ static inline struct f_loopback *func_to_loop(struct usb_function *f) return container_of(f, struct f_loopback, function); } -static unsigned qlen; -static unsigned buflen; - /*-------------------------------------------------------------------------*/ static struct usb_interface_descriptor loopback_intf = { - .bLength = sizeof loopback_intf, + .bLength = sizeof(loopback_intf), .bDescriptorType = USB_DT_INTERFACE, .bNumEndpoints = 2, @@ -251,7 +251,7 @@ static void loopback_complete(struct usb_ep *ep, struct usb_request *req) } /* queue the buffer for some later OUT packet */ - req->length = buflen; + req->length = loop->buflen; status = usb_ep_queue(ep, req, GFP_ATOMIC); if (status == 0) return; @@ -288,7 +288,9 @@ static void disable_loopback(struct f_loopback *loop) static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len) { - return alloc_ep_req(ep, len, buflen); + struct f_loopback *loop = ep->driver_data; + + return alloc_ep_req(ep, len, loop->buflen); } static int enable_endpoint(struct usb_composite_dev *cdev, struct f_loopback *loop, @@ -315,7 +317,7 @@ static int enable_endpoint(struct usb_composite_dev *cdev, struct f_loopback *lo * we buffer at most 'qlen' transfers; fewer if any need more * than 'buflen' bytes each. */ - for (i = 0; i < qlen && result == 0; i++) { + for (i = 0; i < loop->qlen && result == 0; i++) { req = lb_alloc_ep_req(ep, 0); if (!req) goto fail1; @@ -388,10 +390,10 @@ static struct usb_function *loopback_alloc(struct usb_function_instance *fi) lb_opts->refcnt++; mutex_unlock(&lb_opts->lock); - buflen = lb_opts->bulk_buflen; - qlen = lb_opts->qlen; - if (!qlen) - qlen = 32; + loop->buflen = lb_opts->bulk_buflen; + loop->qlen = lb_opts->qlen; + if (!loop->qlen) + loop->qlen = 32; loop->function.name = "loopback"; loop->function.bind = loopback_bind; |