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path: root/drivers/usb/gadget
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Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/ci_udc.c17
-rw-r--r--drivers/usb/gadget/ci_udc.h1
2 files changed, 17 insertions, 1 deletions
diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index 77f8c9e..03ad231 100644
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -198,8 +198,14 @@ static void ci_invalidate_qtd(int ep_num)
static struct usb_request *
ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
{
+ struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
+ int num;
struct ci_req *ci_req;
+ num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if (num == 0 && controller.ep0_req)
+ return &controller.ep0_req->req;
+
ci_req = memalign(ARCH_DMA_MINALIGN, sizeof(*ci_req));
if (!ci_req)
return NULL;
@@ -207,6 +213,9 @@ ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
INIT_LIST_HEAD(&ci_req->queue);
ci_req->b_buf = 0;
+ if (num == 0)
+ controller.ep0_req = ci_req;
+
return &ci_req->req;
}
@@ -471,7 +480,7 @@ static void handle_setup(void)
int num, in, _num, _in, i;
char *buf;
- ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
+ ci_req = controller.ep0_req;
req = &ci_req->req;
head = ci_get_qh(0, 0); /* EP0 OUT */
@@ -780,6 +789,12 @@ static int ci_udc_probe(void)
&controller.gadget.ep_list);
}
+ ci_ep_alloc_request(&controller.ep[0].ep, 0);
+ if (!controller.ep0_req) {
+ free(controller.epts);
+ return -ENOMEM;
+ }
+
return 0;
}
diff --git a/drivers/usb/gadget/ci_udc.h b/drivers/usb/gadget/ci_udc.h
index 23cff56..7d76af8 100644
--- a/drivers/usb/gadget/ci_udc.h
+++ b/drivers/usb/gadget/ci_udc.h
@@ -97,6 +97,7 @@ struct ci_ep {
struct ci_drv {
struct usb_gadget gadget;
+ struct ci_req *ep0_req;
struct usb_gadget_driver *driver;
struct ehci_ctrl *ctrl;
struct ept_queue_head *epts;