usb: musb: gadget: do not poke with gadget's list_head
struct usb_request's list_head is supposed to be
used only by gadget drivers, but musb is abusing
that. Give struct musb_request its own list_head
and prevent musb from poking into other driver's
business.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
index a55354f..66b7c5e 100644
--- a/drivers/usb/musb/musb_gadget.h
+++ b/drivers/usb/musb/musb_gadget.h
@@ -35,6 +35,8 @@
#ifndef __MUSB_GADGET_H
#define __MUSB_GADGET_H
+#include <linux/list.h>
+
enum buffer_map_state {
UN_MAPPED = 0,
PRE_MAPPED,
@@ -43,6 +45,7 @@
struct musb_request {
struct usb_request request;
+ struct list_head list;
struct musb_ep *ep;
struct musb *musb;
u8 tx; /* endpoint direction */
@@ -94,13 +97,13 @@
return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
}
-static inline struct usb_request *next_request(struct musb_ep *ep)
+static inline struct musb_request *next_request(struct musb_ep *ep)
{
struct list_head *queue = &ep->req_list;
if (list_empty(queue))
return NULL;
- return container_of(queue->next, struct usb_request, list);
+ return container_of(queue->next, struct musb_request, list);
}
extern void musb_g_tx(struct musb *musb, u8 epnum);