Merge "usb: gadget: f_hid: use free_ep_req()"

drivers/usb/gadget/function/f_hid.c

@@ -377,7 +377,7 @@ static int f_hidg_open(struct inode *inode, struct file *fd)
 static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep,
 						    unsigned length)
 {
-	return alloc_ep_req(ep, length, length);
+	return alloc_ep_req(ep, length);
 }
 
 static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req)
@@ -693,11 +693,8 @@ fail_free_descs:
 	usb_free_all_descriptors(f);
 fail:
 	ERROR(f->config->cdev, "hidg_bind FAILED\n");
-	if (hidg->req != NULL) {
-		kfree(hidg->req->buf);
-		if (hidg->in_ep != NULL)
-			usb_ep_free_request(hidg->in_ep, hidg->req);
-	}
+	if (hidg->req != NULL)
+		free_ep_req(hidg->in_ep, hidg->req);
 
 	return status;
 }
@@ -936,8 +933,7 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f)
 
 	/* disable/free request and end point */
 	usb_ep_disable(hidg->in_ep);
-	kfree(hidg->req->buf);
-	usb_ep_free_request(hidg->in_ep, hidg->req);
+	free_ep_req(hidg->in_ep, hidg->req);
 
 	usb_free_all_descriptors(f);
 }

drivers/usb/gadget/function/f_loopback.c

@@ -308,9 +308,7 @@ static void disable_loopback(struct f_loopback *loop)
 
 static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len)
 {
-	struct f_loopback	*loop = ep->driver_data;
-
-	return alloc_ep_req(ep, len, loop->buflen);
+	return alloc_ep_req(ep, len);
 }
 
 static int alloc_requests(struct usb_composite_dev *cdev,
@@ -333,7 +331,7 @@ static int alloc_requests(struct usb_composite_dev *cdev,
 		if (!in_req)
 			goto fail;
 
-		out_req = lb_alloc_ep_req(loop->out_ep, 0);
+		out_req = lb_alloc_ep_req(loop->out_ep, loop->buflen);
 		if (!out_req)
 			goto fail_in;
 

drivers/usb/gadget/function/f_midi.c

@@ -207,7 +207,7 @@ static struct usb_gadget_strings *midi_strings[] = {
 static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep,
 						    unsigned length)
 {
-	return alloc_ep_req(ep, length, length);
+	return alloc_ep_req(ep, length);
 }
 
 static const uint8_t f_midi_cin_length[] = {

drivers/usb/gadget/function/f_sourcesink.c

@@ -298,9 +298,7 @@ static struct usb_gadget_strings *sourcesink_strings[] = {
 
 static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len)
 {
-	struct f_sourcesink		*ss = ep->driver_data;
-
-	return alloc_ep_req(ep, len, ss->buflen);
+	return alloc_ep_req(ep, len);
 }
 
 static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep)
@@ -611,7 +609,7 @@ static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in,
 			req = ss_alloc_ep_req(ep, size);
 		} else {
 			ep = is_in ? ss->in_ep : ss->out_ep;
-			req = ss_alloc_ep_req(ep, 0);
+			req = ss_alloc_ep_req(ep, ss->buflen);
 		}
 
 		if (!req)

drivers/usb/gadget/u_f.c

@@ -14,15 +14,14 @@
 #include "u_f.h"
 #include <linux/usb/ch9.h>
 
-struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len)
+struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
 {
 	struct usb_request      *req;
 
 	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
 	if (req) {
-		req->length = len ?: default_len;
-		if (usb_endpoint_dir_out(ep->desc))
-			req->length = usb_ep_align(ep, req->length);
+		req->length = usb_endpoint_dir_out(ep->desc) ?
+			usb_ep_align(ep, len) : len;
 		req->buf = kmalloc(req->length, GFP_ATOMIC);
 		if (!req->buf) {
 			usb_ep_free_request(ep, req);

drivers/usb/gadget/u_f.h

@@ -53,14 +53,13 @@ struct usb_request;
  *
  * @ep: the endpoint to allocate a usb_request
  * @len: usb_requests's buffer suggested size
- * @default_len: used if @len is not provided, ie, is 0
  *
  * In case @ep direction is OUT, the @len will be aligned to ep's
  * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use
  * usb_requests's length (req->length) to refer to the allocated buffer size.
  * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req().
  */
-struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len);
+struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len);
 
 /* Frees a usb_request previously allocated by alloc_ep_req() */
 static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)