---

yaml
---
r: 352825
b: refs/heads/master
c: bc6b892
h: refs/heads/master
i:
  352823: bcded86
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a5f390562a375a315292648e2da865a12b42f280
+refs/heads/master: bc6b89237acb3dee6af6e64e51a18255fef89cc2

trunk/drivers/net/wireless/rtlwifi/usb.c

@@ -42,8 +42,12 @@
 
 static void usbctrl_async_callback(struct urb *urb)
 {
-	if (urb)
-		kfree(urb->context);
+	if (urb) {
+		/* free dr */
+		kfree(urb->setup_packet);
+		/* free databuf */
+		kfree(urb->transfer_buffer);
+	}
 }
 
 static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
@@ -55,39 +59,47 @@ static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
 	u8 reqtype;
 	struct usb_ctrlrequest *dr;
 	struct urb *urb;
-	struct rtl819x_async_write_data {
-		u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
-		struct usb_ctrlrequest dr;
-	} *buf;
+	const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
+	u8 *databuf;
+
+	if (WARN_ON_ONCE(len > databuf_maxlen))
+		len = databuf_maxlen;
 
 	pipe = usb_sndctrlpipe(udev, 0); /* write_out */
 	reqtype =  REALTEK_USB_VENQT_WRITE;
 
-	buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
-	if (!buf)
+	dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
+	if (!dr)
 		return -ENOMEM;
 
+	databuf = kmalloc(databuf_maxlen, GFP_ATOMIC);
+	if (!databuf) {
+		kfree(dr);
+		return -ENOMEM;
+	}
+
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
 	if (!urb) {
-		kfree(buf);
+		kfree(databuf);
+		kfree(dr);
 		return -ENOMEM;
 	}
 
-	dr = &buf->dr;
-
 	dr->bRequestType = reqtype;
 	dr->bRequest = request;
 	dr->wValue = cpu_to_le16(value);
 	dr->wIndex = cpu_to_le16(index);
 	dr->wLength = cpu_to_le16(len);
 	/* data are already in little-endian order */
-	memcpy(buf, pdata, len);
+	memcpy(databuf, pdata, len);
 	usb_fill_control_urb(urb, udev, pipe,
-			     (unsigned char *)dr, buf, len,
-			     usbctrl_async_callback, buf);
+			     (unsigned char *)dr, databuf, len,
+			     usbctrl_async_callback, NULL);
 	rc = usb_submit_urb(urb, GFP_ATOMIC);
-	if (rc < 0)
-		kfree(buf);
+	if (rc < 0) {
+		kfree(databuf);
+		kfree(dr);
+	}
 	usb_free_urb(urb);
 	return rc;
 }