1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 83862e7f7aec..8d76bb2e0312 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -122,6 +122,38 @@ int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
 
+int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev,
+                                        const u8 request, const u8 requesttype,
+                                        const u16 offset, const void *buffer,
+                                        const u16 buffer_length,
+                                        const int timeout)
+{
+        int status = 0;
+        unsigned char *tb;
+        u16 off, len, bsize;
+
+        mutex_lock(&rt2x00dev->usb_cache_mutex);
+
+        tb  = (char *)buffer;
+        off = offset;
+        len = buffer_length;
+        while (len && !status) {
+                bsize = min_t(u16, CSR_CACHE_SIZE, len);
+                status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request,
+                                                        requesttype, off, tb,
+                                                        bsize, timeout);
+
+                tb  += bsize;
+                len -= bsize;
+                off += bsize;
+        }
+
+        mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        return status;
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_large_buff);
+
 /*
  * TX data handlers.
  */