[NET_DMA]: remove unused dma_memcpy_to_kernel_iovec

Al Viro pointed out that dma_memcpy_to_kernel_iovec() really was
unreachable and thus unused.  The code originally was there to support
in-kernel dma needs, but since it remains unused, we'll pull it out.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/dma/iovlock.c b/drivers/dma/iovlock.c
index d637555..e763d72 100644 (file)
--- a/drivers/dma/iovlock.c
+++ b/drivers/dma/iovlock.c
@@ -143,29 +143,6 @@ void dma_unpin_iovec_pages(struct dma_pinned_list *pinned_list)
        kfree(pinned_list);
 }
 
-static dma_cookie_t dma_memcpy_to_kernel_iovec(struct dma_chan *chan, struct
-       iovec *iov, unsigned char *kdata, size_t len)
-{
-       dma_cookie_t dma_cookie = 0;
-
-       while (len > 0) {
-               if (iov->iov_len) {
-                       int copy = min_t(unsigned int, iov->iov_len, len);
-                       dma_cookie = dma_async_memcpy_buf_to_buf(
-                                       chan,
-                                       iov->iov_base,
-                                       kdata,
-                                       copy);
-                       kdata += copy;
-                       len -= copy;
-                       iov->iov_len -= copy;
-                       iov->iov_base += copy;
-               }
-               iov++;
-       }
-
-       return dma_cookie;
-}
 
 /*
  * We have already pinned down the pages we will be using in the iovecs.
@@ -187,10 +164,6 @@ dma_cookie_t dma_memcpy_to_iovec(struct dma_chan *chan, struct iovec *iov,
        if (!chan)
                return memcpy_toiovec(iov, kdata, len);
 
-       /* -> kernel copies (e.g. smbfs) */
-       if (!pinned_list)
-               return dma_memcpy_to_kernel_iovec(chan, iov, kdata, len);
-
        iovec_idx = 0;
        while (iovec_idx < pinned_list->nr_iovecs) {
                struct dma_page_list *page_list;