[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>

1 files changed, 0 insertions, 27 deletions

diff --git a/drivers/dma/iovlock.c b/drivers/dma/iovlock.c
index d637555a833b..e763d723e4cf 100644
--- 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;