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Commit 342ff7b2 authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller
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[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: default avatarShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 94571065

drivers/dma/iovlock.c

+0 −27
Original line number Diff line number Diff line
@@ -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;