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[NET_DMA]: remove unused dma_memcpy_to_kernel_iovec

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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>
This commit is contained in:
Shannon Nelson 2007-07-26 00:05:53 -07:00 committed by David S. Miller
parent 9457106575
commit 342ff7b24f
1 changed files with 0 additions and 27 deletions
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27
drivers/dma/iovlock.c
View file

@ -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;