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async_xor_val: convert to dmaengine_unmap_data 

Use the generic unmap object to unmap dma buffers.

Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[bzolnier: minor cleanups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2013-10-18 19:35:27 +02:00
parent fb36ab142b
commit 173e86b280
1 changed files with 17 additions and 13 deletions
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30
crypto/async_tx/async_xor.c
View File

@ -275,18 +275,17 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
struct dma_chan *chan = xor_val_chan(submit, dest, src_list, src_cnt, len);
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;
dma_addr_t *dma_src = NULL;
struct dmaengine_unmap_data *unmap = NULL;
BUG_ON(src_cnt <= 1);
if (submit->scribble)
dma_src = submit->scribble;
else if (sizeof(dma_addr_t) <= sizeof(struct page *))
dma_src = (dma_addr_t *) src_list;
if (device)
unmap = dmaengine_get_unmap_data(device->dev, src_cnt, GFP_NOIO);
if (dma_src && device && src_cnt <= device->max_xor &&
if (unmap && src_cnt <= device->max_xor &&
is_dma_xor_aligned(device, offset, 0, len)) {
unsigned long dma_prep_flags = 0;
unsigned long dma_prep_flags = DMA_COMPL_SKIP_SRC_UNMAP |
DMA_COMPL_SKIP_DEST_UNMAP;
int i;
pr_debug("%s: (async) len: %zu\n", __func__, len);
@ -295,11 +294,15 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
dma_prep_flags |= DMA_PREP_INTERRUPT;
if (submit->flags & ASYNC_TX_FENCE)
dma_prep_flags |= DMA_PREP_FENCE;
for (i = 0; i < src_cnt; i++)
dma_src[i] = dma_map_page(device->dev, src_list[i],
offset, len, DMA_TO_DEVICE);
tx = device->device_prep_dma_xor_val(chan, dma_src, src_cnt,
for (i = 0; i < src_cnt; i++) {
unmap->addr[i] = dma_map_page(device->dev, src_list[i],
offset, len, DMA_TO_DEVICE);
unmap->to_cnt++;
}
unmap->len = len;
tx = device->device_prep_dma_xor_val(chan, unmap->addr, src_cnt,
len, result,
dma_prep_flags);
if (unlikely(!tx)) {
@ -308,11 +311,11 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
while (!tx) {
dma_async_issue_pending(chan);
tx = device->device_prep_dma_xor_val(chan,
dma_src, src_cnt, len, result,
unmap->addr, src_cnt, len, result,
dma_prep_flags);
}
}
dma_set_unmap(tx, unmap);
async_tx_submit(chan, tx, submit);
} else {
enum async_tx_flags flags_orig = submit->flags;
@ -334,6 +337,7 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
async_tx_sync_epilog(submit);
submit->flags = flags_orig;
}
dmaengine_unmap_put(unmap);
return tx;
}