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async_tx: add missing DMA unmap to async_memcpy() 

Do DMA unmap on ->device_prep_dma_memcpy failure.

Cc: Dan Williams <djbw@fb.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dan Williams <djbw@fb.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2012-11-05 10:00:12 +00:00 committed by Vinod Koul
parent 2c88ae9093
commit 35fa4dbc8c
1 changed files with 6 additions and 0 deletions
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6
crypto/async_tx/async_memcpy.c
View File

@ -67,6 +67,12 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
tx = device->device_prep_dma_memcpy(chan, dma_dest, dma_src,
len, dma_prep_flags);
if (!tx) {
dma_unmap_page(device->dev, dma_dest, len,
DMA_FROM_DEVICE);
dma_unmap_page(device->dev, dma_src, len,
DMA_TO_DEVICE);
}
}
if (tx) {