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| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:42:53 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:42:53 -0700 |
| commit | e7b436f1a4f24f5de8f0ccd4ec643c771d5e9f8a (patch) | |
| tree | aa9aad503c28e8aeb5c1bbf410cd117c76df9ebf /crypto/async_tx/async_memcpy.c | |
| parent | 4546ea8f2c1e2d643de2fb70d29aa276a1bc2051 (diff) | |
| download | linux-crypto-e7b436f1a4f24f5de8f0ccd4ec643c771d5e9f8a.tar.gz linux-crypto-e7b436f1a4f24f5de8f0ccd4ec643c771d5e9f8a.zip | |
dmaengine, async_tx: support alignment checks
Some engines have transfer size and address alignment restrictions. Add
a per-operation alignment property to struct dma_device that the async
routines and dmatest can use to check alignment capabilities.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/async_tx/async_memcpy.c')
| -rw-r--r-- | crypto/async_tx/async_memcpy.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c index b38cbb3f..0ec1fb69 100644 --- a/crypto/async_tx/async_memcpy.c +++ b/crypto/async_tx/async_memcpy.c @@ -50,7 +50,7 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset, struct dma_device *device = chan ? chan->device : NULL; struct dma_async_tx_descriptor *tx = NULL; - if (device) { + if (device && is_dma_copy_aligned(device, src_offset, dest_offset, len)) { dma_addr_t dma_dest, dma_src; unsigned long dma_prep_flags = 0; |