lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

dmaengine, async_tx: support alignment checks

Browse Source 
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>
This commit is contained in:
Dan Williams
2009-09-08 17:42:53 -07:00
parent 9308add6ea
commit 83544ae9f3
6 changed files with 67 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
crypto/async_tx/async_memset.c
View File

@@ -47,7 +47,7 @@ async_memset(struct page *dest, int val, unsigned int offset, size_t len,
struct dma_device *device = chan ? chan->device : NULL;
struct dma_async_tx_descriptor *tx = NULL;
if (device) {
if (device && is_dma_fill_aligned(device, offset, 0, len)) {
dma_addr_t dma_dest;
unsigned long dma_prep_flags = 0;