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-rw-r--r--crypto/async_tx/async_pq.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c
index a25e290c39f..b88db6d1dc6 100644
--- a/crypto/async_tx/async_pq.c
+++ b/crypto/async_tx/async_pq.c
@@ -211,7 +211,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
if (dma_src && device &&
(src_cnt <= dma_maxpq(device, 0) ||
- dma_maxpq(device, DMA_PREP_CONTINUE) > 0)) {
+ dma_maxpq(device, DMA_PREP_CONTINUE) > 0) &&
+ is_dma_pq_aligned(device, offset, 0, len)) {
/* run the p+q asynchronously */
pr_debug("%s: (async) disks: %d len: %zu\n",
__func__, disks, len);
@@ -274,7 +275,8 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
else if (sizeof(dma_addr_t) <= sizeof(struct page *))
dma_src = (dma_addr_t *) blocks;
- if (dma_src && device && disks <= dma_maxpq(device, 0)) {
+ if (dma_src && device && disks <= dma_maxpq(device, 0) &&
+ is_dma_pq_aligned(device, offset, 0, len)) {
struct device *dev = device->dev;
dma_addr_t *pq = &dma_src[disks-2];
int i;