Do not use DMA is the request is 0 length. Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx> --- drivers/crypto/sunxi-ss/sun4i-ss-hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c index e53c3127b743..bc3cbde07219 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c @@ -250,7 +250,7 @@ static int sun4i_hash(struct ahash_request *areq) i = 0; in_sg = sg_next(in_sg); } - if (i == 1 && !op->len) + if (i == 1 && !op->len && areq->nbytes) dev_dbg(ss->dev, "We can DMA\n"); i = 0; -- 2.9.4
