[PATCH v3 04/13] crypto: sun4i-ss: cannot use DMA is the request is 0 length
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STALE3412d
REVIEWED: 2 (2M)
From: Antoine Tenart <hidden>
Date: 2017-06-01 19:39:39
Also in:
linux-crypto
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
Revision v3 of 3 in this series; 2 review trailers.
Revisions (3)
- v1 [diff vs current]
- v2 [diff vs current]
- v3 current
Do not use DMA is the request is 0 length. Signed-off-by: Antoine Tenart <redacted> Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com> --- 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