From 1bafd82d9a40cf09c6c40f1c09cc35b7050b1a9f Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sat, 10 May 2025 18:43:33 +0800 Subject: [PATCH] crypto: marvell/cesa - Avoid empty transfer descriptor The user may set req->src even if req->nbytes == 0. If there is no data to hash from req->src, do not generate an empty TDMA descriptor. Fixes: db509a45339f ("crypto: marvell/cesa - add TDMA support") Signed-off-by: Herbert Xu --- drivers/crypto/marvell/cesa/hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/marvell/cesa/hash.c b/drivers/crypto/marvell/cesa/hash.c index f150861ceaf6..6815eddc9068 100644 --- a/drivers/crypto/marvell/cesa/hash.c +++ b/drivers/crypto/marvell/cesa/hash.c @@ -663,7 +663,7 @@ static int mv_cesa_ahash_dma_req_init(struct ahash_request *req) if (ret) goto err_free_tdma; - if (iter.src.sg) { + if (iter.base.len > iter.src.op_offset) { /* * Add all the new data, inserting an operation block and * launch command between each full SRAM block-worth of -- 2.25.1