From: Herbert Xu Date: Sat, 10 May 2025 10:43:33 +0000 (+0800) Subject: crypto: marvell/cesa - Avoid empty transfer descriptor X-Git-Tag: v6.16-rc1~206^2~36 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1bafd82d9a40cf09c6c40f1c09cc35b7050b1a9f;p=thirdparty%2Fkernel%2Flinux.git 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 --- diff --git a/drivers/crypto/marvell/cesa/hash.c b/drivers/crypto/marvell/cesa/hash.c index f150861ceaf69..6815eddc90681 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