From f53e38afdc3a395722775c28ceb0e06c36a17ac3 Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Thu, 19 Nov 2015 13:38:18 +0100 Subject: crypto: picoxcell - set [src|dst]_nents and nents as signed int The unsigned int variables [src|dst]_nents and nents can be assigned signed value (-EINVAL) from sg_nents_for_len(). Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait for an signed int, so they must be set as int. Fixes: f051f95eb47b ("crypto: picoxcell - check return value of sg_nents_for_len") Reported-by: Dan Carpenter Signed-off-by: LABBE Corentin Signed-off-by: Herbert Xu diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c index a9c6367..15b5e39 100644 --- a/drivers/crypto/picoxcell_crypto.c +++ b/drivers/crypto/picoxcell_crypto.c @@ -289,10 +289,11 @@ static struct spacc_ddt *spacc_sg_to_ddt(struct spacc_engine *engine, enum dma_data_direction dir, dma_addr_t *ddt_phys) { - unsigned nents, mapped_ents; + unsigned mapped_ents; struct scatterlist *cur; struct spacc_ddt *ddt; int i; + int nents; nents = sg_nents_for_len(payload, nbytes); if (nents < 0) { @@ -326,7 +327,7 @@ static int spacc_aead_make_ddts(struct aead_request *areq) struct spacc_engine *engine = req->engine; struct spacc_ddt *src_ddt, *dst_ddt; unsigned total; - unsigned int src_nents, dst_nents; + int src_nents, dst_nents; struct scatterlist *cur; int i, dst_ents, src_ents; -- cgit v0.10.2