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Date: Thu, 17 Mar 2022 20:55:56 +0000 From: Corentin Labbe <clabbe@...libre.com> To: herbert@...dor.apana.org.au, jernej.skrabec@...il.com, samuel@...lland.org, wens@...e.org Cc: linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev, Corentin Labbe <clabbe@...libre.com> Subject: [PATCH 10/19] crypto: sun8i-ss: do not zeroize all pad Instead of memset all pad buffer, it is faster to only put 0 where needed. Signed-off-by: Corentin Labbe <clabbe@...libre.com> --- drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c index 9582ac450d08..53e5bfb99c93 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -319,7 +319,7 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) unsigned int len; u64 fill, min_fill, byte_count; void *pad, *result; - int j, i, todo; + int j, i, k, todo; __be64 *bebits; __le64 *lebits; dma_addr_t addr_res, addr_pad; @@ -334,7 +334,6 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) result = ss->flows[rctx->flow].result; pad = ss->flows[rctx->flow].pad; - memset(pad, 0, algt->alg.hash.halg.base.cra_blocksize * 2); bf = (__le32 *)pad; for (i = 0; i < MAX_SG; i++) { @@ -395,7 +394,10 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) if (fill < min_fill) fill += 64; + k = j; j += (fill - min_fill) / sizeof(u32); + for (; k < j; k++) + bf[k] = 0; switch (algt->ss_algo_id) { case SS_ID_HASH_MD5: -- 2.34.1
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