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| author | Corentin Labbe <clabbe@baylibre.com> | 2022-05-02 20:19:20 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-05-13 17:24:19 +0800 |
| commit | db0c62bcd4809be50dc952bfade5adf4baf52023 (patch) | |
| tree | e46e41ec2204db98f34fb9a8df1805f9fd057a67 /drivers/crypto | |
| parent | 8eec4563f152981a441693fc97c5459843dc5e6e (diff) | |
| download | lwn-db0c62bcd4809be50dc952bfade5adf4baf52023.tar.gz lwn-db0c62bcd4809be50dc952bfade5adf4baf52023.zip | |
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@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 6 |
1 files 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: |