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authorCorentin Labbe <clabbe@baylibre.com>2022-05-02 20:19:20 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2022-05-13 17:24:19 +0800
commitdb0c62bcd4809be50dc952bfade5adf4baf52023 (patch)
treee46e41ec2204db98f34fb9a8df1805f9fd057a67 /drivers/crypto
parent8eec4563f152981a441693fc97c5459843dc5e6e (diff)
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.c6
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: