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| author | Ben Hutchings <ben.hutchings@mind.be> | 2021-08-11 02:05:55 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-08-21 15:44:53 +0800 |
| commit | ffe3ee8bb68aa6c49832c6c101ab0bb1cb635624 (patch) | |
| tree | dafc9c944300d1b373f6c410806f2e690e55426f | |
| parent | 9491923e4a68d696f7d0817a02829ed238783716 (diff) | |
| download | linux-ffe3ee8bb68aa6c49832c6c101ab0bb1cb635624.tar.gz | |
crypto: omap - Avoid redundant copy when using truncated sg list
omap_crypto_cleanup() currently copies data from sg to orig if either
copy flag is set. However OMAP_CRYPTO_SG_COPIED means that sg refers
to the same pages as orig, truncated to len bytes. There is no need
to copy in this case.
Only copy data if the OMAP_CRYPTO_DATA_COPIED flag is set.
Fixes: 74ed87e7e7f7 ("crypto: omap - add base support library for common ...")
Signed-off-by: Ben Hutchings <ben.hutchings@mind.be>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/omap-crypto.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/omap-crypto.c b/drivers/crypto/omap-crypto.c index 31bdb1d76d11..a4cc6bf146ec 100644 --- a/drivers/crypto/omap-crypto.c +++ b/drivers/crypto/omap-crypto.c @@ -210,7 +210,7 @@ void omap_crypto_cleanup(struct scatterlist *sg, struct scatterlist *orig, buf = sg_virt(sg); pages = get_order(len); - if (orig && (flags & OMAP_CRYPTO_COPY_MASK)) + if (orig && (flags & OMAP_CRYPTO_DATA_COPIED)) omap_crypto_copy_data(sg, orig, offset, len); if (flags & OMAP_CRYPTO_DATA_COPIED) |