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authorEric Biggers <ebiggers@google.com>2019-12-30 21:19:38 -0600
committerHerbert Xu <herbert@gondor.apana.org.au>2020-01-09 11:30:53 +0800
commitaf5034e8e4a5838fc77e476c1a91822e449d5869 (patch)
treef561a8db9f88931072210330128fed231e3b8b0b /arch/arm/crypto
parentc4c4db0d59774f6ab726edd012711490437345c2 (diff)
crypto: remove propagation of CRYPTO_TFM_RES_* flags
The CRYPTO_TFM_RES_* flags were apparently meant as a way to make the ->setkey() functions provide more information about errors. But these flags weren't actually being used or tested, and in many cases they weren't being set correctly anyway. So they've now been removed. Also, if someone ever actually needs to start better distinguishing ->setkey() errors (which is somewhat unlikely, as this has been unneeded for a long time), we'd be much better off just defining different return values, like -EINVAL if the key is invalid for the algorithm vs. -EKEYREJECTED if the key was rejected by a policy like "no weak keys". That would be much simpler, less error-prone, and easier to test. So just remove CRYPTO_TFM_RES_MASK and all the unneeded logic that propagates these flags around. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm/crypto')
-rw-r--r--arch/arm/crypto/ghash-ce-glue.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/arm/crypto/ghash-ce-glue.c b/arch/arm/crypto/ghash-ce-glue.c
index 7e8b2f55685c..a00fd329255f 100644
--- a/arch/arm/crypto/ghash-ce-glue.c
+++ b/arch/arm/crypto/ghash-ce-glue.c
@@ -294,16 +294,11 @@ static int ghash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
{
struct ghash_async_ctx *ctx = crypto_ahash_ctx(tfm);
struct crypto_ahash *child = &ctx->cryptd_tfm->base;
- int err;
crypto_ahash_clear_flags(child, CRYPTO_TFM_REQ_MASK);
crypto_ahash_set_flags(child, crypto_ahash_get_flags(tfm)
& CRYPTO_TFM_REQ_MASK);
- err = crypto_ahash_setkey(child, key, keylen);
- crypto_ahash_set_flags(tfm, crypto_ahash_get_flags(child)
- & CRYPTO_TFM_RES_MASK);
-
- return err;
+ return crypto_ahash_setkey(child, key, keylen);
}
static int ghash_async_init_tfm(struct crypto_tfm *tfm)