| From | Greg Kroah-Hartman <> | Subject | [ 082/123] sparc64: Set CRYPTO_TFM_REQ_MAY_SLEEP consistently in DES code. | Date | Wed, 9 Jan 2013 12:35:21 -0800 |
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3.7-stable review patch. If anyone has any objections, please let me know.
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From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit b3a37947074fa0a488d6c7ede58125b2278ab4e8 ]
We use the FPU and therefore cannot sleep during the crypto loops.
Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/sparc/crypto/des_glue.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/arch/sparc/crypto/des_glue.c +++ b/arch/sparc/crypto/des_glue.c @@ -100,6 +100,7 @@ static int __ecb_crypt(struct blkcipher_ blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; if (encrypt) des_sparc64_load_keys(&ctx->encrypt_expkey[0]); @@ -147,6 +148,7 @@ static int cbc_encrypt(struct blkcipher_ blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; des_sparc64_load_keys(&ctx->encrypt_expkey[0]); while ((nbytes = walk.nbytes)) { @@ -177,6 +179,7 @@ static int cbc_decrypt(struct blkcipher_ blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; des_sparc64_load_keys(&ctx->decrypt_expkey[0]); while ((nbytes = walk.nbytes)) { @@ -266,6 +269,7 @@ static int __ecb3_crypt(struct blkcipher blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; if (encrypt) K = &ctx->encrypt_expkey[0]; @@ -317,6 +321,7 @@ static int cbc3_encrypt(struct blkcipher blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; K = &ctx->encrypt_expkey[0]; des3_ede_sparc64_load_keys(K); @@ -352,6 +357,7 @@ static int cbc3_decrypt(struct blkcipher blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; K = &ctx->decrypt_expkey[0]; des3_ede_sparc64_load_keys(K);
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