[ 082/123] sparc64: Set CRYPTO_TFM_REQ_MAY_SLEEP consistently in DES code.

Greg Kroah-Hartman
2013-01-09T20:59:00Z

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);