kernel_fpu_begin/end used preempt_disable/enable, so sleep should be
prevented between kernel_fpu_begin/end.

Signed-off-by: Huang Ying <ying.hu...@intel.com>

---
 arch/x86/crypto/fpu.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/crypto/fpu.c
+++ b/arch/x86/crypto/fpu.c
@@ -48,7 +48,7 @@ static int crypto_fpu_encrypt(struct blk
        struct blkcipher_desc desc = {
                .tfm = child,
                .info = desc_in->info,
-               .flags = desc_in->flags,
+               .flags = desc_in->flags & ~CRYPTO_TFM_REQ_MAY_SLEEP,
        };
 
        kernel_fpu_begin();
@@ -67,7 +67,7 @@ static int crypto_fpu_decrypt(struct blk
        struct blkcipher_desc desc = {
                .tfm = child,
                .info = desc_in->info,
-               .flags = desc_in->flags,
+               .flags = desc_in->flags & ~CRYPTO_TFM_REQ_MAY_SLEEP,
        };
 
        kernel_fpu_begin();


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