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Subject[patch 075/108] crypto: aes-ni - Fix cbc mode IV saving
2.6.30-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Huang Ying <ying.huang@intel.com>

commit e6efaa025384f86a18814a6b9f4e5d54484ab9ff upstream.

Original implementation of aesni_cbc_dec do not save IV if input
length % 4 == 0. This will make decryption of next block failed.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
arch/x86/crypto/aesni-intel_asm.S | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -845,7 +845,7 @@ ENTRY(aesni_cbc_enc)
*/
ENTRY(aesni_cbc_dec)
cmp $16, LEN
- jb .Lcbc_dec_ret
+ jb .Lcbc_dec_just_ret
mov 480(KEYP), KLEN
add $240, KEYP
movups (IVP), IV
@@ -891,6 +891,7 @@ ENTRY(aesni_cbc_dec)
add $16, OUTP
cmp $16, LEN
jge .Lcbc_dec_loop1
- movups IV, (IVP)
.Lcbc_dec_ret:
+ movups IV, (IVP)
+.Lcbc_dec_just_ret:
ret



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