sparc64: Fix IV handling bug in des_sparc64_cbc_decrypt

The IV wasn't being propagated properly past the first loop
iteration.

This bug lived only because the crypto layer tests for
cbc(des) do not have any cases that go more than one loop.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/crypto/des_asm.S b/arch/sparc/crypto/des_asm.S
index a7da935..30b6e90 100644 (file)
--- a/arch/sparc/crypto/des_asm.S
+++ b/arch/sparc/crypto/des_asm.S
@@ -168,6 +168,7 @@ ENTRY(des_sparc64_cbc_decrypt)
        DES_ROUND(28, 30, 32, 32)
        DES_IIP(32, 32)
        fxor    %f32, %f34, %f32
+       fsrc2   %f36, %f34
        std     %f32, [%o1 + 0x00]
        add     %o0, 0x08, %o0
        subcc   %o2, 0x08, %o2