diff mbox

[bugfix,2/2] crypto: arm64/sha2-ce - prevent asm code finalization in final() path

Message ID 1430920472-20416-2-git-send-email-ard.biesheuvel@linaro.org (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show

Commit Message

Ard Biesheuvel May 6, 2015, 1:54 p.m. UTC 
Ensure that the asm code finalization path is not triggered when
invoked via final(), since it already takes care of that itself.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 arch/arm64/crypto/sha2-ce-glue.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/arch/arm64/crypto/sha2-ce-glue.c b/arch/arm64/crypto/sha2-ce-glue.c
index 1340e44c048b..7cd587564a41 100644
--- a/arch/arm64/crypto/sha2-ce-glue.c
+++ b/arch/arm64/crypto/sha2-ce-glue.c
@@ -75,6 +75,9 @@  static int sha256_ce_finup(struct shash_desc *desc, const u8 *data,
 
 static int sha256_ce_final(struct shash_desc *desc, u8 *out)
 {
+	struct sha256_ce_state *sctx = shash_desc_ctx(desc);
+
+	sctx->finalize = 0;
 	kernel_neon_begin_partial(28);
 	sha256_base_do_finalize(desc, (sha256_block_fn *)sha2_ce_transform);
 	kernel_neon_end();