1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c
index 76cb6b345e7b..0af80577dc7b 100644
--- a/drivers/crypto/padlock-sha.c
+++ b/drivers/crypto/padlock-sha.c
@@ -24,6 +24,12 @@
 #include <asm/i387.h>
 #include "padlock.h"
 
+#ifdef CONFIG_64BIT
+#define STACK_ALIGN 16
+#else
+#define STACK_ALIGN 4
+#endif
+
 struct padlock_sha_desc {
         struct shash_desc fallback;
 };
@@ -64,7 +70,9 @@ static int padlock_sha1_finup(struct shash_desc *desc, const u8 *in,
         /* We can't store directly to *out as it may be unaligned. */
         /* BTW Don't reduce the buffer size below 128 Bytes!
          *     PadLock microcode needs it that big. */
-        char result[128] __attribute__ ((aligned(PADLOCK_ALIGNMENT)));
+        char buf[128 + PADLOCK_ALIGNMENT - STACK_ALIGN] __attribute__
+                ((aligned(STACK_ALIGN)));
+        char *result = PTR_ALIGN(&buf[0], PADLOCK_ALIGNMENT);
         struct padlock_sha_desc *dctx = shash_desc_ctx(desc);
         struct sha1_state state;
         unsigned int space;
@@ -128,7 +136,9 @@ static int padlock_sha256_finup(struct shash_desc *desc, const u8 *in,
         /* We can't store directly to *out as it may be unaligned. */
         /* BTW Don't reduce the buffer size below 128 Bytes!
          *     PadLock microcode needs it that big. */
-        char result[128] __attribute__ ((aligned(PADLOCK_ALIGNMENT)));
+        char buf[128 + PADLOCK_ALIGNMENT - STACK_ALIGN] __attribute__
+                ((aligned(STACK_ALIGN)));
+        char *result = PTR_ALIGN(&buf[0], PADLOCK_ALIGNMENT);
         struct padlock_sha_desc *dctx = shash_desc_ctx(desc);
         struct sha256_state state;
         unsigned int space;