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-rw-r--r--drivers/crypto/padlock-sha.c14
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;