staging: ks7010: replace MichaelBlockFunction macro with inline function

This commit replaces MichaelBlockFunction macro with similar
inline function renaming it to michael_block.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/ks7010/michael_mic.c b/drivers/staging/ks7010/michael_mic.c
index 490438d..5eac356 100644 (file)
--- a/drivers/staging/ks7010/michael_mic.c
+++ b/drivers/staging/ks7010/michael_mic.c
@@ -34,17 +34,18 @@ static void michael_init(struct michael_mic_t *mic, uint8_t *key)
        michael_clear(mic);
 }
 
-#define MichaelBlockFunction(L, R)                             \
-do {                                                           \
-       R ^= rol32(L, 17);                                      \
-       L += R;                                                 \
-       R ^= ((L & 0xff00ff00) >> 8) | ((L & 0x00ff00ff) << 8); \
-       L += R;                                                 \
-       R ^= rol32(L, 3);                                       \
-       L += R;                                                 \
-       R ^= ror32(L, 2);                                       \
-       L += R;                                                 \
-} while (0)
+static inline void michael_block(struct michael_mic_t *mic)
+{
+       mic->r ^= rol32(mic->l, 17);
+       mic->l += mic->r;
+       mic->r ^= ((mic->l & 0xff00ff00) >> 8) |
+                 ((mic->l & 0x00ff00ff) << 8);
+       mic->l += mic->r;
+       mic->r ^= rol32(mic->l, 3);                                     \
+       mic->l += mic->r;
+       mic->r ^= ror32(mic->l, 2);                                     \
+       mic->l += mic->r;
+}
 
 static void michael_append(struct michael_mic_t *mic, uint8_t *src, int bytes)
 {
@@ -63,13 +64,13 @@ static void michael_append(struct michael_mic_t *mic, uint8_t *src, int bytes)
                        return;
 
                mic->l ^= get_unaligned_le32(mic->m);
-               MichaelBlockFunction(mic->l, mic->r);
+               michael_block(mic);
                mic->m_bytes = 0;
        }
 
        while (bytes >= 4) {
                mic->l ^= get_unaligned_le32(src);
-               MichaelBlockFunction(mic->l, mic->r);
+               michael_block(mic);
                src += 4;
                bytes -= 4;
        }
@@ -99,8 +100,8 @@ static void michael_get_mic(struct michael_mic_t *mic, uint8_t *dst)
                    0x5a000000;
                break;
        }
-       MichaelBlockFunction(mic->l, mic->r);
-       MichaelBlockFunction(mic->l, mic->r);
+       michael_block(mic);
+       michael_block(mic);
        // The appendByte function has already computed the result.
        put_unaligned_le32(mic->l, dst);
        put_unaligned_le32(mic->r, dst + 4);