diff options
| author | Sergio Paracuellos <sergio.paracuellos@gmail.com> | 2018-03-11 12:11:44 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-14 12:57:06 +0100 |
| commit | 8b6f053790d94cceb323c2754fcd69c1286778b8 (patch) | |
| tree | 03ec04eb90879603a8c20d9a455a4789f955ce04 /drivers/staging/ks7010/michael_mic.c | |
| parent | ae91ce5db517626168a970806e650122a9b6d9f7 (diff) | |
staging: ks7010: replace custom rotation operations in favour of the kernel ones
This patch replaces custom ROR32 and ROL32 macros for the ones included in
bitops header of the linux kernel.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ks7010/michael_mic.c')
| -rw-r--r-- | drivers/staging/ks7010/michael_mic.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/staging/ks7010/michael_mic.c b/drivers/staging/ks7010/michael_mic.c index 80497ef5b1aa..1df4366fdb71 100644 --- a/drivers/staging/ks7010/michael_mic.c +++ b/drivers/staging/ks7010/michael_mic.c @@ -11,11 +11,9 @@ #include <linux/types.h> #include <linux/string.h> +#include <linux/bitops.h> #include "michael_mic.h" -// Rotation functions on 32 bit values -#define ROL32(A, n) (((A) << (n)) | (((A) >> (32 - (n))) & ((1UL << (n)) - 1))) -#define ROR32(A, n) ROL32((A), 32 - (n)) // Convert from Byte[] to UInt32 in a portable way #define getUInt32(A, B) ((uint32_t)(A[B + 0] << 0) \ + (A[B + 1] << 8) + (A[B + 2] << 16) + (A[B + 3] << 24)) @@ -50,13 +48,13 @@ void MichaelInitializeFunction(struct michael_mic_t *Mic, uint8_t *key) #define MichaelBlockFunction(L, R) \ do { \ - R ^= ROL32(L, 17); \ + R ^= rol32(L, 17); \ L += R; \ R ^= ((L & 0xff00ff00) >> 8) | ((L & 0x00ff00ff) << 8); \ L += R; \ - R ^= ROL32(L, 3); \ + R ^= rol32(L, 3); \ L += R; \ - R ^= ROR32(L, 2); \ + R ^= ror32(L, 2); \ L += R; \ } while (0) |