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crypto: rmd256 - use swap macro in rmd256_transform

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Make use of the swap macro and remove unnecessary variable *tmp*.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gustavo A. R. Silva 2018-07-18 12:12:00 -05:00 committed by Herbert Xu
parent 6b0daa7820
commit d75f482eaf
1 changed files with 5 additions and 5 deletions
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10
crypto/rmd256.c
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@ -49,7 +49,7 @@ struct rmd256_ctx {
static void rmd256_transform(u32 *state, const __le32 *in) static void rmd256_transform(u32 *state, const __le32 *in)
{ {
u32 aa, bb, cc, dd, aaa, bbb, ccc, ddd, tmp; u32 aa, bb, cc, dd, aaa, bbb, ccc, ddd;
/* Initialize left lane */ /* Initialize left lane */
aa = state[0]; aa = state[0];
@ -100,7 +100,7 @@ static void rmd256_transform(u32 *state, const __le32 *in)
ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[12], 6); ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[12], 6);
/* Swap contents of "a" registers */ /* Swap contents of "a" registers */
tmp = aa; aa = aaa; aaa = tmp; swap(aa, aaa);
/* round 2: left lane */ /* round 2: left lane */
ROUND(aa, bb, cc, dd, F2, K2, in[7], 7); ROUND(aa, bb, cc, dd, F2, K2, in[7], 7);
@ -139,7 +139,7 @@ static void rmd256_transform(u32 *state, const __le32 *in)
ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[2], 11); ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[2], 11);
/* Swap contents of "b" registers */ /* Swap contents of "b" registers */
tmp = bb; bb = bbb; bbb = tmp; swap(bb, bbb);
/* round 3: left lane */ /* round 3: left lane */
ROUND(aa, bb, cc, dd, F3, K3, in[3], 11); ROUND(aa, bb, cc, dd, F3, K3, in[3], 11);
@ -178,7 +178,7 @@ static void rmd256_transform(u32 *state, const __le32 *in)
ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[13], 5); ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[13], 5);
/* Swap contents of "c" registers */ /* Swap contents of "c" registers */
tmp = cc; cc = ccc; ccc = tmp; swap(cc, ccc);
/* round 4: left lane */ /* round 4: left lane */
ROUND(aa, bb, cc, dd, F4, K4, in[1], 11); ROUND(aa, bb, cc, dd, F4, K4, in[1], 11);
@ -217,7 +217,7 @@ static void rmd256_transform(u32 *state, const __le32 *in)
ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[14], 8); ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[14], 8);
/* Swap contents of "d" registers */ /* Swap contents of "d" registers */
tmp = dd; dd = ddd; ddd = tmp; swap(dd, ddd);
/* combine results */ /* combine results */
state[0] += aa; state[0] += aa;