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crypto: rmd320 - use swap macro in rmd320_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 12:19:08 -05:00 committed by Herbert Xu
parent d75f482eaf
commit a478908993
1 changed files with 6 additions and 6 deletions
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12
crypto/rmd320.c
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@ -53,7 +53,7 @@ struct rmd320_ctx {
static void rmd320_transform(u32 *state, const __le32 *in) static void rmd320_transform(u32 *state, const __le32 *in)
{ {
u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp; u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
/* Initialize left lane */ /* Initialize left lane */
aa = state[0]; aa = state[0];
@ -106,7 +106,7 @@ static void rmd320_transform(u32 *state, const __le32 *in)
ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6); ROUND(aaa, bbb, ccc, ddd, eee, F5, 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(ee, aa, bb, cc, dd, F2, K2, in[7], 7); ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
@ -145,7 +145,7 @@ static void rmd320_transform(u32 *state, const __le32 *in)
ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11); ROUND(eee, aaa, bbb, ccc, ddd, F4, 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(dd, ee, aa, bb, cc, F3, K3, in[3], 11); ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
@ -184,7 +184,7 @@ static void rmd320_transform(u32 *state, const __le32 *in)
ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5); ROUND(ddd, eee, aaa, bbb, ccc, F3, 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(cc, dd, ee, aa, bb, F4, K4, in[1], 11); ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
@ -223,7 +223,7 @@ static void rmd320_transform(u32 *state, const __le32 *in)
ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8); ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
/* Swap contents of "d" registers */ /* Swap contents of "d" registers */
tmp = dd; dd = ddd; ddd = tmp; swap(dd, ddd);
/* round 5: left lane" */ /* round 5: left lane" */
ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9); ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
@ -262,7 +262,7 @@ static void rmd320_transform(u32 *state, const __le32 *in)
ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11); ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
/* Swap contents of "e" registers */ /* Swap contents of "e" registers */
tmp = ee; ee = eee; eee = tmp; swap(ee, eee);
/* combine results */ /* combine results */
state[0] += aa; state[0] += aa;