linux-kernel - [PATCH 1/1 linux-next] lib/bch.c: Use swap() in solve_linear_system() and gf_poly

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Message-Id: <1434128353-10683-1-git-send-email-fabf@skynet.be>
Date:	Fri, 12 Jun 2015 18:59:13 +0200
From:	Fabian Frederick <fabf@...net.be>
To:	linux-kernel@...r.kernel.org
Cc:	Julia Lawall <Julia.Lawall@...6.fr>,
	Fabian Frederick <fabf@...net.be>
Subject: [PATCH 1/1 linux-next] lib/bch.c: Use swap() in solve_linear_system() and gf_poly_gcd()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@...net.be>
---
 lib/bch.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/lib/bch.c b/lib/bch.c
index bc89dfe..7e3d325 100644
--- a/lib/bch.c
+++ b/lib/bch.c
@@ -446,11 +446,9 @@ static int solve_linear_system(struct bch_control *bch, unsigned int *rows,
 		/* find suitable row for elimination */
 		for (r = p; r < m; r++) {
 			if (rows[r] & mask) {
-				if (r != p) {
-					tmp = rows[r];
-					rows[r] = rows[p];
-					rows[p] = tmp;
-				}
+				if (r != p)
+					swap(rows[r], rows[p]);
+
 				rem = r+1;
 				break;
 			}
@@ -766,21 +764,14 @@ static void gf_poly_div(struct bch_control *bch, struct gf_poly *a,
 static struct gf_poly *gf_poly_gcd(struct bch_control *bch, struct gf_poly *a,
 				   struct gf_poly *b)
 {
-	struct gf_poly *tmp;
-
 	dbg("gcd(%s,%s)=", gf_poly_str(a), gf_poly_str(b));
 
-	if (a->deg < b->deg) {
-		tmp = b;
-		b = a;
-		a = tmp;
-	}
+	if (a->deg < b->deg)
+		swap(b, a);
 
 	while (b->deg > 0) {
 		gf_poly_mod(bch, a, b, NULL);
-		tmp = b;
-		b = a;
-		a = tmp;
+		swap(b, a);
 	}
 
 	dbg("%s\n", gf_poly_str(a));
-- 
2.4.2

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