linux-kernel - [PATCH] staging: speakup: selection: replace _manual

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Message-ID: <20171110221303.GA29629@embeddedor.com>
Date:   Fri, 10 Nov 2017 16:13:03 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     William Hubbs <w.d.hubbs@...il.com>,
        Chris Brannon <chris@...-brannons.com>,
        Kirk Reiser <kirk@...sers.ca>,
        Samuel Thibault <samuel.thibault@...-lyon.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     speakup@...ux-speakup.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] staging: speakup: selection: replace _manual_ swap with swap
 macro

Make use of the swap macro instead of _manually_ swapping values
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 <garsilva@...eddedor.com>
---
 drivers/staging/speakup/selection.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/speakup/selection.c b/drivers/staging/speakup/selection.c
index 66061b5..0ed1fef 100644
--- a/drivers/staging/speakup/selection.c
+++ b/drivers/staging/speakup/selection.c
@@ -64,13 +64,8 @@ int speakup_set_selection(struct tty_struct *tty)
 	ps = spk_ys * vc->vc_size_row + (spk_xs << 1);
 	pe = spk_ye * vc->vc_size_row + (spk_xe << 1);
 
-	if (ps > pe) {
-		/* make sel_start <= sel_end */
-		int tmp = ps;
-
-		ps = pe;
-		pe = tmp;
-	}
+	if (ps > pe)	/* make sel_start <= sel_end */
+		swap(ps, pe);
 
 	if (spk_sel_cons != vc_cons[fg_console].d) {
 		speakup_clear_selection();
-- 
2.7.4