linux-kernel - [PATCH] drivers:hid: use swap() to make code cleaner

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Date:   Tue,  9 Nov 2021 08:26:10 +0000
From:   cgel.zte@...il.com
To:     jikos@...nel.org
Cc:     benjamin.tissoires@...hat.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, chiminghao <chi.minghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] drivers:hid: use swap() to make code cleaner

From: chiminghao <chi.minghao@....com.cn>

Fix the following coccicheck REVIEW:
Use swap() instead of reimplementing it.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: chiminghao <chi.minghao@....com.cn>
---
 drivers/hid/hid-tmff.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/hid/hid-tmff.c b/drivers/hid/hid-tmff.c
index 90acef304536..4040cd98dafe 100644
--- a/drivers/hid/hid-tmff.c
+++ b/drivers/hid/hid-tmff.c
@@ -78,7 +78,6 @@ static int tmff_play(struct input_dev *dev, void *data,
 	struct hid_field *ff_field = tmff->ff_field;
 	int x, y;
 	int left, right;	/* Rumbling */
-	int motor_swap;
 
 	switch (effect->type) {
 	case FF_CONSTANT:
@@ -104,11 +103,8 @@ static int tmff_play(struct input_dev *dev, void *data,
 					ff_field->logical_maximum);
 
 		/* 2-in-1 strong motor is left */
-		if (hid->product == THRUSTMASTER_DEVICE_ID_2_IN_1_DT) {
-			motor_swap = left;
-			left = right;
-			right = motor_swap;
-		}
+		if (hid->product == THRUSTMASTER_DEVICE_ID_2_IN_1_DT)
+			swap(left, right);
 
 		dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
 		ff_field->value[0] = left;
-- 
2.25.1