linux-kernel - [PATCH] Input-mpr121: Use common error handling code in mpr_touchkey

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Date:   Thu, 26 Oct 2017 21:23:56 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-input@...r.kernel.org, Akinobu Mita <akinobu.mita@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Günter Röck <linux@...ck-us.net>,
        Zhang Jiejing <jiejing.zhang@...escale.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] Input-mpr121: Use common error handling code in
 mpr_touchkey_interrupt()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 26 Oct 2017 21:16:53 +0200

Add a jump target so that an error message can be better reused
in an if branch of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/input/keyboard/mpr121_touchkey.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/input/keyboard/mpr121_touchkey.c b/drivers/input/keyboard/mpr121_touchkey.c
index 884a74d8a7ed..af840a842246 100644
--- a/drivers/input/keyboard/mpr121_touchkey.c
+++ b/drivers/input/keyboard/mpr121_touchkey.c
@@ -129,14 +129,13 @@ static irqreturn_t mpr_touchkey_interrupt(int irq, void *dev_id)
 	int reg;
 
 	reg = i2c_smbus_read_byte_data(client, ELE_TOUCH_STATUS_1_ADDR);
-	if (reg < 0) {
-		dev_err(&client->dev, "i2c read error [%d]\n", reg);
-		goto out;
-	}
+	if (reg < 0)
+		goto report_read_failure;
 
 	reg <<= 8;
 	reg |= i2c_smbus_read_byte_data(client, ELE_TOUCH_STATUS_0_ADDR);
 	if (reg < 0) {
+report_read_failure:
 		dev_err(&client->dev, "i2c read error [%d]\n", reg);
 		goto out;
 	}
-- 
2.14.3