From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752690AbdLBT3A (ORCPT <rfc822;w@1wt.eu>);
        Sat, 2 Dec 2017 14:29:00 -0500
Received: from mail-pl0-f65.google.com ([209.85.160.65]:40963 "EHLO
        mail-pl0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752344AbdLBT0n (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Sat, 2 Dec 2017 14:26:43 -0500
X-Google-Smtp-Source: AGs4zMYYARtNNgX0Z2I15sFO4RJ/b0HUaymnGn8tKmYEjbjswk687JsjZ/SnoDmrxwLgRPx519lTmg==
From: Arvind Yadav <arvind.yadav.cs@gmail.com>
To: wg@grandegger.com, mkl@pengutronix.de, michal.simek@xilinx.com,
        opendmb@gmail.com, f.fainelli@gmail.com, davem@davemloft.net,
        Vladislav.Zakharov@synopsys.com
Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        netdev@vger.kernel.org
Subject: [PATCH 03/10] net: ezchip: nps_enet: Fix platform_get_irq's error checking
Date: Sun,  3 Dec 2017 00:56:15 +0530
Message-Id: <1512242782-7134-4-git-send-email-arvind.yadav.cs@gmail.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1512242782-7134-1-git-send-email-arvind.yadav.cs@gmail.com>
References: <1512242782-7134-1-git-send-email-arvind.yadav.cs@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct. And remove unnecessary check for free_netdev().

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/net/ethernet/ezchip/nps_enet.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ezchip/nps_enet.c b/drivers/net/ethernet/ezchip/nps_enet.c
index 659f1ad..82dc6d0 100644
--- a/drivers/net/ethernet/ezchip/nps_enet.c
+++ b/drivers/net/ethernet/ezchip/nps_enet.c
@@ -623,9 +623,9 @@ static s32 nps_enet_probe(struct platform_device *pdev)
 
 	/* Get IRQ number */
 	priv->irq = platform_get_irq(pdev, 0);
-	if (!priv->irq) {
+	if (priv->irq <= 0) {
 		dev_err(dev, "failed to retrieve <irq Rx-Tx> value from device tree\n");
-		err = -ENODEV;
+		err = priv->irq ? priv->irq : -ENODEV;
 		goto out_netdev;
 	}
 
@@ -646,8 +646,7 @@ static s32 nps_enet_probe(struct platform_device *pdev)
 out_netif_api:
 	netif_napi_del(&priv->napi);
 out_netdev:
-	if (err)
-		free_netdev(ndev);
+	free_netdev(ndev);
 
 	return err;
 }
-- 
2.7.4