linux-kernel - [PATCH 1/2] staging: wilc1000: Delete unnecessary checks before two function calls

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Message-ID: <558EB4DE.3080406@users.sourceforge.net>
Date:	Sat, 27 Jun 2015 16:36:14 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Chris Park <chris.park@...el.com>, Dean Lee <dean.lee@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Johnny Kim <johnny.kim@...el.com>,
	Rachel Kim <rachel.kim@...el.com>,
	linux-wireless@...r.kernel.org, devel@...verdev.osuosl.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/2] staging: wilc1000: Delete unnecessary checks before two
 function calls

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 27 Jun 2015 15:56:57 +0200

The functions kfree() and release_firmware() test whether their argument
is NULL and then return immediately.
Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/staging/wilc1000/linux_wlan.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c
index b352c50..2aa8d9b 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -2421,11 +2421,7 @@ int mac_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
 	}
 
 done:
-
-	if (buff != NULL) {
-		kfree(buff);
-	}
-
+	kfree(buff);
 	return s32Error;
 }
 
@@ -2707,8 +2703,7 @@ static void __exit exit_wilc_driver(void)
 		}
 	}
 
-
-	if ((g_linux_wlan != NULL) && g_linux_wlan->wilc_firmware != NULL) {
+	if (g_linux_wlan) {
 		release_firmware(g_linux_wlan->wilc_firmware);
 		g_linux_wlan->wilc_firmware = NULL;
 	}
-- 
2.4.4

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