linux-kernel - [PATCH V2 5/7] usb-misc: sisusbvga: Remove null test before calls to kfree()

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Message-Id: <1452879694-21206-6-git-send-email-peter.senna@collabora.com>
Date:	Fri, 15 Jan 2016 18:41:32 +0100
From:	Peter Senna Tschudin <peter.senna@...labora.com>
To:	thomas@...ischhofer.net, gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	joe@...ches.com, sergei.shtylyov@...entembedded.com
Cc:	Peter Senna Tschudin <peter.senna@...il.com>,
	Peter Senna Tschudin <peter.senna@...labora.com>
Subject: [PATCH V2 5/7] usb-misc: sisusbvga: Remove null test before calls to kfree()

From: Peter Senna Tschudin <peter.senna@...il.com>

This patch removes null test before calls to kfree() as kfree() can
handle null pointers safely.

Signed-off-by: Peter Senna Tschudin <peter.senna@...labora.com>
---
No changes from V1.

Tested by compilation only.

 drivers/usb/misc/sisusbvga/sisusb.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 40f360a..bea6d88 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -76,15 +76,11 @@ static void sisusb_free_buffers(struct sisusb_usb_data *sisusb)
 	int i;
 
 	for (i = 0; i < NUMOBUFS; i++) {
-		if (sisusb->obuf[i]) {
-			kfree(sisusb->obuf[i]);
-			sisusb->obuf[i] = NULL;
-		}
-	}
-	if (sisusb->ibuf) {
-		kfree(sisusb->ibuf);
-		sisusb->ibuf = NULL;
+		kfree(sisusb->obuf[i]);
+		sisusb->obuf[i] = NULL;
 	}
+	kfree(sisusb->ibuf);
+	sisusb->ibuf = NULL;
 }
 
 static void sisusb_free_urbs(struct sisusb_usb_data *sisusb)
-- 
2.5.0