linux-kernel - [PATCH 2/2] wireless: libertas_tf: Improve a size determination in two functions

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Date:   Wed, 3 Jan 2018 21:13:19 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Kees Cook <keescook@...omium.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] wireless: libertas_tf: Improve a size determination in
 two functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 3 Jan 2018 21:02:17 +0100

Replace the specification of data structures by variable references
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/wireless/marvell/libertas_tf/if_usb.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/marvell/libertas_tf/if_usb.c b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
index 9eebc84cd15a..98e81a6f2338 100644
--- a/drivers/net/wireless/marvell/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
@@ -152,7 +152,7 @@ static int if_usb_probe(struct usb_interface *intf,
 	lbtf_deb_enter(LBTF_DEB_USB);
 	udev = interface_to_usbdev(intf);
 
-	cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
+	cardp = kzalloc(sizeof(*cardp), GFP_KERNEL);
 	if (!cardp)
 		goto error;
 
@@ -536,8 +536,7 @@ static void if_usb_receive_fwload(struct urb *urb)
 		return;
 	}
 
-	syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader),
-			       GFP_ATOMIC);
+	syncfwheader = kmemdup(skb->data, sizeof(*syncfwheader), GFP_ATOMIC);
 	if (!syncfwheader) {
 		lbtf_deb_usbd(&cardp->udev->dev,
 			"Failure to allocate syncfwheader\n");
-- 
2.15.1