netdev - [PATCH 2/2] at76c50x-usb: Improve size determinations in at76_usbdfu

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Date:   Sat, 30 Dec 2017 22:08:23 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Andrew Zaborowski <andrew.zaborowski@...el.com>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        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] at76c50x-usb: Improve size determinations in
 at76_usbdfu_download()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 30 Dec 2017 21:56:56 +0100

Replace the specification of two data types by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/wireless/atmel/at76c50x-usb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/atmel/at76c50x-usb.c b/drivers/net/wireless/atmel/at76c50x-usb.c
index 2893d339b440..6144d4a258ca 100644
--- a/drivers/net/wireless/atmel/at76c50x-usb.c
+++ b/drivers/net/wireless/atmel/at76c50x-usb.c
@@ -383,7 +383,7 @@ static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 		return -EINVAL;
 	}
 
-	dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
+	dfu_stat_buf = kmalloc(sizeof(*dfu_stat_buf), GFP_KERNEL);
 	if (!dfu_stat_buf) {
 		ret = -ENOMEM;
 		goto exit;
@@ -395,7 +395,7 @@ static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 		goto exit;
 	}
 
-	dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
+	dfu_state = kmalloc(sizeof(*dfu_state), GFP_KERNEL);
 	if (!dfu_state) {
 		ret = -ENOMEM;
 		goto exit;
-- 
2.15.1