linux-kernel - [PATCH V2] staging: r8188eu: Use kzalloc() instead of kmalloc()+memset()

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Message-Id: <20210918035141.237455-1-deng.changcheng@zte.com.cn>
Date:   Sat, 18 Sep 2021 03:51:41 +0000
From:   cgel.zte@...il.com
To:     Larry.Finger@...inger.net, dan.carpenter@...cle.com
Cc:     phil@...lpotter.co.uk, gregkh@...uxfoundation.org,
        straube.linux@...il.com, fmdefrancesco@...il.com, martin@...ser.cx,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Changcheng Deng <deng.changcheng@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH V2] staging: r8188eu: Use kzalloc() instead of kmalloc()+memset()

From: Changcheng Deng <deng.changcheng@....com.cn>

This place can use kzalloc() directly instead of calling kmalloc() then
memset(). Replace them.
At the same time,error code that is "ret = -ENOMEM;" should be added
here.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@....com.cn>
---
 drivers/staging/r8188eu/os_dep/ioctl_linux.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
index ac218da94ce5..2fb34964f8c8 100644
--- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
@@ -463,11 +463,12 @@ static int wpa_set_encryption(struct net_device *dev, struct ieee_param *param,
 		if (wep_key_len > 0) {
 			wep_key_len = wep_key_len <= 5 ? 5 : 13;
 			wep_total_len = wep_key_len + FIELD_OFFSET(struct ndis_802_11_wep, KeyMaterial);
-			pwep = kmalloc(wep_total_len, GFP_KERNEL);
-			if (!pwep)
+			pwep = kzalloc(wep_total_len, GFP_KERNEL);
+			if (!pwep) {
+				ret = -ENOMEM;
 				goto exit;
+			}
 
-			memset(pwep, 0, wep_total_len);
 			pwep->KeyLength = wep_key_len;
 			pwep->Length = wep_total_len;
 			if (wep_key_len == 13) {
-- 
2.25.1