linux-kernel - [PATCH 6/6] usb: raw-gadget: use kzalloc

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Message-Id: <20220312102705.71413-7-Julia.Lawall@inria.fr>
Date:   Sat, 12 Mar 2022 11:27:05 +0100
From:   Julia Lawall <Julia.Lawall@...ia.fr>
To:     Andrey Konovalov <andreyknvl@...il.com>
Cc:     kernel-janitors@...r.kernel.org, Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] usb: raw-gadget: use kzalloc

Use kzalloc instead of kmalloc + memset.

The semantic patch that makes this change is:
(https://coccinelle.gitlabpages.inria.fr/website/)

//<smpl>
@@
expression res, size, flag;
@@
- res = kmalloc(size, flag);
+ res = kzalloc(size, flag);
  ...
- memset(res, 0, size);
//</smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...ia.fr>

---
 drivers/usb/gadget/legacy/raw_gadget.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/legacy/raw_gadget.c b/drivers/usb/gadget/legacy/raw_gadget.c
index d86c3a36441e..135e75b891f6 100644
--- a/drivers/usb/gadget/legacy/raw_gadget.c
+++ b/drivers/usb/gadget/legacy/raw_gadget.c
@@ -1157,7 +1157,7 @@ static int raw_ioctl_eps_info(struct raw_dev *dev, unsigned long value)
 	struct usb_raw_eps_info *info;
 	struct raw_ep *ep;
 
-	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info) {
 		ret = -ENOMEM;
 		goto out;
@@ -1177,7 +1177,6 @@ static int raw_ioctl_eps_info(struct raw_dev *dev, unsigned long value)
 		goto out_free;
 	}
 
-	memset(info, 0, sizeof(*info));
 	for (i = 0; i < dev->eps_num; i++) {
 		ep = &dev->eps[i];
 		strscpy(&info->eps[i].name[0], ep->ep->name,