linux-kernel - [PATCH v3 2/2] usb: gadget: udc: replace kzalloc with devm_kzalloc in mv_udc

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Date:   Sat, 25 Feb 2023 12:11:49 +0800
From:   void0red <void0red@...il.com>
To:     sergei.shtylyov@...il.com
Cc:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, mudongliangabcd@...il.com,
        Kang Chen <void0red@...il.com>
Subject: [PATCH v3 2/2] usb: gadget: udc: replace kzalloc with devm_kzalloc in mv_udc_probe

From: Kang Chen <void0red@...il.com>

This driver uses the unified memory management api, so replace
kzalloc with devm_kzalloc to avoid a memory leak.

Reported-by: Dongliang Mu <mudongliangabcd@...il.com>
Link: https://lore.kernel.org/all/CAD-N9QX5i5toj8cs7DxBjYWtRGf3ZRnfTAf809sFW6iX0Ktfmw@mail.gmail.com

Signed-off-by: Kang Chen <void0red@...il.com>
---
v3 -> v2: split the patch into two
v2 -> v1: replace kzalloc with devm_kzalloc

 drivers/usb/gadget/udc/mv_udc_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 6dd6d52de..08474c08d 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -2229,7 +2229,7 @@ static int mv_udc_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&udc->status_req->queue);
 
 	/* allocate a small amount of memory to get valid address */
-	udc->status_req->req.buf = kzalloc(8, GFP_KERNEL);
+	udc->status_req->req.buf = devm_kzalloc(&pdev->dev, 8, GFP_KERNEL);
 	if (!udc->status_req->req.buf) {
 		retval = -ENOMEM;
 		goto err_destroy_dma;
-- 
2.34.1