linux-kernel - [PATCH 2/4] usb: gadget: fotg210-udc: Fix a memory leak

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Date:   Fri, 12 Jan 2018 22:44:31 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     balbi@...nel.org, gregkh@...uxfoundation.org, bhumirks@...il.com,
        leoyang.li@....com
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/4] usb: gadget: fotg210-udc: Fix a memory leak

The memory referenced by the 'fotg210->ep[]' array, is never freed.
So there is a memory leak in the error handling path of the probe function
and when the driver is unloaded.
Use 'devm_kzalloc()' to fix these leaks.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 2fea32a153b7..a4d46b9759be 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -1101,7 +1101,8 @@ static int fotg210_udc_probe(struct platform_device *pdev)
 		goto err_alloc;
 
 	for (i = 0; i < FOTG210_MAX_NUM_EP; i++) {
-		fotg210->ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL);
+		fotg210->ep[i] = devm_kzalloc(&pdev->dev,
+					sizeof(struct fotg210_ep), GFP_KERNEL);
 		if (!fotg210->ep[i])
 			goto err_alloc;
 	}
-- 
2.14.1