linux-kernel - [PATCH] phy: usb: sunplus: Fix memleak in update_disc

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Message-ID: <20221108061113.35964-1-yuehaibing@huawei.com>
Date:   Tue, 8 Nov 2022 14:11:13 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <vincent.sunplus@...il.com>, <vkoul@...nel.org>,
        <kishon@...nel.org>
CC:     <linux-usb@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] phy: usb: sunplus: Fix memleak in update_disc_vol()

'otp_v' is allocated in nvmem_cell_read(), it should be freed
before return.

Fixes: 99d9ccd97385 ("phy: usb: Add USB2.0 phy driver for Sunplus SP7021")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/phy/sunplus/phy-sunplus-usb2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/sunplus/phy-sunplus-usb2.c b/drivers/phy/sunplus/phy-sunplus-usb2.c
index e827b79f6d49..450cf8e6d7fb 100644
--- a/drivers/phy/sunplus/phy-sunplus-usb2.c
+++ b/drivers/phy/sunplus/phy-sunplus-usb2.c
@@ -96,6 +96,7 @@ static int update_disc_vol(struct sp_usbphy *usbphy)
 		set = *(otp_v + 1);
 		set = (set << (sizeof(char) * 8)) | *otp_v;
 		set = (set >> usbphy->disc_vol_addr_off) & J_DISC;
+		kfree(otp_v);
 	}
 
 	if (IS_ERR(otp_v) || set == 0)
-- 
2.17.1