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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Yu Kuai <yukuai3@huawei.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.7 242/393] MIPS: OCTEON: add missing put_device() call in dwc3_octeon_device_init()
Date:   Mon, 17 Aug 2020 17:14:52 +0200
Message-Id: <20200817143831.358053883@linuxfoundation.org>
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From: Yu Kuai <yukuai3@huawei.com>

[ Upstream commit e8b9fc10f2615b9a525fce56981e40b489528355 ]

if of_find_device_by_node() succeed, dwc3_octeon_device_init() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: 93e502b3c2d4 ("MIPS: OCTEON: Platform support for OCTEON III USB controller")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/cavium-octeon/octeon-usb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/mips/cavium-octeon/octeon-usb.c b/arch/mips/cavium-octeon/octeon-usb.c
index cc88a08bc1f73..4017398519cf9 100644
--- a/arch/mips/cavium-octeon/octeon-usb.c
+++ b/arch/mips/cavium-octeon/octeon-usb.c
@@ -518,6 +518,7 @@ static int __init dwc3_octeon_device_init(void)
 
 			res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 			if (res == NULL) {
+				put_device(&pdev->dev);
 				dev_err(&pdev->dev, "No memory resources\n");
 				return -ENXIO;
 			}
@@ -529,8 +530,10 @@ static int __init dwc3_octeon_device_init(void)
 			 * know the difference.
 			 */
 			base = devm_ioremap_resource(&pdev->dev, res);
-			if (IS_ERR(base))
+			if (IS_ERR(base)) {
+				put_device(&pdev->dev);
 				return PTR_ERR(base);
+			}
 
 			mutex_lock(&dwc3_octeon_clocks_mutex);
 			dwc3_octeon_clocks_start(&pdev->dev, (u64)base);
-- 
2.25.1