linux-kernel - [PATCH] MIPS: OCTEON: add put_device() after of_find_device_by

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Date:   Tue, 16 Nov 2021 08:10:51 +0000
From:   cgel.zte@...il.com
To:     tsbogend@...ha.franken.de
Cc:     ye.guojin@....com.cn, yangyingliang@...wei.com,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] MIPS: OCTEON: add put_device() after of_find_device_by_node()

From: Ye Guojin <ye.guojin@....com.cn>

This was found by coccicheck:
./arch/mips/cavium-octeon/octeon-platform.c, 332, 1-7, ERROR missing
put_device; call of_find_device_by_node on line 324, but without a
corresponding object release within this function.
./arch/mips/cavium-octeon/octeon-platform.c, 395, 1-7, ERROR missing
put_device; call of_find_device_by_node on line 387, but without a
corresponding object release within this function.
./arch/mips/cavium-octeon/octeon-usb.c, 512, 3-9, ERROR missing
put_device; call of_find_device_by_node on line 515, but without a
corresponding object release within this function.
./arch/mips/cavium-octeon/octeon-usb.c, 543, 1-7, ERROR missing
put_device; call of_find_device_by_node on line 515, but without a
corresponding object release within this function.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Ye Guojin <ye.guojin@....com.cn>
---
 arch/mips/cavium-octeon/octeon-platform.c | 2 ++
 arch/mips/cavium-octeon/octeon-usb.c      | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index d56e9b9d2e43..a994022e32c9 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -328,6 +328,7 @@ static int __init octeon_ehci_device_init(void)

 	pd->dev.platform_data = &octeon_ehci_pdata;
 	octeon_ehci_hw_start(&pd->dev);
+	put_device(&pd->dev);

 	return ret;
 }
@@ -391,6 +392,7 @@ static int __init octeon_ohci_device_init(void)

 	pd->dev.platform_data = &octeon_ohci_pdata;
 	octeon_ohci_hw_start(&pd->dev);
+	put_device(&pd->dev);

 	return ret;
 }
diff --git a/arch/mips/cavium-octeon/octeon-usb.c b/arch/mips/cavium-octeon/octeon-usb.c
index 6e4d3619137a..4df919d26b08 100644
--- a/arch/mips/cavium-octeon/octeon-usb.c
+++ b/arch/mips/cavium-octeon/octeon-usb.c
@@ -537,6 +537,7 @@ static int __init dwc3_octeon_device_init(void)
 			devm_iounmap(&pdev->dev, base);
 			devm_release_mem_region(&pdev->dev, res->start,
 						resource_size(res));
+			put_device(&pdev->dev);
 		}
 	} while (node != NULL);

-- 
2.25.1