linux-kernel - [PATCH] usb: cdns3: Fix double resource release in cdns3_pci

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Message-Id: <20251026090859.33107-1-linmq006@gmail.com>
Date: Sun, 26 Oct 2025 17:08:59 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: Peter Chen <peter.chen@...nel.org>,
	Pawel Laszczak <pawell@...ence.com>,
	Roger Quadros <rogerq@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <felipe.balbi@...ux.intel.com>,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: linmq006@...il.com,
	stable@...r.kernel.org
Subject: [PATCH] usb: cdns3: Fix double resource release in cdns3_pci_probe

The driver uses pcim_enable_device() to enable the PCI device,
the device will be automatically disabled on driver detach through
the managed device framework. The manual pci_disable_device() calls
in the error paths are therefore redundant and should be removed.

Found via static anlaysis and this is similar to commit 99ca0b57e49f
("thermal: intel: int340x: processor: Fix warning during module unload").

Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Cc: stable@...r.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/usb/cdns3/cdns3-pci-wrap.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c
index 3b3b3dc75f35..57f57c24c663 100644
--- a/drivers/usb/cdns3/cdns3-pci-wrap.c
+++ b/drivers/usb/cdns3/cdns3-pci-wrap.c
@@ -98,10 +98,8 @@ static int cdns3_pci_probe(struct pci_dev *pdev,
 		wrap = pci_get_drvdata(func);
 	} else {
 		wrap = kzalloc(sizeof(*wrap), GFP_KERNEL);
-		if (!wrap) {
-			pci_disable_device(pdev);
+		if (!wrap)
 			return -ENOMEM;
-		}
 	}
 
 	res = wrap->dev_res;
@@ -160,7 +158,6 @@ static int cdns3_pci_probe(struct pci_dev *pdev,
 		/* register platform device */
 		wrap->plat_dev = platform_device_register_full(&plat_info);
 		if (IS_ERR(wrap->plat_dev)) {
-			pci_disable_device(pdev);
 			err = PTR_ERR(wrap->plat_dev);
 			kfree(wrap);
 			return err;
-- 
2.39.5 (Apple Git-154)