From: Miaoqian Lin <linmq006@gmail.com>
To: Peter Chen <peter.chen@kernel.org>,
Pawel Laszczak <pawell@cadence.com>,
Roger Quadros <rogerq@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Felipe Balbi <felipe.balbi@linux.intel.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com, stable@vger.kernel.org
Subject: [PATCH] usb: cdns3: Fix double resource release in cdns3_pci_probe
Date: Sun, 26 Oct 2025 17:08:59 +0800 [thread overview]
Message-ID: <20251026090859.33107-1-linmq006@gmail.com> (raw)
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@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.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)
next reply other threads:[~2025-10-26 9:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-26 9:08 Miaoqian Lin [this message]
2025-10-27 3:24 ` [PATCH] usb: cdns3: Fix double resource release in cdns3_pci_probe Peter Chen (CIX)
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