From: Peter Chen <peter.chen@cixtech.com>
Date: Wed, 13 May 2026 08:53:10 +0000 (+0800)
Subject: usb: cdns3: plat: fix unbalanced pm_runtime_forbid() call permanently leaks the runti... 
X-Git-Tag: v7.1-rc6~9^2~23
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ae6f3b82324e4f39ad8443c9020787e6fc889637;p=thirdparty%2Fkernel%2Flinux.git

usb: cdns3: plat: fix unbalanced pm_runtime_forbid() call permanently leaks the runtime PM usage counter across bind/unbind cycles

Call pm_runtime_allow(dev) conditionally at cdns3_plat_remove.

Fixes: f738957277ba ("usb: cdns3: Split core.c into cdns3-plat and core.c file")
Cc: stable <stable@kernel.org>
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/linux-devicetree/agKaEePSFknhDBg2@nchen-desktop/T/#m21e1d9c1574eb127ce03c0c2a1a49002ce435b52
Signed-off-by: Peter Chen <peter.chen@cixtech.com>
Link: https://patch.msgid.link/20260513085310.2217547-3-peter.chen@cixtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/cdns3/cdns3-plat.c b/drivers/usb/cdns3/cdns3-plat.c
index d2e8d1e9007b5..94e9706a1806b 100644
--- a/drivers/usb/cdns3/cdns3-plat.c
+++ b/drivers/usb/cdns3/cdns3-plat.c
@@ -186,6 +186,9 @@ static void cdns3_plat_remove(struct platform_device *pdev)
 	struct device *dev = cdns->dev;
 
 	pm_runtime_get_sync(dev);
+	if (!(cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)))
+		pm_runtime_allow(dev);
+
 	pm_runtime_disable(dev);
 	pm_runtime_put_noidle(dev);
 	cdns_remove(cdns);