linux-kernel - [PATCH] USB: of: filter disabled device node

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Message-Id: <20251121080905.2237648-1-xiazhengqiao@huaqin.corp-partner.google.com>
Date: Fri, 21 Nov 2025 16:09:05 +0800
From: Zhengqiao Xia <xiazhengqiao@...qin.corp-partner.google.com>
To: gregkh@...uxfoundation.org
Cc: linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zhengqiao Xia <xiazhengqiao@...qin.corp-partner.google.com>
Subject: [PATCH] USB: of: filter disabled device node

We should not point the of_node of a USB device to a disabled devicetree
node. Otherwise, the interface under this USB device will not be able
to register.

Signed-off-by: Zhengqiao Xia <xiazhengqiao@...qin.corp-partner.google.com>
---
 drivers/usb/core/of.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index 763e4122ed5b3..6bb577e711811 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -31,6 +31,9 @@ struct device_node *usb_of_get_device_node(struct usb_device *hub, int port1)
 		if (of_property_read_u32(node, "reg", &reg))
 			continue;
 
+		if (!of_device_is_available(node))
+			continue;
+
 		if (reg == port1)
 			return node;
 	}
-- 
2.34.1