linux-kernel - [PATCH] usb: isp1760: Add missing error check for platform_get

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Message-Id: <20260210090202.2332349-1-nichen@iscas.ac.cn>
Date: Tue, 10 Feb 2026 17:02:02 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: rui.silva@...aro.org,
	gregkh@...uxfoundation.org,
	laurent.pinchart@...asonboard.com,
	balbi@...com
Cc: linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] usb: isp1760: Add missing error check for platform_get_resource()

Check the return value of platform_get_resource() to prevent potential
NULL pointer dereference when the memory resource is unavailable.

Fixes: 7ef077a8ad35 ("usb: isp1760: Move driver from drivers/usb/host/ to drivers/usb/isp1760/")
Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 drivers/usb/isp1760/isp1760-if.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/isp1760/isp1760-if.c b/drivers/usb/isp1760/isp1760-if.c
index a64190addba6..60f81ec81373 100644
--- a/drivers/usb/isp1760/isp1760-if.c
+++ b/drivers/usb/isp1760/isp1760-if.c
@@ -196,6 +196,8 @@ static int isp1760_plat_probe(struct platform_device *pdev)
 	int ret;
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem_res)
+		return -EINVAL;
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-- 
2.25.1