linux-kernel - [PATCH] usb: usb-acpi: fix uninitialized variable in usb_acpi_get_connect

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Date: Fri, 15 Mar 2024 18:21:00 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Mathias Nyman <mathias.nyman@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] usb: usb-acpi: fix uninitialized variable in
 usb_acpi_get_connect_type()

The "pld" pointer is uninitialized if acpi_get_physical_device_location()
fails.  Initialize it to NULL.

Fixes: f3ac348e6e04 ("usb: usb-acpi: Set port connect type of not connectable ports correctly")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/usb/core/usb-acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index f250dfc3b14d..2aeeaa389380 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -153,8 +153,8 @@ usb_acpi_get_connect_type(struct usb_port *port_dev, acpi_handle *handle)
 {
 	enum usb_port_connect_type connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_pld_info *pld = NULL;
 	union acpi_object *upc = NULL;
-	struct acpi_pld_info *pld;
 	acpi_status status;
 
 	/*
-- 
2.43.0