linux-kernel - [PATCH v2 2/5] usb: Use the cached ACPI

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Date:   Mon, 13 Dec 2021 13:32:40 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Prashant Malani <pmalani@...omium.org>,
        linux-acpi@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/5] usb: Use the cached ACPI _PLD entry

The _PLD is now stored, so there is no need to separately
evaluate it.

Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
 drivers/usb/core/usb-acpi.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index 50b2fc7fcc0e3..3b21c15be548f 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -176,22 +176,19 @@ usb_acpi_get_companion_for_port(struct usb_port *port_dev)
 static struct acpi_device *
 usb_acpi_find_companion_for_port(struct usb_port *port_dev)
 {
+	struct acpi_device_location *location;
 	struct acpi_device *adev;
-	struct acpi_pld_info *pld;
-	acpi_handle *handle;
-	acpi_status status;
 
 	adev = usb_acpi_get_companion_for_port(port_dev);
 	if (!adev)
 		return NULL;
 
-	handle = adev->handle;
-	status = acpi_get_physical_device_location(handle, &pld);
-	if (ACPI_SUCCESS(status) && pld) {
-		port_dev->location = USB_ACPI_LOCATION_VALID
-			| pld->group_token << 8 | pld->group_position;
-		port_dev->connect_type = usb_acpi_get_connect_type(handle, pld);
-		ACPI_FREE(pld);
+	location = acpi_device_get_location(adev);
+	if (location) {
+		port_dev->location = USB_ACPI_LOCATION_VALID |
+				     location->pld->group_token << 8 |
+				     location->pld->group_position;
+		port_dev->connect_type = usb_acpi_get_connect_type(adev->handle, location->pld);
 	}
 
 	return adev;
-- 
2.33.0