[PATCH v1 1/1] usb: acpi: Switch to use acpi_evaluate_dsm_typed()

[Andy Shevchenko]

The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/usb/core/usb-acpi.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index 533baa85083c..a34b22537d7c 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -81,15 +81,11 @@ int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index)
 		return -ENODEV;
 	}
 
-	obj = acpi_evaluate_dsm(port_handle, &guid, 0,
-				USB_DSM_DISABLE_U1_U2_FOR_PORT, NULL);
-
-	if (!obj)
-		return -ENODEV;
-
-	if (obj->type != ACPI_TYPE_INTEGER) {
+	obj = acpi_evaluate_dsm_typed(port_handle, &guid, 0,
+				      USB_DSM_DISABLE_U1_U2_FOR_PORT, NULL,
+				      ACPI_TYPE_INTEGER);
+	if (!obj) {
 		dev_dbg(&hdev->dev, "evaluate port-%d _DSM failed\n", port1);
-		ACPI_FREE(obj);
 		return -EINVAL;
 	}
 
-- 
2.39.0