[PATCH v1] usb: core: Add ACPI support for USB interfaces

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The ACPI companion of the device has to be set for USB interfaces
in order to read and attach the properties described in the ACPI table.
Use ACPI_COMPANION_SET macro to set this.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/usb/core/message.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 5adf489428aa..d5f834f16993 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -5,6 +5,7 @@
  * Released under the GPLv2 only.
  */
 
+#include <linux/acpi.h>
 #include <linux/pci.h>	/* for scatterlist macros */
 #include <linux/usb.h>
 #include <linux/module.h>
@@ -1941,6 +1942,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 			intf->dev.of_node = usb_of_get_interface_node(dev,
 					configuration, ifnum);
 		}
+		ACPI_COMPANION_SET(&intf->dev, ACPI_COMPANION(&dev->dev));
 		intf->dev.driver = NULL;
 		intf->dev.bus = &usb_bus_type;
 		intf->dev.type = &usb_if_device_type;
-- 
2.25.1




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