usb: core: Parse eUSB2 companion descriptors for high speed devices only

Check that a device is a high-speed one before proceeding to parse the
eUSB2 isochronous endpoint companion descriptors.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250820143824.551777-3-sakari.ailus@linux.intel.com

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index cda595b4014fb820a9be554889aa45567dce1564..29fcbd6de482cbdfc3ae836eadbab63fac560e9d 100644 (file)
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -507,7 +507,8 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
        }
 
        /* Parse a possible eUSB2 periodic endpoint companion descriptor */
-       if (bcdUSB == 0x0220 && !le16_to_cpu(d->wMaxPacketSize) &&
+       if (udev->speed == USB_SPEED_HIGH && bcdUSB == 0x0220 &&
+           !le16_to_cpu(d->wMaxPacketSize) &&
            (usb_endpoint_xfer_isoc(d) || usb_endpoint_xfer_int(d)))
                usb_parse_eusb2_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
                                                        endpoint, buffer, size);