From 030ab58b075c04b5286d2787860373dcc30020c6 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 20 Aug 2025 17:38:17 +0300 Subject: [PATCH] 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 Acked-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20250820143824.551777-3-sakari.ailus@linux.intel.com --- drivers/usb/core/config.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index cda595b4014fb..29fcbd6de482c 100644 --- 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); -- 2.47.3