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usb: gadget: composite: report bcdUSB 0x0210 when WebUSB is enabled (v6.8) #368

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usb: gadget: composite: report bcdUSB 0x0210 when WebUSB is enabled (v6.8) #368

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usb: gadget: composite: report bcdUSB 0x0210 when WebUSB is enabled
evgeny-boger Aug 31, 2026
b400d1e
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evgeny-boger Aug 31, 2026
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8 changes: 8 additions & 0 deletions debian/changelog
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Original file line number Diff line number Diff line change
@@ -1,3 +1,11 @@
linux-wb (6.8.0-wb162) stable; urgency=medium

* usb: gadget: composite: report bcdUSB 0x0210 when WebUSB is enabled,
so that Chromium reads the WebUSB landing page and shows the
plug-in notification for the Debug Network gadget

-- Evgeny Boger <boger@wirenboard.com> Mon, 31 Aug 2026 17:04:48 +0300

linux-wb (6.8.0-wb161) stable; urgency=medium

* pinctrl-sunxi: fix output latch corruption on GPIO writes: a write to
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8 changes: 7 additions & 1 deletion drivers/usb/gadget/composite.c
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Expand Up @@ -1838,7 +1838,13 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
cdev->desc.bcdUSB = cpu_to_le16(0x0210);
}
} else {
if (gadget->lpm_capable || cdev->use_webusb)
/*
* WebUSB requires bcdUSB >= 2.10; Chromium does not
* read the landing page from a device below that.
*/
if (cdev->use_webusb)
cdev->desc.bcdUSB = cpu_to_le16(0x0210);
else if (gadget->lpm_capable)
cdev->desc.bcdUSB = cpu_to_le16(0x0201);
else
cdev->desc.bcdUSB = cpu_to_le16(0x0200);
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