usb: gadget: dummy_hcd: add support for USB_DT_BOS on rh
Without a reply for USB_DT_BOS the USB3 mode does not work since
448b6eb1
("USB: Make sure to fetch the BOS desc for roothubs.).
Cc: stable@vger.kernel.org #v3.5
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
parent
1b68a4ca2d
commit
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@ -1916,6 +1916,27 @@ done:
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return retval;
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}
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/* usb 3.0 root hub device descriptor */
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struct {
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struct usb_bos_descriptor bos;
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struct usb_ss_cap_descriptor ss_cap;
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} __packed usb3_bos_desc = {
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.bos = {
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.bLength = USB_DT_BOS_SIZE,
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.bDescriptorType = USB_DT_BOS,
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.wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)),
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.bNumDeviceCaps = 1,
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},
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.ss_cap = {
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.bLength = USB_DT_USB_SS_CAP_SIZE,
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.bDescriptorType = USB_DT_DEVICE_CAPABILITY,
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.bDevCapabilityType = USB_SS_CAP_TYPE,
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.wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION),
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.bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION),
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},
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};
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static inline void
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ss_hub_descriptor(struct usb_hub_descriptor *desc)
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{
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@ -2006,6 +2027,18 @@ static int dummy_hub_control(
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else
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hub_descriptor((struct usb_hub_descriptor *) buf);
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break;
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case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
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if (hcd->speed != HCD_USB3)
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goto error;
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if ((wValue >> 8) != USB_DT_BOS)
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goto error;
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memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc));
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retval = sizeof(usb3_bos_desc);
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break;
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case GetHubStatus:
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*(__le32 *) buf = cpu_to_le32(0);
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break;
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