diff options
| author | Sebastian Andrzej Siewior <sebastian@breakpoint.cc> | 2012-08-19 19:54:59 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-09-06 16:52:26 (GMT) |
| commit | 3b9c1c5ba7a95caae8440ea47308496b14f7301a (patch) | |
| tree | 900030b8df96bbbda492274d9ae37f06ce3919a8 /drivers | |
| parent | 1b68a4ca2d038addb7314211d122fb6d7002b38b (diff) | |
| download | linux-3b9c1c5ba7a95caae8440ea47308496b14f7301a.tar.xz | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/dummy_hcd.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 0e58a46..afdbb1c 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -1916,6 +1916,27 @@ done: return retval; } +/* usb 3.0 root hub device descriptor */ +struct { + struct usb_bos_descriptor bos; + struct usb_ss_cap_descriptor ss_cap; +} __packed usb3_bos_desc = { + + .bos = { + .bLength = USB_DT_BOS_SIZE, + .bDescriptorType = USB_DT_BOS, + .wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)), + .bNumDeviceCaps = 1, + }, + .ss_cap = { + .bLength = USB_DT_USB_SS_CAP_SIZE, + .bDescriptorType = USB_DT_DEVICE_CAPABILITY, + .bDevCapabilityType = USB_SS_CAP_TYPE, + .wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION), + .bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION), + }, +}; + static inline void ss_hub_descriptor(struct usb_hub_descriptor *desc) { @@ -2006,6 +2027,18 @@ static int dummy_hub_control( else hub_descriptor((struct usb_hub_descriptor *) buf); break; + + case DeviceRequest | USB_REQ_GET_DESCRIPTOR: + if (hcd->speed != HCD_USB3) + goto error; + + if ((wValue >> 8) != USB_DT_BOS) + goto error; + + memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc)); + retval = sizeof(usb3_bos_desc); + break; + case GetHubStatus: *(__le32 *) buf = cpu_to_le32(0); break; |