When plugging in an Oculus Rift CV1 HMD, it takes a long time until the hidraw devices appear, specifically two control transfers time out querying the HID report descriptors:
$ echo 1 > /sys/module/hid/parameters/debug usb 1-3.1: new full-speed USB device number 11 using xhci_hcd usb 1-3.1: New USB device found, idVendor=2833, idProduct=0031 usb 1-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-3.1: Product: Rift usb 1-3.1: Manufacturer: Oculus VR, Inc. drivers/hid/usbhid/hid-core.c: HID probe called for ifnum 0 hid-generic 0003:2833:0031.0005: Kicking head 1 tail 0 drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x0101 wIndex=0x0000 wLength=62 drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x010b wIndex=0x0000 wLength=64 [10 s delay] drivers/hid/usbhid/hid-core.c: timeout waiting for ctrl or out queue to clear drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x010c wIndex=0x0000 wLength=64 hid-generic 0003:2833:0031.0005: usb_submit_urb(ctrl) failed: -1 hid-generic 0003:2833:0031.0005: timeout initializing reports hid-generic 0003:2833:0031.0005: hiddev0,hidraw0: USB HID v1.10 Device [Oculus VR, Inc. Rift] on usb-0000:00:14.0-3.1/input0 drivers/hid/usbhid/hid-core.c: HID probe called for ifnum 1 hid-generic 0003:2833:0031.0006: Kicking head 1 tail 0 drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x0101 wIndex=0x0001 wLength=62 drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x010b wIndex=0x0001 wLength=64 [10 s delay] drivers/hid/usbhid/hid-core.c: timeout waiting for ctrl or out queue to clear drivers/hid/usbhid/hid-core.c: submitting ctrl urb: Get_Report wValue=0x010c wIndex=0x0001 wLength=64 hid-generic 0003:2833:0031.0006: usb_submit_urb(ctrl) failed: -1 hid-generic 0003:2833:0031.0006: timeout initializing reports hid-generic 0003:2833:0031.0006: hiddev0,hidraw1: USB HID v1.10 Device [Oculus VR, Inc. Rift] on usb-0000:00:14.0-3.1/input1 usbcore: registered new interface driver usbhid usbhid: USB HID core driver These timeouts disappear when setting HID_QUIRK_NO_INIT_REPORTS. The hidraw devices appear quickly and are functional. Signed-off-by: Philipp Zabel <philipp.za...@gmail.com> --- drivers/hid/usbhid/hid-quirks.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index 6316498b7812..7b2df4042167 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -111,6 +111,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_OCULUSVR, USB_DEVICE_ID_RIFT_CV1, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET }, { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1640, HID_QUIRK_NOGET }, { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, -- 2.11.0