Fwd: USB to parallel for printer HP LaserJet 4mL

[Hans Petter Selasky]

On 06/16/14 11:18, Matthias Apitz wrote:
> El día Monday, June 16, 2014 a las 11:07:35AM +0200, Hans Petter Selasky escribió:
>
>>> Hi,
>>>
>>> I did:
>>>
>>> # kldunload ulpt.ko
>>> # kldload modules/usb/ulpt/ulpt.ko
>>> # sysctl hw.usb.ulpt.debug=15
>>> hw.usb.ulpt.debug: 0 -> 15
>>>
>>> now I power-cycled the printer, let it print the self test page, plug'ed
>>> in the cable into the printers parallel port, plug'ed in the USB end
>>> into the laptop, and:
>>>
>>
>> Run the command _before_ plugging the printer cable.
>
> No change, log is:
>
>
> Jun 16 11:15:03 La-Habana root: Unknown USB device: vendor 0x0c45 product 0x62c0 bus uhub3
> Jun 16 11:15:04 La-Habana root: Unknown USB device: vendor 0x0c45 product 0x62c0 bus uhub3
> Jun 16 11:15:14 La-Habana kernel: ugen1.2: <Prlific Technology Inc.> at usbus1
> Jun 16 11:15:14 La-Habana kernel: ulpt_probe:
> Jun 16 11:15:14 La-Habana kernel: ulpt_probe:
> Jun 16 11:15:14 La-Habana kernel: ulpt_attach: sc=0xc5529400
> Jun 16 11:15:14 La-Habana kernel: ulpt0: <Prlific Technology Inc. IEEE-1284 Controller, class 0/0, rev 1.00/2.00, addr 2> on usbus1
> Jun 16 11:15:14 La-Habana kernel: ulpt_attach: setting alternate config number: 1
> Jun 16 11:15:15 La-Habana kernel: ulpt0: using bi-directional mode
> Jun 16 11:15:15 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 11:15:22 La-Habana last message repeated 8 times
> Jun 16 11:15:23 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 11:15:45 La-Habana last message repeated 21 times
> Jun 16 11:15:45 La-Habana kernel: ulpt_write_callback: state=0x0 actlen=0
> Jun 16 11:15:46 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 11:16:06 La-Habana last message repeated 20 times
> Jun 16 11:16:06 La-Habana kernel: ulpt0: at uhub1, port 1, addr 2 (disconnected)
> Jun 16 11:16:06 La-Habana kernel: ulpt_detach: sc=0xc5529400
> Jun 16 11:16:06 La-Habana kernel: ulpt_write_callback: state=0x2 actlen=0
> Jun 16 11:16:07 La-Habana kernel: ulpt_probe:
> Jun 16 11:16:07 La-Habana kernel: ulpt_probe:
> Jun 16 11:16:07 La-Habana kernel: ulpt_attach: sc=0xc5839100
> Jun 16 11:16:07 La-Habana kernel: ulpt0: <Prlific Technology Inc. IEEE-1284 Controller, class 0/0, rev 1.00/2.00, addr 2> on usbus1
> Jun 16 11:16:07 La-Habana kernel: ulpt_attach: setting alternate config number: 1
> Jun 16 11:16:07 La-Habana kernel: ulpt0: using bi-directional mode
> Jun 16 11:16:07 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
>

Hi,

Try to comment out starting of bulk read transfers:

static void
ulpt_start_read(struct usb_fifo *fifo)
{
#if 0
         struct ulpt_softc *sc = usb_fifo_softc(fifo);

         usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]);
#endif
}

--HPS