Em Thu, 6 Feb 2020 16:45:27 +0100
Takashi Iwai <tiwai@xxxxxxx> escreveu:
> Josef reported that his old-and-good Plextor ConvertX M402U video
> converter spews lots of WARNINGs on the recent kernels, and it turned
> out that the device uses a bulk endpoint for interrupt handling just
> like 2250 board.
>
> For fixing it, generalize the check with the proper verification of
> the endpoint instead of hard-coded board type check.
>
> Fixes: 7e5219d18e93 ("[media] go7007: Fix 2250 urb type")
> Reported-and-tested-by: Josef Möllers <josef.moellers@xxxxxxxx>
> BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1162583
> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=206427
> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
>
> ---
> drivers/media/usb/go7007/go7007-usb.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/usb/go7007/go7007-usb.c b/drivers/media/usb/go7007/go7007-usb.c
> index ff2aa057c1fb..f889c9d740cd 100644
> --- a/drivers/media/usb/go7007/go7007-usb.c
> +++ b/drivers/media/usb/go7007/go7007-usb.c
> @@ -1044,6 +1044,7 @@ static int go7007_usb_probe(struct usb_interface *intf,
> struct go7007_usb *usb;
> const struct go7007_usb_board *board;
> struct usb_device *usbdev = interface_to_usbdev(intf);
> + struct usb_host_endpoint *ep;
> unsigned num_i2c_devs;
> char *name;
> int video_pipe, i, v_urb_len;
> @@ -1140,7 +1141,8 @@ static int go7007_usb_probe(struct usb_interface *intf,
> if (usb->intr_urb->transfer_buffer == NULL)
> goto allocfail;
>
> - if (go->board_id == GO7007_BOARDID_SENSORAY_2250)
> + ep = usb->usbdev->ep_in[4];
Hmm... why [4] above?
I mean, what other drivers do is something like:
for (i = 0; i < intf->num_altsetting; i++) {
for (j = 0; j < intf->altsetting[i].desc.bNumEndpoints; j++) {
ep = &intf->altsetting[i].endpoint[j].desc;
/* some logic to check ep and change alt if needed */
}
}
> + if (usb_endpoint_type(&ep->desc) == USB_ENDPOINT_XFER_BULK)
> usb_fill_bulk_urb(usb->intr_urb, usb->usbdev,
> usb_rcvbulkpipe(usb->usbdev, 4),
> usb->intr_urb->transfer_buffer, 2*sizeof(u16),
Cheers,
Mauro
