Messages in this thread |  | | | Date | Thu, 3 Apr 2008 21:34:34 -0700 | | From | Andrew Morton <> | | Subject | Re: [PATCH] usbcore, kernel 2.6.18.1 | |
On Thu, 03 Apr 2008 15:14:54 +0200 Gerd Luyten <gluyten@skynet.be> wrote:
> This patch is to eventually detect a Velleman K8055 USB device.
> Without the patch it will fail detection with following errors:
> usb 1-2: can't read configurations, error -110
> => probably because of usb non-conformance reason of the K8055 card.
> (timing issues...)
>
> With this patch, detection will keep on trying until usb card gets
> recognized.
> This patch adds a device reset in the "fail:" sequence instead of just
> marking the device state as NOTATTACHED.
>
> [gluyten@workstation pup214]$ diff -u
> linux-2.6.18.1/drivers/usb/core/hub.c hub.c
> --- linux-2.6.18.1/drivers/usb/core/hub.c 2006-10-14
> 05:34:03.000000000 +0200
> +++ hub.c 2008-04-03 14:47:49.000000000 +0200
> @@ -1450,7 +1450,9 @@
> return 0;
>
> fail:
> - usb_set_device_state(udev, USB_STATE_NOTATTACHED);
> +// usb_set_device_state(udev, USB_STATE_NOTATTACHED);
> + usb_lock_device_for_reset(udev, NULL);
> + usb_reset_composite_device(udev, NULL);
> return err;
> }
>
2.6.18 is very old. Does 2.6.24 (or later) also need fixing?
Thanks.
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