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 |
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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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