Re: PROBLEM : Device Re-enumeration not happening after reset

Am Freitag 26 Oktober 2007 schrieb Jithu Joseph:
> The problem i am facing is that after issuing the  "usb_reset_device
> (struct usb_device *dev) ", though i am able to see a reset in the
> CATC( USB protocol Analyzer) , the disconnect of the current usb
> client driver  is not getting called  and also the probe of the DFU
> driver is not getting called (the driver has support for both the
> VIDs/PIDs)

This check from usb_reset_device() should trigger.

	/* Device might have changed firmware (DFU or similar) */
	if (memcmp(&udev->descriptor, &descriptor, sizeof descriptor)
			|| config_descriptors_changed (udev)) {
		dev_info(&udev->dev, "device firmware changed\n");
		udev->descriptor = descriptor;	/* for disconnect() calls */
		goto re_enumerate;
  	}

I suggest you dump the old and the new descriptors immediately before
they are compared. If they are identical we need to find out what happens.

	Regards
		Oliver

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