Am Samstag, 14. November 2009 22:01:16 schrieb Theodore Kilgore: > Reset the camera? By what means would you have in mind? Close the app and > re-plug the camera? It has been tried, of course. No, I had the driver calling usb_reset_device() in mind. Or for testing purposes, you manually via usbfs. > Also, there is even so the more basic question that if this is the > particular manner of the failure, then why does the failure occur on 3 > UHCI-based machines and it does not occur on 3 OHCI-based machines? Not to If I had to guess and this is wild speculation, because UHCI schedules periodic transfers differently from OHCI. > But, wait a minute. Could it be that the detection scheme is killing the > data packets? Maybe. But, again, this is happening only on UHCI hardware. > And also one might assume that I tried lots of things. For example, is it > possible to bypass the detection scheme completely by writing code which > is "hard wired" to initialize only an mr97310a CIF type 1 camera? > Certainly it is. Have I done that and tested said code? Certainly, I have. > Did it make the camera to work on an OHCI machine, as one ought to expect? > Yes. Did it make the camera to work on a UHCI machine? No. So the other type works on both controllers? Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
