Re: Error -71 on device descriptor read/all
Oliver Neukum <[email protected]>
| Newsgroups | gmane.linux.usb.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
Am Dienstag, 19. Juni 2007 schrieb Paul Walmsley: > On Tue, 19 Jun 2007, Oliver Neukum wrote: > > > Am Dienstag, 19. Juni 2007 schrieb Chuck Ebbert: > > > >> Try disabling CONFIG_USB_SUSPEND > >> > >> [usb developers: what are the drawbacks of doing this?] > > > > Increased power consumption. > > speaking of CONFIG_USB_SUSPEND, I've encountered at least one device -- a > Canon EOS 5D camera -- that, after the bus suspends, must be powercycled > in order to return the camera's interrupt endpoints to a functional state. > How are these types of problems handled, currently? Is this something for > a blacklist? drivers/usb/core/quirks.c Please try the reset-resume quirk before you use the no-autosuspend quirk. Regards Oliver ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel