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    SubjectRe: [linux-usb-devel] Error -71 on device descriptor read/all
    Date
    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

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