[sane-devel] xerox_mfp usb malfunction

[m. allan noah]

Thanks for the patch. I must confess I don't quite understand the
code. If the caller provides a device name which does not exactly
exist, I think the backend should just return an error, instead of
trying to find a similarly named device. There is no guarantee that
device names will have a consistent format on all systems. Perhaps the
author will comment.

allan

On Mon, Mar 7, 2011 at 6:50 PM, Warren Turkal <wt at penguintechs.org> wrote:
> I have a small patch that works around a bug in the xerox_mfp driver.
> It is attached.
>
> The bug boils down to the following. The devname generated by the
> sanei code is "libusb" instead of "usb". I think that this may stop
> the xerox_mfp backend from working on any system using libusb to talk
> to a USB scanner. I feel that this workaround patch may represent the
> wrong solution, but it does work and illustrate the problem. If it is
> a proper solution, feel free to apply under the normal project license
> (GPL+Sane exception).
>
> Also, I would like to report that the Samsung SCX-4623FW (usb ids:
> 0x04e8 0x3440) seems to work as well as sane can. With the attached
> patch, this all-in-one printer can be used with the USB as well as the
> network connections. Not bad for a <$150 printer.
>
> As an aside, this printer is also supported by generic PCL drivers for
> CUPS. This device is the only all-in-one laser printer that I have
> found that is fully supported by drivers that are fully open and whose
> SANE drivers are maintained by the SANE project. The weird thing is
> that Samsung has proprietary drivers for download from their site. I
> am not sure why they wouldn't just do some touch ups to the already
> open drivers.
>
> Thanks,
> wt
>
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