Am Freitag 03 August 2007 schrieb Matthew Garrett:
> > Also, we have udev rules for SANE that disables their autosuspend
> > settings, which handles the majority of the devices we have seen with
> > problems.
>
> Several printers seem to have the issue as well, and the blacklist seems
> to contain some odd miscellaneous devices like the Blackberry. The main
Then make autosuspend support for the printer driver a config option.
This is not a reason to change the core usb code. The core code needs
to be involved only for device that are driven through usbfs. The major types
are:
- scanners
- PTP devices
- OBEX
Scanners are covered by SANE's latest CVS
PTP are a class and could be covered by a single udev rule
Obex is comm, so the patch wouldn't help.
> concern I have is that kernel developers just don't tend to be the sort
> of people that use webcams, printers or scanners, so we're relying on
> normal users to go to the effort of reporting that their device has
> stopped working.
Kernel developers are a diverser lot than you think ;-)
We don't enable autosuspend in drivers we can't test, except where
the lack of a kernel driver forces us to use a broad swipe. Printers
were tested, too, and most printers seem to work.
Regards
Oliver
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