Re: [linux-usb-devel] [PATCH] USB: Only enable autosuspend by default on certain device classes

[Oliver Neukum]

Am Freitag 03 August 2007 schrieb Matthew Garrett:
> On Thu, Aug 02, 2007 at 11:01:08PM -0700, David Brownell wrote:
> 
> > Seems to me it ought to be practical to organize a database that can
> > be consulted by an outcall from udev, disabling autosuspend on devices
> > which are known to be broken.  The "modules.usbmap" syntax is an obvious
> > place to start (painful though it is), and I'm sure there are folk who
> > would prefer web-accessible/updatable databases.
> 
> It's certainly possible to do that, but it's also possible to have a 
> userspace solution that whitelists devices. The question is whether the 
> default kernel behaviour should be "Save power, but potentially break 
> some of my devices" or "Don't break my devices, but use some more 
> powre".

If both options have drawbacks, IMHO we follow the standard, which
says that devices must support suspension.

	Regards
		Oliver

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/