Hi, Todd Brandt <todd.e.brandt@xxxxxxxxxxxxxxx> writes: > On Mon, 2017-01-09 at 09:44 +0100, Oliver Neukum wrote: >> On Fri, 2017-01-06 at 16:45 -0800, Todd Brandt wrote: >> > Add a kernel parameter that replaces the USB_RESUME_TIMEOUT >> > and other hardcoded delay numbers with the USB spec minimums. >> >> Hi, >> >> the problem with that is that distros cannot use it. It is obviously >> better than nothing but it seems to me that we can do better than an >> all or nothing option here. > > Well my main purpose in getting this out there is to get the seed > planted for further optimization. The focus right now is just advanced > users who want to optimize their personal machines. > > But you're right, it wouldn't be responsible to enable this feature by > default in a distro like android or chromium. > >> For example it would be much safer to enable this for hubs of the >> first level and internal devices. I disagree. I think it's only safe to do so for devices known to be compliant. This would mean, we need to start building a whitelist of compliant devices and only for such devices should we enforce compliant behavior. > Is there a universal way to reliably determine which USB devices are > internal? not that I know of :-( These devices are enumerated the same way as any other. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
