Messages in this thread | | | Date | Fri, 6 Jun 2008 10:39:19 -0400 (EDT) | From | Alan Stern <> | Subject | Re: 2.6.25-rc6: CONFIG_USB_PERSIST forced on |
| |
On Fri, 6 Jun 2008, Pavel Machek wrote:
> Hi! > > In 2.6.26-rc5, > > -config USB_PERSIST > - bool "USB device persistence during system suspend (DANGEROUS)" > > is now on. Given that it was previously marked "DANGEROUS", that seems > quite a change to me.
It is. Basically I did it because Linus asked for it -- or at least, for something like it. He felt that the danger of not having USB_PERSIST when you need it is worse than the danger of having it when you don't want it.
> Besides, it seems to have broken usblp hibernation support, and maybe > other devices that does not have reset_resume() present. (Big thanks > for Oliver for doing investigation).
URL? It's hard to see how lack of reset-resume support would mess anything up worse than it would be without USB_PERSIST.
> [Or is it that now USB_PERSIST is conditional on /sys fs setting, so > while setting it on individual device is dangerous, it is still N by > default? Changelog does not tell me...?]
USB_PERSIST is (and has always been) conditional on the power/persist sysfs attribute setting. The difference is that now the setting starts out as On whereas before it started out as Off, and there no longer is a Kconfig option to remove USB_PERSIST entirely.
Alan Stern
| |