On Tue, 5 Feb 2008, David Brownell wrote: > The reason to try powering off the ports is that, well, the system is > shutting down. Why waste (potentially battery) power? Whatever runs > next can turn it back on if it wants. And if PPS isn't set, then trying > to clear the per-port power-enabled flag is supposed to be a NOP.
There's another reason for powering off the ports during shutdown -- without it, some mahcines would reboot instead of shutting down! Arguably this may have been an ACPI or BIOS bug rather than EHCI, but nevertheless, the fix worked. See http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=8903795a5275e0366acf961190c57074ad27f9bb and http://bugzilla.kernel.org/show_bug.cgi?id=7828 Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
