Index: HelenOS.config
===================================================================
--- HelenOS.config	(revision eb212e70f73e6c51b0393c67ea1e45940de721b4)
+++ HelenOS.config	(revision ca2815eb035910c0bb4c6f348ec29513bde33098)
@@ -573,10 +573,7 @@
 ! CONFIG_RUN_VIRTUAL_USB_HC (n/y)
 
-% Polling UHCI (no interrupts)
-! [PLATFORM=ia32|PLATFORM=amd64] CONFIG_USBHC_NO_INTERRUPTS (n/y)
-
 % OHCI root hub port power switching
-@ "no"
-@ "ganged"
-@ "per_port"
-! OHCI_POWER_SWITCH (choice)
+@ "no" All root hub ports are always powered.
+@ "ganged" Root hub ports are all powered or all off.
+@ "per_port" Powered status of every root hub port is independent.
+![PLATFORM=ia32|PLATFORM=amd64] OHCI_POWER_SWITCH (choice)
Index: defaults/amd64/Makefile.config
===================================================================
--- defaults/amd64/Makefile.config	(revision eb212e70f73e6c51b0393c67ea1e45940de721b4)
+++ defaults/amd64/Makefile.config	(revision ca2815eb035910c0bb4c6f348ec29513bde33098)
@@ -65,2 +65,4 @@
 CONFIG_MOUNT_DATA = n
 
+# OHCI root hub power switch, ganged is enough
+OHCI_POWER_SWITCH = ganged
Index: defaults/ia32/Makefile.config
===================================================================
--- defaults/ia32/Makefile.config	(revision eb212e70f73e6c51b0393c67ea1e45940de721b4)
+++ defaults/ia32/Makefile.config	(revision ca2815eb035910c0bb4c6f348ec29513bde33098)
@@ -71,2 +71,4 @@
 CONFIG_MOUNT_DATA = n
 
+# OHCI root hub power switch, ganged is enough
+OHCI_POWER_SWITCH = ganged