Author: hselasky
Date: Tue Apr 23 06:26:54 2013
New Revision: 249786
URL: http://svnweb.freebsd.org/changeset/base/249786
Log:
Add descriptive comment.
Modified:
head/sys/dev/usb/controller/xhci.c
Modified: head/sys/dev/usb/controller/xhci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci.c Tue Apr 23 01:09:22 2013
(r249785)
+++ head/sys/dev/usb/controller/xhci.c Tue Apr 23 06:26:54 2013
(r249786)
@@ -554,6 +554,12 @@ xhci_init(struct xhci_softc *sc, device_
void
xhci_uninit(struct xhci_softc *sc)
{
+ /*
+ * NOTE: At this point the control transfer process is gone
+ * and "xhci_configure_msg" is no longer called. Consequently
+ * waiting for the configuration messages to complete is not
+ * needed.
+ */
usb_bus_mem_free_all(&sc->sc_bus, &xhci_iterate_hw_softc);
cv_destroy(&sc->sc_cmd_cv);
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