path: root/drivers/usb/host/ehci.h
diff options
authorAlan Stern <stern@rowland.harvard.edu>2010-05-12 18:21:35 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-20 13:21:45 -0700
commit16032c4f5b291af541e9114a09ea20ff5a0dc474 (patch)
tree8f7a6b98859220410bdde08671039ec888635ffe /drivers/usb/host/ehci.h
parenteab80de01cb398419ef3305f35abcb367c647c8b (diff)
USB: EHCI: fix controller wakeup flag settings during suspend
This patch (as1380) fixes a bug in the wakeup settings for EHCI host controllers. When the controller is suspended, if it isn't enabled for remote wakeup then we have to turn off all the port wakeup flags. Disabling PCI PME# isn't good enough, because some systems (Intel) evidently use alternate wakeup signalling paths. In addition, the patch improves the handling of the Intel Moorestown hardware by performing various power-up and power-down delays just once instead of once for each port (i.e., the delays are moved outside of the port loops). This requires extra code, but the total delay time is reduced. There are also a few additional minor cleanups. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Ondrej Zary <linux@rainbow-software.org> CC: Alek Du <alek.du@intel.com> CC: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci.h')
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 4ebe9ad209e..650a687f285 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -536,6 +536,16 @@ struct ehci_fstn {
+/* Prepare the PORTSC wakeup flags during controller suspend/resume */
+#define ehci_prepare_ports_for_controller_suspend(ehci) \
+ ehci_adjust_port_wakeup_flags(ehci, true);
+#define ehci_prepare_ports_for_controller_resume(ehci) \
+ ehci_adjust_port_wakeup_flags(ehci, false);