OHCI: add auto-stop support

This patch (as790b) adds "autostop" support to ohci-hcd: the driver
will automatically stop the host controller when no devices have been
connected for at least one second.  This feature is useful when the
USB autosuspend facility isn't available, such as when
CONFIG_USB_SUSPEND hasn't been set.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 93fdc3c35341..a2f42a2f47c6 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -388,6 +388,7 @@ struct ohci_hcd {
         u32                     hc_control;     /* copy of hc control reg */
         unsigned long           next_statechange;       /* suspend/resume */
         u32                     fminterval;             /* saved register */
+        unsigned                autostop:1;     /* rh auto stopping/stopped */
 
         unsigned long           flags;          /* for HC bugs */
 #define OHCI_QUIRK_AMD756       0x01                    /* erratum #4 */