USB: sa1111: add OHCI shutdown methods
Add OHCI shutdown methods to cleanly shutdown the OHCI controller on
system shutdowns and reboots. This avoids the controller continuing
to run should be soft-reboot the platform, potentially scribbling
over system memory.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 83f3a40..95c3f0f 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -89,6 +89,7 @@
*/
.start = ohci_sa1111_start,
.stop = ohci_stop,
+ .shutdown = ohci_shutdown,
/*
* managing i/o requests and associated device resources
@@ -232,6 +233,16 @@
return 0;
}
+static void ohci_hcd_sa1111_shutdown(struct sa1111_dev *dev)
+{
+ struct usb_hcd *hcd = sa1111_get_drvdata(dev);
+
+ if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
+ hcd->driver->shutdown(hcd);
+ sa1111_stop_hc(dev);
+ }
+}
+
static struct sa1111_driver ohci_hcd_sa1111_driver = {
.drv = {
.name = "sa1111-ohci",
@@ -240,4 +251,5 @@
.devid = SA1111_DEVID_USB,
.probe = ohci_hcd_sa1111_probe,
.remove = ohci_hcd_sa1111_remove,
+ .shutdown = ohci_hcd_sa1111_shutdown,
};