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.
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
---
drivers/usb/host/ohci-sa1111.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
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 @@ static const struct hc_driver ohci_sa1111_hc_driver = {
*/
.start = ohci_sa1111_start,
.stop = ohci_stop,
+ .shutdown = ohci_shutdown,
/*
* managing i/o requests and associated device resources
@@ -232,6 +233,16 @@ static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev)
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 @@ static struct sa1111_driver ohci_hcd_sa1111_driver = {
.devid = SA1111_DEVID_USB,
.probe = ohci_hcd_sa1111_probe,
.remove = ohci_hcd_sa1111_remove,
+ .shutdown = ohci_hcd_sa1111_shutdown,
};
--
1.7.4.4
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