summaryrefslogtreecommitdiffstats
path: root/drivers/usb/host/ohci-sa1111.c
diff options
context:
space:
mode:
authorRussell King <rmk+kernel@arm.linux.org.uk>2012-01-26 12:10:20 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-03-24 12:30:13 +0100
commit846a70487e2a0e5045c6a428a0969d3e0490b359 (patch)
tree49458980d4d950e8592715616df956a3ba05a85e /drivers/usb/host/ohci-sa1111.c
parentUSB: sa1111: reorganize ohci-sa1111.c (diff)
downloadlinux-846a70487e2a0e5045c6a428a0969d3e0490b359.tar.xz
linux-846a70487e2a0e5045c6a428a0969d3e0490b359.zip
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>
Diffstat (limited to 'drivers/usb/host/ohci-sa1111.c')
-rw-r--r--drivers/usb/host/ohci-sa1111.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 83f3a40db538..95c3f0fb48d3 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,
};