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Commit 846a7048 authored by Russell King's avatar Russell King
Browse files

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: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 132db99a

drivers/usb/host/ohci-sa1111.c

+12 −0
Original line number Diff line number Diff line
@@ -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,

};