diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-26 11:10:20 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-24 11:30:13 +0000 |
| commit | 846a70487e2a0e5045c6a428a0969d3e0490b359 (patch) | |
| tree | 49458980d4d950e8592715616df956a3ba05a85e | |
| parent | 132db99ae2c6f6a586fc932507fcf4484d90c8fa (diff) | |
| download | um-headers-846a70487e2a0e5045c6a428a0969d3e0490b359.tar.gz | |
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>
| -rw-r--r-- | 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 83f3a40db538a..95c3f0fb48d3c 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, }; |