USB: OHCI: Properly handle ohci-sm501 suspend

Suspend scenario in case of ohci-sm501 glue was not
properly handled as it was not suspending generic part
of ohci controller.  Alan Stern suggested, properly
handle ohci-sm501 suspend scenario.

Calling explicitly the ohci_suspend() routine in
ohci_sm501_suspend() will ensure proper handling of suspend
scenario.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index d479d5d..2a5de5f 100644 (file)
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -216,14 +216,21 @@ static int ohci_hcd_sm501_drv_remove(struct platform_device *pdev)
 static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg)
 {
        struct device *dev = &pdev->dev;
-       struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(pdev));
+       struct usb_hcd  *hcd = platform_get_drvdata(pdev);
+       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+       bool do_wakeup = device_may_wakeup(dev);
+       int ret;
 
        if (time_before(jiffies, ohci->next_statechange))
                msleep(5);
        ohci->next_statechange = jiffies;
 
+       ret = ohci_suspend(hcd, do_wakeup);
+       if (ret)
+               return ret;
+
        sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 0);
-       return 0;
+       return ret;
 }
 
 static int ohci_sm501_resume(struct platform_device *pdev)