usb: core: Add PM runtime calls to usb_hcd_platform_shutdown

[ Upstream commit 8ead7e817224d7832fe51a19783cb8fcadc79467 ]

If ohci-platform is runtime suspended, we can currently get an "imprecise
external abort" on reboot with ohci-platform loaded when PM runtime
is implemented for the SoC.

Let's fix this by adding PM runtime support to usb_hcd_platform_shutdown.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 1c21955..b82a7d7 100644 (file)
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -3017,6 +3017,9 @@ usb_hcd_platform_shutdown(struct platform_device *dev)
 {
        struct usb_hcd *hcd = platform_get_drvdata(dev);
 
+       /* No need for pm_runtime_put(), we're shutting down */
+       pm_runtime_get_sync(&dev->dev);
+
        if (hcd->driver->shutdown)
                hcd->driver->shutdown(hcd);
 }