From: Tony Lindgren <tony@atomide.com>
Date: Fri, 22 Mar 2019 21:54:05 +0000 (-0700)
Subject: usb: core: Add PM runtime calls to usb_hcd_platform_shutdown
X-Git-Tag: v5.4.17~3631^2~63
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=8ead7e817224d7832fe51a19783cb8fcadc79467;p=arm%2Flinux.git

usb: core: Add PM runtime calls to usb_hcd_platform_shutdown

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>
---

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 3189181bb628..b227a2651e7c 100644
--- 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);
 }