[3.13.y.z extended stable] Patch "usb: dwc3: core: fix ordering for PHY suspend" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    usb: dwc3: core: fix ordering for PHY suspend

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.9.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 64a2b7c9603932964ec2e2c767dd4afafd6d8a82 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <balbi at ti.com>
Date: Wed, 3 Sep 2014 16:13:37 -0500
Subject: usb: dwc3: core: fix ordering for PHY suspend

commit dc99f16f076559235c92d3eb66d03d1310faea08 upstream.

We can't suspend the PHYs before dwc3_core_exit_mode()
has been called, that's because the host and/or device
sides might still need to communicate with the far end
link partner.

Fixes: 8ba007a (usb: dwc3: core: enable the USB2 and USB3 phy in probe)
Suggested-by: Alan Stern <stern at rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi at ti.com>
[ kamal: backport to 3.13-stable: context ]
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/usb/dwc3/core.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 8c9c4cf..f074755 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -583,9 +583,6 @@ static int dwc3_remove(struct platform_device *pdev)
 {
 	struct dwc3	*dwc = platform_get_drvdata(pdev);

-	usb_phy_set_suspend(dwc->usb2_phy, 1);
-	usb_phy_set_suspend(dwc->usb3_phy, 1);
-
 	dwc3_debugfs_exit(dwc);

 	switch (dwc->dr_mode) {
@@ -606,6 +603,10 @@ static int dwc3_remove(struct platform_device *pdev)

 	dwc3_event_buffers_cleanup(dwc);
 	dwc3_free_event_buffers(dwc);
+
+	usb_phy_set_suspend(dwc->usb2_phy, 1);
+	usb_phy_set_suspend(dwc->usb3_phy, 1);
+
 	dwc3_core_exit(dwc);

 	pm_runtime_put_sync(&pdev->dev);
--
1.9.1