Patch "USB: hcd: Mark secondary HCD as dead if the primary one died" has been added to the 3.18-stable tree

This is a note to let you know that I've just added the patch titled

USB: hcd: Mark secondary HCD as dead if the primary one died

to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-hcd-mark-secondary-hcd-as-dead-if-the-primary-one-died.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: "Rafael J. Wysocki" <[email protected]>
Date: Tue, 25 Jul 2017 23:58:50 +0200
Subject: USB: hcd: Mark secondary HCD as dead if the primary one died

From: Rafael J. Wysocki <[email protected]>

commit cd5a6a4fdaba150089af2afc220eae0fef74878a upstream.

Make usb_hc_died() clear the HCD_FLAG_RH_RUNNING flag for the shared HCD and set HCD_FLAG_DEAD for it, in analogy with what is done for the primary one.

Among other thigs, this prevents check_root_hub_suspended() from returning -EBUSY for dead HCDs which helps to work around system suspend issues in some situations.

This actually fixes occasional suspend failures on one of my test machines.

---
 drivers/usb/core/hcd.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -2398,6 +2398,8 @@ void usb_hc_died (struct usb_hcd *hcd)
 	}
 	if (usb_hcd_is_primary_hcd(hcd) && hcd->shared_hcd) {
 		hcd = hcd->shared_hcd;
+		clear_bit(HCD_FLAG_RH_RUNNING, &hcd->flags);
+		set_bit(HCD_FLAG_DEAD, &hcd->flags);
 		if (hcd->rh_registered) {
 			clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
 

Patches currently in stable-queue which might be from [email protected] are

queue-3.18/usb-hcd-mark-secondary-hcd-as-dead-if-the-primary-one-died.patch