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 <stable@xxxxxxxxxxxxxxx> know about it.
>From cd5a6a4fdaba150089af2afc220eae0fef74878a Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
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 <rafael.j.wysocki@xxxxxxxxx>
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.
Suggested-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/hcd.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -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 rafael.j.wysocki@xxxxxxxxx are
queue-3.18/usb-hcd-mark-secondary-hcd-as-dead-if-the-primary-one-died.patch