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 my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>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
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>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/hcd.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index ab1bb3b538ac..e518f6438877 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2485,6 +2485,8 @@ 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);
--
2.13.3