This is a note to let you know that I've just added the patch titled
xhci: fix finding correct bus_state structure for USB 3.1 hosts
to the 4.13-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:
xhci-fix-finding-correct-bus_state-structure-for-usb-3.1-hosts.patch
and it can be found in the queue-4.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5a838a13c9b4e5dd188b7a6eaeb894e9358ead0c Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Date: Mon, 18 Sep 2017 17:39:13 +0300
Subject: xhci: fix finding correct bus_state structure for USB 3.1 hosts
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
commit 5a838a13c9b4e5dd188b7a6eaeb894e9358ead0c upstream.
xhci driver keeps a bus_state structure for each hcd (usb2 and usb3)
The structure is picked based on hcd speed, but driver only compared
for HCD_USB3 speed, returning the wrong bus_state for HCD_USB31 hosts.
This caused null pointer dereference errors in bus_resume function.
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1674,7 +1674,7 @@ struct xhci_bus_state {
static inline unsigned int hcd_index(struct usb_hcd *hcd)
{
- if (hcd->speed == HCD_USB3)
+ if (hcd->speed >= HCD_USB3)
return 0;
else
return 1;
Patches currently in stable-queue which might be from mathias.nyman@xxxxxxxxxxxxxxx are
queue-4.13/usb-xhci-free-the-right-ring-in-xhci_add_endpoint.patch
queue-4.13/xhci-fix-finding-correct-bus_state-structure-for-usb-3.1-hosts.patch
queue-4.13/revert-xhci-limit-usb2-port-wake-support-for-amd-promontory-hosts.patch
queue-4.13/xhci-set-missing-superspeedplus-link-protocol-bit-in-roothub-descriptor.patch
queue-4.13/usb-host-xhci-plat-allow-sysdev-to-inherit-from-acpi.patch
queue-4.13/usb-pci-quirks.c-corrected-timeout-values-used-in-handshake.patch
queue-4.13/xhci-fix-wrong-endpoint-esit-value-shown-in-tracing.patch
queue-4.13/xhci-fix-sleeping-with-spin_lock_irq-held-in-asmedia-1042a-workaround.patch