Patch "ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()" has been added to the 4.4-stable tree

Patch "ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()" has been added to the 4.4-stable tree

[gregkh]

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

    ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()

to the 4.4-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:
     acpi-pci-hotplug-unlock-in-error-path-in-acpiphp_enable_slot.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 2c3033a0664dfae91e1dee7fabac10f24354b958 Mon Sep 17 00:00:00 2001
From: Insu Yun <wuninsu@gmail.com>
Date: Sat, 23 Jan 2016 15:44:19 -0500
Subject: ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()

From: Insu Yun <wuninsu@gmail.com>

commit 2c3033a0664dfae91e1dee7fabac10f24354b958 upstream.

In acpiphp_enable_slot(), there is a missing unlock path
when error occurred.  It needs to be unlocked before returning
an error.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/hotplug/acpiphp_glue.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -953,8 +953,10 @@ int acpiphp_enable_slot(struct acpiphp_s
 {
 	pci_lock_rescan_remove();
 
-	if (slot->flags & SLOT_IS_GOING_AWAY)
+	if (slot->flags & SLOT_IS_GOING_AWAY) {
+		pci_unlock_rescan_remove();
 		return -ENODEV;
+	}
 
 	/* configure all functions */
 	if (!(slot->flags & SLOT_ENABLED))


Patches currently in stable-queue which might be from wuninsu@gmail.com are

queue-4.4/drm-fix-missing-reference-counting-decrease.patch
queue-4.4/acpi-pci-hotplug-unlock-in-error-path-in-acpiphp_enable_slot.patch
queue-4.4/tipc-unlock-in-error-path.patch