Patch "ACPI / scan: Set the visited flag for all enumerated devices" has been added to the 4.9-stable tree

Patch "ACPI / scan: Set the visited flag for all enumerated devices" has been added to the 4.9-stable tree

[gregkh]

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

    ACPI / scan: Set the visited flag for all enumerated devices

to the 4.9-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-scan-set-the-visited-flag-for-all-enumerated-devices.patch
and it can be found in the queue-4.9 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 f406270bf73d71ea7b35ee3f7a08a44f6594c9b1 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Tue, 11 Apr 2017 00:23:42 +0200
Subject: ACPI / scan: Set the visited flag for all enumerated devices

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

commit f406270bf73d71ea7b35ee3f7a08a44f6594c9b1 upstream.

Commit 10c7e20b2ff3 (ACPI / scan: fix enumeration (visited) flags for
bus rescans) attempted to fix a problem with ACPI-based enumerateion
of I2C/SPI devices, but it forgot to ensure that the visited flag
will be set for all of the other enumerated devices, so fix that.

Fixes: 10c7e20b2ff3 (ACPI / scan: fix enumeration (visited) flags for bus rescans)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=194885
Reported-and-tested-by: Kevin Locke <kevin@kevinlocke.name>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/acpi/scan.c |   19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1827,15 +1827,20 @@ static void acpi_bus_attach(struct acpi_
 		return;
 
 	device->flags.match_driver = true;
-	if (!ret) {
-		ret = device_attach(&device->dev);
-		if (ret < 0)
-			return;
-
-		if (!ret && device->pnp.type.platform_id)
-			acpi_default_enumeration(device);
+	if (ret > 0) {
+		acpi_device_set_enumerated(device);
+		goto ok;
 	}
 
+	ret = device_attach(&device->dev);
+	if (ret < 0)
+		return;
+
+	if (ret > 0 || !device->pnp.type.platform_id)
+		acpi_device_set_enumerated(device);
+	else
+		acpi_default_enumeration(device);
+
  ok:
 	list_for_each_entry(child, &device->children, node)
 		acpi_bus_attach(child);


Patches currently in stable-queue which might be from rafael.j.wysocki@intel.com are

queue-4.9/acpi-scan-set-the-visited-flag-for-all-enumerated-devices.patch
queue-4.9/cpufreq-bring-cpus-up-even-if-cpufreq_online-failed.patch