Patch "ACPI / scan: Apply default enumeration to devices with ACPI drivers" has been added to the 4.11-stable tree

Patch "ACPI / scan: Apply default enumeration to devices with ACPI drivers" has been added to the 4.11-stable tree

[gregkh]

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

    ACPI / scan: Apply default enumeration to devices with ACPI drivers

to the 4.11-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-apply-default-enumeration-to-devices-with-acpi-drivers.patch
and it can be found in the queue-4.11 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 f5beabfe61794d9a9d9549d387cda2bffd81e504 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Mon, 17 Apr 2017 01:19:50 +0200
Subject: ACPI / scan: Apply default enumeration to devices with ACPI drivers

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

commit f5beabfe61794d9a9d9549d387cda2bffd81e504 upstream.

The current code in acpi_bus_attach() is inconsistent with respect
to device objects with ACPI drivers bound to them, as it allows
ACPI drivers to bind to device objects with existing "physical"
device companions, but it doesn't allow "physical" device objects
to be created for ACPI device objects with ACPI drivers bound to
them.  Thus, in some cases, the outcome depends on the ordering
of events which is confusing at best.

For this reason, modify acpi_bus_attach() to call
acpi_default_enumeration() for device objects with the
pnp.type.platform_id flag set regardless of whether or not
any ACPI drivers are bound to them.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Joey Lee <jlee@suse.com>
Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/acpi/scan.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1866,10 +1866,10 @@ static void acpi_bus_attach(struct acpi_
 	if (ret < 0)
 		return;
 
-	if (ret > 0 || !device->pnp.type.platform_id)
-		acpi_device_set_enumerated(device);
-	else
+	if (device->pnp.type.platform_id)
 		acpi_default_enumeration(device);
+	else
+		acpi_device_set_enumerated(device);
 
  ok:
 	list_for_each_entry(child, &device->children, node)


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

queue-4.11/acpi-scan-apply-default-enumeration-to-devices-with-acpi-drivers.patch
queue-4.11/acpi-scan-fix-enumeration-for-special-spi-and-i2c-devices.patch