This is a note to let you know that I've just added the patch titled
ACPI / hotplug: Do not execute "insert in progress" _OST
to the 3.12-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-hotplug-do-not-execute-insert-in-progress-_ost.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 176a88d79d6b5aebabaff16734e8b3107efcaaad Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Date: Thu, 7 Nov 2013 01:42:17 +0100
Subject: ACPI / hotplug: Do not execute "insert in progress" _OST
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
commit 176a88d79d6b5aebabaff16734e8b3107efcaaad upstream.
According to the ACPI spec (5.0, Section 6.3.5), the "Device
insertion in progress (pending)" (0x80) _OST status code is
reserved for the "Insertion Processing" (0x200) source event
which is "a result of an OSPM action". Specifically, it is not
a notification, so that status code should not be used during
notification processing, which unfortunately is done by
acpi_scan_bus_device_check().
For this reason, drop the ACPI_OST_SC_INSERT_IN_PROGRESS _OST
status evaluation from there (it was a mistake to put it in there
in the first place).
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/scan.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -331,8 +331,6 @@ static void acpi_scan_bus_device_check(a
goto out;
}
}
- acpi_evaluate_hotplug_ost(handle, ost_source,
- ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);
error = acpi_bus_scan(handle);
if (error) {
acpi_handle_warn(handle, "Namespace scan failure\n");
Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are
queue-3.12/acpi-ec-ensure-lock-is-acquired-before-accessing-ec-struct-members.patch
queue-3.12/acpi-hotplug-fix-handle_root_bridge_removal.patch
queue-3.12/acpi-video-quirk-initial-backlight-level-0.patch
queue-3.12/acpi-hotplug-do-not-execute-insert-in-progress-_ost.patch
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