Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753349Ab3GHAAc (ORCPT ); Sun, 7 Jul 2013 20:00:32 -0400 Received: from hydra.sisk.pl ([212.160.235.94]:33739 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753254Ab3GHAAa (ORCPT ); Sun, 7 Jul 2013 20:00:30 -0400 From: "Rafael J. Wysocki" To: ACPI Devel Maling List Cc: LKML , Toshi Kani , Bjorn Helgaas , Yinghai Lu Subject: [PATCH] ACPI / scan: Always call acpi_bus_scan() for bus check notifications Date: Mon, 08 Jul 2013 02:10:13 +0200 Message-ID: <2230821.QbNohsyO0O@vostro.rjw.lan> User-Agent: KMail/4.9.5 (Linux/3.10.0+; KDE/4.9.5; x86_64; ; ) MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1559 Lines: 44 From: Rafael J. Wysocki An ACPI_NOTIFY_BUS_CHECK notification means that we should scan the entire namespace starting from the given handle even if the device represented by that handle is present (other devices below it may just have been added). For this reason, modify acpi_scan_bus_device_check() to always run acpi_bus_scan() if the notification being handled is of type ACPI_NOTIFY_BUS_CHECK. Signed-off-by: Rafael J. Wysocki Cc: 3.10+ --- drivers/acpi/scan.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) Index: linux-pm/drivers/acpi/scan.c =================================================================== --- linux-pm.orig/drivers/acpi/scan.c +++ linux-pm/drivers/acpi/scan.c @@ -353,10 +353,12 @@ static void acpi_scan_bus_device_check(a mutex_lock(&acpi_scan_lock); lock_device_hotplug(); - acpi_bus_get_device(handle, &device); - if (device) { - dev_warn(&device->dev, "Attempt to re-insert\n"); - goto out; + if (ost_source != ACPI_NOTIFY_BUS_CHECK) { + acpi_bus_get_device(handle, &device); + if (device) { + dev_warn(&device->dev, "Attempt to re-insert\n"); + goto out; + } } acpi_evaluate_hotplug_ost(handle, ost_source, ACPI_OST_SC_INSERT_IN_PROGRESS, NULL); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/