Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752056AbdFUHFF (ORCPT ); Wed, 21 Jun 2017 03:05:05 -0400 Received: from mail-io0-f195.google.com ([209.85.223.195]:33346 "EHLO mail-io0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750927AbdFUHFD (ORCPT ); Wed, 21 Jun 2017 03:05:03 -0400 From: "Lee, Chun-Yi" X-Google-Original-From: "Lee, Chun-Yi" To: "Rafael J . Wysocki" Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, "Lee, Chun-Yi" , Len Brown , Michal Hocko Subject: [PATCH v2] acpi: handle the acpi hotplug schedule error Date: Wed, 21 Jun 2017 15:04:34 +0800 Message-Id: <20170621070434.16570-1-jlee@suse.com> X-Mailer: git-send-email 2.12.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1197 Lines: 42 Kernel should decrements the reference count of acpi device when the scheduling of acpi hotplug work is failed, and evaluates _OST to notify BIOS the failure. v2: To simplify the code. (Andy Shevchenko) Cc: "Rafael J. Wysocki" Cc: Len Brown Cc: Michal Hocko Reviewed-by: Andy Shevchenko Signed-off-by: "Lee, Chun-Yi" --- drivers/acpi/bus.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 34fbe02..91adb71 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -427,12 +427,17 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) driver->ops.notify(adev, type); - if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type))) - return; + if (hotplug_event) { + if (ACPI_SUCCESS(acpi_hotplug_schedule(adev, type))) + return; + goto err_put_device; + } acpi_bus_put_acpi_device(adev); return; + err_put_device: + acpi_bus_put_acpi_device(adev); err: acpi_evaluate_ost(handle, type, ost_code, NULL); } -- 2.10.2