From patchwork Thu Nov 8 11:04:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 1714991 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 62B5DDF280 for ; Thu, 8 Nov 2012 10:59:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755348Ab2KHK7W (ORCPT ); Thu, 8 Nov 2012 05:59:22 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:32218 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754052Ab2KHK7E (ORCPT ); Thu, 8 Nov 2012 05:59:04 -0500 X-IronPort-AV: E=Sophos;i="4.80,737,1344182400"; d="scan'208";a="6161807" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 08 Nov 2012 18:57:20 +0800 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id qA8AwsHG006480; Thu, 8 Nov 2012 18:58:56 +0800 Received: from ghost.fnst.cn.fujitsu.com ([10.167.225.226]) by fnstmail02.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012110818585964-1025738 ; Thu, 8 Nov 2012 18:58:59 +0800 From: Wen Congyang To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-acpi@vger.kernel.org, Len Brown Cc: "Rafael J. Wysocki" , Andrew Morton , Yasuaki Ishimatsu , Lai Jiangshan , Jiang Liu , KOSAKI Motohiro , Minchan Kim , Mel Gorman , David Rientjes , Konrad Rzeszutek Wilk , Toshi Kani , Wen Congyang , Jiang Liu , Benjamin Herrenschmidt , Paul Mackerras , Christoph Lameter Subject: [Patch v4 6/7] acpi_memhotplug.c: bind the memory device when the driver is being loaded Date: Thu, 8 Nov 2012 19:04:52 +0800 Message-Id: <1352372693-32411-7-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1352372693-32411-1-git-send-email-wency@cn.fujitsu.com> References: <1352372693-32411-1-git-send-email-wency@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/11/08 18:58:59, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/11/08 18:59:02, Serialize complete at 2012/11/08 18:59:02 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org We had introduced acpi_hotmem_initialized to avoid strange add_memory fail message. But the memory device may not be used by the kernel, and the device should be bound when the driver is being loaded. Remove acpi_hotmem_initialized to allow that the device can be bound when the driver is being loaded. CC: David Rientjes CC: Jiang Liu CC: Len Brown CC: Benjamin Herrenschmidt CC: Paul Mackerras CC: Christoph Lameter Cc: Minchan Kim CC: Andrew Morton CC: KOSAKI Motohiro CC: Yasuaki Ishimatsu CC: Rafael J. Wysocki CC: Konrad Rzeszutek Wilk Signed-off-by: Wen Congyang --- drivers/acpi/acpi_memhotplug.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 1fb1342..8a8716f 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -88,8 +88,6 @@ struct acpi_memory_device { struct list_head res_list; /* protected by list_lock */ }; -static int acpi_hotmem_initialized; - static acpi_status acpi_memory_get_resource(struct acpi_resource *resource, void *context) { @@ -520,15 +518,6 @@ static int acpi_memory_device_add(struct acpi_device *device) printk(KERN_DEBUG "%s \n", acpi_device_name(device)); - /* - * Early boot code has recognized memory area by EFI/E820. - * If DSDT shows these memory devices on boot, hotplug is not necessary - * for them. So, it just returns until completion of this driver's - * start up. - */ - if (!acpi_hotmem_initialized) - return 0; - if (!acpi_memory_check_device(mem_device)) { /* call add_memory func */ result = acpi_memory_enable_device(mem_device); @@ -644,7 +633,6 @@ static int __init acpi_memory_device_init(void) return -ENODEV; } - acpi_hotmem_initialized = 1; return 0; }