From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752029Ab2C1GXn (ORCPT ); Wed, 28 Mar 2012 02:23:43 -0400 Received: from mga02.intel.com ([134.134.136.20]:58478 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751786Ab2C1GW4 (ORCPT ); Wed, 28 Mar 2012 02:22:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,352,1309762800"; d="scan'208";a="122519302" From: Lin Ming To: Zhang Rui , Jeff Garzik , Alan Stern , "Rafael J. Wysocki" , Tejun Heo , Aaron Lu Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-pm@vger.kernel.org, linux-acpi Subject: [PATCH v3 5/7] libata: tell scsi layer device supports runtime power off Date: Wed, 28 Mar 2012 14:22:00 +0800 Message-Id: <1332915722-15963-6-git-send-email-ming.m.lin@intel.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1332915722-15963-1-git-send-email-ming.m.lin@intel.com> References: <1332915722-15963-1-git-send-email-ming.m.lin@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If ATA device supports "Device Attention", then tell scsi layer that the device supports runtime power off. Acked-by: Aaron Lu Signed-off-by: Lin Ming --- drivers/ata/libata-scsi.c | 2 ++ include/scsi/scsi_device.h | 1 + 2 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 231c3ec..0bfbe41 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3445,6 +3445,8 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync) dev->sdev = sdev; scsi_device_put(sdev); ata_acpi_bind(dev); + if (dev->flags & ATA_DFLAG_DA) + sdev->power_off = 1; } else { dev->sdev = NULL; } diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 77273f2..0f69612 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -151,6 +151,7 @@ struct scsi_device { unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */ unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */ unsigned is_visible:1; /* is the device visible in sysfs */ + unsigned power_off:1; /* Device supports runtime power off */ DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */ struct list_head event_list; /* asserted events */ -- 1.7.2.5