From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: [PATCH v3 2/7] scsi: pm: use autosuspend if device supports it Date: Thu, 26 Jul 2012 18:05:24 +0800 Message-ID: <1343297129-28174-3-git-send-email-aaron.lu@amd.com> References: <1343297129-28174-1-git-send-email-aaron.lu@amd.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from ch1ehsobe006.messaging.microsoft.com ([216.32.181.186]:12404 "EHLO ch1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751720Ab2GZKGS (ORCPT ); Thu, 26 Jul 2012 06:06:18 -0400 In-Reply-To: <1343297129-28174-1-git-send-email-aaron.lu@amd.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: James Bottomley , Alan Stern Cc: Jeff Garzik , Lin Ming , Jeff Wu , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Aaron Lu , Aaron Lu If the device is using autosuspend, when scsi_autopm_put_device is called for it, use autosuspend runtime pm calls instead of the sync call. Signed-off-by: Aaron Lu --- drivers/scsi/scsi_pm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c index dc0ad85..7c93723 100644 --- a/drivers/scsi/scsi_pm.c +++ b/drivers/scsi/scsi_pm.c @@ -197,7 +197,13 @@ EXPORT_SYMBOL_GPL(scsi_autopm_get_device); void scsi_autopm_put_device(struct scsi_device *sdev) { - pm_runtime_put_sync(&sdev->sdev_gendev); + if (sdev->sdev_gendev.power.use_autosuspend) { + pm_runtime_mark_last_busy(&sdev->sdev_gendev); + pm_runtime_put_autosuspend(&sdev->sdev_gendev); + } else { + pm_runtime_put_sync(&sdev->sdev_gendev); + } + } EXPORT_SYMBOL_GPL(scsi_autopm_put_device); -- 1.7.11.3