From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: [PATCH v2 2/7] scsi: pm: use autosuspend if device supports it Date: Tue, 24 Jul 2012 17:37:40 +0800 Message-ID: <1343122665-18711-3-git-send-email-aaron.lu@amd.com> References: <1343122665-18711-1-git-send-email-aaron.lu@amd.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1343122665-18711-1-git-send-email-aaron.lu@amd.com> Sender: linux-kernel-owner@vger.kernel.org To: Jeff Garzik , Alan Stern , Lin Ming , James Bottomley , Jeff Wu Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Aaron Lu , Aaron Lu List-Id: linux-ide@vger.kernel.org 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 | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c index d4201de..a002fbf 100644 --- a/drivers/scsi/scsi_pm.c +++ b/drivers/scsi/scsi_pm.c @@ -196,7 +196,12 @@ 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