From: Aaron Lu <aaron.lu@amd.com>
To: Jeff Garzik <jgarzik@pobox.com>,
Alan Stern <stern@rowland.harvard.edu>,
Lin Ming <minggr@gmail.com>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
Jeff Wu <jeff.wu@amd.com>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org,
Aaron Lu <aaron.lwe@gmail.com>, Aaron Lu <aaron.lu@amd.com>
Subject: [PATCH v2 2/7] scsi: pm: use autosuspend if device supports it
Date: Tue, 24 Jul 2012 17:37:40 +0800 [thread overview]
Message-ID: <1343122665-18711-3-git-send-email-aaron.lu@amd.com> (raw)
In-Reply-To: <1343122665-18711-1-git-send-email-aaron.lu@amd.com>
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 <aaron.lu@amd.com>
---
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
next prev parent reply other threads:[~2012-07-24 9:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-24 9:37 [PATCH v2 0/7] Fix for ZPODD Aaron Lu
2012-07-24 9:37 ` [PATCH v2 1/7] scsi: sr: fix for sr suspend and resume Aaron Lu
2012-07-24 9:37 ` Aaron Lu [this message]
2012-07-24 9:37 ` [PATCH v2 3/7] scsi: sr: use scsi layer autopm in sr driver Aaron Lu
2012-07-24 9:37 ` [PATCH v2 4/7] scsi: sr: runtime pm when ODD is open/closed Aaron Lu
2012-07-24 9:37 ` [PATCH v2 5/7] scsi: sr: block events when runtime suspended Aaron Lu
2012-07-24 9:37 ` [PATCH v2 6/7] scsi: pm: use runtime resume callback if available Aaron Lu
2012-07-24 9:37 ` [PATCH v2 7/7] block: genhd: add an interface to set disk's poll interval Aaron Lu
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