From: Aaron Lu <aaron.lu@amd.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>,
Alan Stern <stern@rowland.harvard.edu>
Cc: Jeff Garzik <jgarzik@pobox.com>, Lin Ming <minggr@gmail.com>,
Jeff Wu <jeff.wu@amd.com>,
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 v3 2/7] scsi: pm: use autosuspend if device supports it
Date: Thu, 26 Jul 2012 18:05:24 +0800 [thread overview]
Message-ID: <1343297129-28174-3-git-send-email-aaron.lu@amd.com> (raw)
In-Reply-To: <1343297129-28174-1-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 | 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
next prev parent reply other threads:[~2012-07-26 10:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 10:05 [PATCH v3 0/7] ZPODD patches for scsi tree Aaron Lu
2012-07-26 10:05 ` [PATCH v3 1/7] scsi: sr: check support for device busy class events Aaron Lu
2012-07-26 10:05 ` Aaron Lu [this message]
2012-07-26 10:44 ` [PATCH v3 2/7] scsi: pm: use autosuspend if device supports it Oliver Neukum
2012-07-26 12:43 ` Aaron Lu
2012-07-26 13:01 ` Oliver Neukum
2012-07-26 10:05 ` [PATCH v3 3/7] scsi: sr: support zero power ODD(ZPODD) Aaron Lu
2012-07-26 10:05 ` [PATCH v3 4/7] scsi: sr: block events when runtime suspended Aaron Lu
2012-07-26 10:05 ` [PATCH v3 5/7] scsi: pm: use runtime resume callback if available Aaron Lu
2012-07-26 10:05 ` [PATCH v3 6/7] scsi: sr: balance sr disk events block depth Aaron Lu
2012-07-26 10:54 ` Sergei Shtylyov
2012-07-26 12:47 ` Aaron Lu
2012-07-26 10:05 ` [PATCH v3 7/7] block: genhd: add an interface to set disk's poll interval Aaron Lu
2012-07-26 13:43 ` [PATCH v3 0/7] ZPODD patches for scsi tree Jeff Garzik
2012-07-26 14:41 ` Aaron Lu
2012-07-26 18:04 ` Jeff Garzik
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