From: Lin Ming <ming.m.lin@intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-pm@vger.kernel.org, Alan Stern <stern@rowland.harvard.edu>,
Jeff Garzik <jgarzik@pobox.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
James Bottomley <JBottomley@parallels.com>,
Tejun Heo <tj@kernel.org>, Huang Ying <ying.huang@intel.com>,
Zhang Rui <rui.zhang@intel.com>
Subject: [PATCH v3 3/6] [SCSI] runtime resume device before system suspend
Date: Wed, 23 Nov 2011 15:01:23 +0800 [thread overview]
Message-ID: <1322031686-28233-4-git-send-email-ming.m.lin@intel.com> (raw)
In-Reply-To: <1322031686-28233-1-git-send-email-ming.m.lin@intel.com>
From: Alan Stern <stern@rowland.harvard.edu>
scsi device runtime PM is using PMSG_SUSPEND. System PM may use other state
that may not be compatiable with PMSG_SUSPEND.
So we need to runtime resume the device before system suspend.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
---
Alan,
Could you add your Signed-off-by?
Free free to change the commit logs.
drivers/scsi/scsi_pm.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index d329f8b..549ea72 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -49,8 +49,10 @@ static int scsi_bus_suspend_common(struct device *dev, pm_message_t msg)
{
int err = 0;
- if (scsi_is_sdev_device(dev))
+ if (scsi_is_sdev_device(dev)) {
+ pm_runtime_resume(dev);
err = scsi_dev_type_suspend(dev, msg);
+ }
return err;
}
--
1.7.2.5
next prev parent reply other threads:[~2011-11-23 7:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-23 7:01 [PATCH v3 0/6] ata port runtime power management support Lin Ming
2011-11-23 7:01 ` [PATCH v3 1/6] ata: make ata port as parent device of scsi host Lin Ming
2011-11-23 7:01 ` [PATCH v3 2/6] scsi: add flag to skip the runtime PM calls on the host Lin Ming
2011-11-23 7:01 ` Lin Ming [this message]
2011-11-23 17:02 ` [PATCH v3 3/6] [SCSI] runtime resume device before system suspend Alan Stern
2011-11-24 12:21 ` Lin Ming
2011-11-24 16:36 ` Alan Stern
2011-11-24 19:57 ` Tejun Heo
2011-11-24 22:54 ` Alan Stern
2011-11-24 23:01 ` Tejun Heo
2011-11-25 0:17 ` Alan Stern
2011-11-25 13:50 ` Lin Ming
2011-11-25 15:19 ` Alan Stern
2011-11-23 7:01 ` [PATCH v3 4/6] [SCSI] sd: check runtime status in sd_shutdown Lin Ming
2011-11-23 7:01 ` [PATCH v3 5/6] ata: add ata port system PM callbacks Lin Ming
2011-11-23 7:01 ` [PATCH v3 6/6] ata: add ata port runtime " Lin Ming
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