linux-kernel - [PATCH v4 2/7] scsi: pm: add interface to autosuspend scsi device

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1343379650-2867-3-git-send-email-aaron.lu@amd.com>
Date:	Fri, 27 Jul 2012 17:00:45 +0800
From:	Aaron Lu <aaron.lu@....com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Jeff Garzik <jgarzik@...ox.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Sergei Shtylyov <sshtylyov@...sta.com>,
	Oliver Neukum <oneukum@...e.de>
CC:	Jeff Wu <jeff.wu@....com>, Lin Ming <minggr@...il.com>,
	<linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
	<linux-scsi@...r.kernel.org>, <linux-ide@...r.kernel.org>,
	Aaron Lu <aaron.lwe@...il.com>, Aaron Lu <aaron.lu@....com>
Subject: [PATCH v4 2/7] scsi: pm: add interface to autosuspend scsi device

Add a new interface scsi_autopm_put_device_autosuspend to mark
last busy for the device and then put autosuspend the device.

Signed-off-by: Aaron Lu <aaron.lu@....com>
---
 drivers/scsi/scsi_pm.c     | 7 +++++++
 include/scsi/scsi_device.h | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index dc0ad85..83edb93 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -201,6 +201,13 @@ void scsi_autopm_put_device(struct scsi_device *sdev)
 }
 EXPORT_SYMBOL_GPL(scsi_autopm_put_device);
 
+void scsi_autopm_put_device_autosuspend(struct scsi_device *sdev)
+{
+	pm_runtime_mark_last_busy(&sdev->sdev_gendev);
+	pm_runtime_put_autosuspend(&sdev->sdev_gendev);
+}
+EXPORT_SYMBOL_GPL(scsi_autopm_put_device_autosuspend);
+
 void scsi_autopm_get_target(struct scsi_target *starget)
 {
 	pm_runtime_get_sync(&starget->dev);
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 9895f69..3636146 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -395,9 +395,11 @@ extern int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd,
 #ifdef CONFIG_PM_RUNTIME
 extern int scsi_autopm_get_device(struct scsi_device *);
 extern void scsi_autopm_put_device(struct scsi_device *);
+extern void scsi_autopm_put_device_autosuspend(struct scsi_device *);
 #else
 static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; }
 static inline void scsi_autopm_put_device(struct scsi_device *d) {}
+static inline void scsi_autopm_put_device_autosuspend(struct scsi_device *d) {}
 #endif /* CONFIG_PM_RUNTIME */
 
 static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
-- 
1.7.11.3


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/