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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/
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