Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits)
  [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
  [SCSI] zfcp: Introduce experimental support for DIF/DIX
  [SCSI] zfcp: Enable data division support for FCP devices
  [SCSI] zfcp: Prevent access on uninitialized memory.
  [SCSI] zfcp: Post events through FC transport class
  [SCSI] zfcp: Cleanup QDIO attachment and improve processing.
  [SCSI] zfcp: Cleanup function parameters for sbal value.
  [SCSI] zfcp: Use correct width for timer_interval field
  [SCSI] zfcp: Remove SCSI device when removing unit
  [SCSI] zfcp: Use memdup_user and kstrdup
  [SCSI] zfcp: Fix retry after failed "open port" erp action
  [SCSI] zfcp: Fail erp after timeout
  [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback
  [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add
  [SCSI] zfcp: Do not try "forced close" when port is already closed
  [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED
  [SCSI] sd: add support for runtime PM
  [SCSI] implement runtime Power Management
  [SCSI] convert to the new PM framework
  [SCSI] Unify SAM_ and SAM_STAT_ macros
  ...

1 files changed, 19 insertions, 49 deletions

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index c23ab978c3ba..562fb3bce261 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/device.h>
+#include <linux/pm_runtime.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
@@ -376,57 +377,11 @@ static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
-static int scsi_bus_suspend(struct device * dev, pm_message_t state)
-{
-	struct device_driver *drv;
-	struct scsi_device *sdev;
-	int err;
-
-	if (dev->type != &scsi_dev_type)
-		return 0;
-
-	drv = dev->driver;
-	sdev = to_scsi_device(dev);
-
-	err = scsi_device_quiesce(sdev);
-	if (err)
-		return err;
-
-	if (drv && drv->suspend) {
-		err = drv->suspend(dev, state);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static int scsi_bus_resume(struct device * dev)
-{
-	struct device_driver *drv;
-	struct scsi_device *sdev;
-	int err = 0;
-
-	if (dev->type != &scsi_dev_type)
-		return 0;
-
-	drv = dev->driver;
-	sdev = to_scsi_device(dev);
-
-	if (drv && drv->resume)
-		err = drv->resume(dev);
-
-	scsi_device_resume(sdev);
-
-	return err;
-}
-
 struct bus_type scsi_bus_type = {
         .name		= "scsi",
         .match		= scsi_bus_match,
 	.uevent		= scsi_bus_uevent,
-	.suspend	= scsi_bus_suspend,
-	.resume		= scsi_bus_resume,
+	.pm		= &scsi_bus_pm_ops,
 };
 EXPORT_SYMBOL_GPL(scsi_bus_type);
 
@@ -848,8 +803,6 @@ static int scsi_target_add(struct scsi_target *starget)
 	if (starget->state != STARGET_CREATED)
 		return 0;
 
-	device_enable_async_suspend(&starget->dev);
-
 	error = device_add(&starget->dev);
 	if (error) {
 		dev_err(&starget->dev, "target device_add failed, error %d\n", error);
@@ -858,6 +811,10 @@ static int scsi_target_add(struct scsi_target *starget)
 	transport_add_device(&starget->dev);
 	starget->state = STARGET_RUNNING;
 
+	pm_runtime_set_active(&starget->dev);
+	pm_runtime_enable(&starget->dev);
+	device_enable_async_suspend(&starget->dev);
+
 	return 0;
 }
 
@@ -887,7 +844,20 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 		return error;
 
 	transport_configure_device(&starget->dev);
+
 	device_enable_async_suspend(&sdev->sdev_gendev);
+	scsi_autopm_get_target(starget);
+	pm_runtime_set_active(&sdev->sdev_gendev);
+	pm_runtime_forbid(&sdev->sdev_gendev);
+	pm_runtime_enable(&sdev->sdev_gendev);
+	scsi_autopm_put_target(starget);
+
+	/* The following call will keep sdev active indefinitely, until
+	 * its driver does a corresponding scsi_autopm_pm_device().  Only
+	 * drivers supporting autosuspend will do this.
+	 */
+	scsi_autopm_get_device(sdev);
+
 	error = device_add(&sdev->sdev_gendev);
 	if (error) {
 		printk(KERN_INFO "error 1\n");