Like scsi's async suspend support, allow scsi devices to be shut down
asynchronously to reduce system shutdown time.

Signed-off-by: David Jeffery <[email protected]>
Signed-off-by: Stuart Hayes <[email protected]>
Tested-by: Laurence Oberman <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Pasha Tatashin <[email protected]>
Reviewed-by: John Garry <[email protected]>
---
 drivers/scsi/hosts.c      | 2 ++
 drivers/scsi/scsi_sysfs.c | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index e72055c1ebbb..75592f41ef39 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -272,6 +272,7 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct 
device *dev,
        pm_runtime_set_active(&shost->shost_gendev);
        pm_runtime_enable(&shost->shost_gendev);
        device_enable_async_suspend(&shost->shost_gendev);
+       dev_set_async_shutdown(&shost->shost_gendev);
 
        error = device_add(&shost->shost_gendev);
        if (error)
@@ -282,6 +283,7 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct 
device *dev,
        get_device(shost->shost_gendev.parent);
 
        device_enable_async_suspend(&shost->shost_dev);
+       dev_set_async_shutdown(&shost->shost_dev);
 
        get_device(&shost->shost_gendev);
        error = device_add(&shost->shost_dev);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 9480432f650b..52e1e38dc027 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -1387,6 +1387,7 @@ static int scsi_target_add(struct scsi_target *starget)
        pm_runtime_set_active(&starget->dev);
        pm_runtime_enable(&starget->dev);
        device_enable_async_suspend(&starget->dev);
+       dev_set_async_shutdown(&starget->dev);
 
        return 0;
 }
@@ -1413,6 +1414,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
        transport_configure_device(&starget->dev);
 
        device_enable_async_suspend(&sdev->sdev_gendev);
+       dev_set_async_shutdown(&sdev->sdev_gendev);
        scsi_autopm_get_target(starget);
        pm_runtime_set_active(&sdev->sdev_gendev);
        if (!sdev->rpm_autosuspend)
@@ -1432,6 +1434,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
        }
 
        device_enable_async_suspend(&sdev->sdev_dev);
+       dev_set_async_shutdown(&sdev->sdev_dev);
        error = device_add(&sdev->sdev_dev);
        if (error) {
                sdev_printk(KERN_INFO, sdev,
-- 
2.55.0


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