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path: root/drivers/scsi/scsi_sysfs.c
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Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
-rw-r--r--drivers/scsi/scsi_sysfs.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 5f85f8e831f3..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>
@@ -802,8 +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);
@@ -812,6 +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;
}
@@ -841,7 +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");