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Diffstat (limited to 'drivers/scsi/scsi_pm.c')
-rw-r--r--drivers/scsi/scsi_pm.c62
1 files changed, 16 insertions, 46 deletions
diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index af4c050ce6e..001e9ceda4c 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -16,6 +16,8 @@
#include "scsi_priv.h"
+#ifdef CONFIG_PM_SLEEP
+
static int scsi_dev_type_suspend(struct device *dev, int (*cb)(struct device *))
{
int err;
@@ -43,8 +45,6 @@ static int scsi_dev_type_resume(struct device *dev, int (*cb)(struct device *))
return err;
}
-#ifdef CONFIG_PM_SLEEP
-
static int
scsi_bus_suspend_common(struct device *dev, int (*cb)(struct device *))
{
@@ -145,38 +145,22 @@ static int scsi_bus_restore(struct device *dev)
#ifdef CONFIG_PM_RUNTIME
-static int sdev_blk_runtime_suspend(struct scsi_device *sdev,
- int (*cb)(struct device *))
+static int sdev_runtime_suspend(struct device *dev)
{
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ struct scsi_device *sdev = to_scsi_device(dev);
int err;
err = blk_pre_runtime_suspend(sdev->request_queue);
if (err)
return err;
- if (cb)
- err = cb(&sdev->sdev_gendev);
+ if (pm && pm->runtime_suspend)
+ err = pm->runtime_suspend(dev);
blk_post_runtime_suspend(sdev->request_queue, err);
return err;
}
-static int sdev_runtime_suspend(struct device *dev)
-{
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- int (*cb)(struct device *) = pm ? pm->runtime_suspend : NULL;
- struct scsi_device *sdev = to_scsi_device(dev);
- int err;
-
- if (sdev->request_queue->dev)
- return sdev_blk_runtime_suspend(sdev, cb);
-
- err = scsi_dev_type_suspend(dev, cb);
- if (err == -EAGAIN)
- pm_schedule_suspend(dev, jiffies_to_msecs(
- round_jiffies_up_relative(HZ/10)));
- return err;
-}
-
static int scsi_runtime_suspend(struct device *dev)
{
int err = 0;
@@ -190,31 +174,20 @@ static int scsi_runtime_suspend(struct device *dev)
return err;
}
-static int sdev_blk_runtime_resume(struct scsi_device *sdev,
- int (*cb)(struct device *))
+static int sdev_runtime_resume(struct device *dev)
{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int err = 0;
blk_pre_runtime_resume(sdev->request_queue);
- if (cb)
- err = cb(&sdev->sdev_gendev);
+ if (pm && pm->runtime_resume)
+ err = pm->runtime_resume(dev);
blk_post_runtime_resume(sdev->request_queue, err);
return err;
}
-static int sdev_runtime_resume(struct device *dev)
-{
- struct scsi_device *sdev = to_scsi_device(dev);
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- int (*cb)(struct device *) = pm ? pm->runtime_resume : NULL;
-
- if (sdev->request_queue->dev)
- return sdev_blk_runtime_resume(sdev, cb);
- else
- return scsi_dev_type_resume(dev, cb);
-}
-
static int scsi_runtime_resume(struct device *dev)
{
int err = 0;
@@ -235,14 +208,11 @@ static int scsi_runtime_idle(struct device *dev)
/* Insert hooks here for targets, hosts, and transport classes */
if (scsi_is_sdev_device(dev)) {
- struct scsi_device *sdev = to_scsi_device(dev);
-
- if (sdev->request_queue->dev) {
- pm_runtime_mark_last_busy(dev);
- pm_runtime_autosuspend(dev);
- return -EBUSY;
- }
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_autosuspend(dev);
+ return -EBUSY;
}
+
return 0;
}