rk fb: from rk3368 fb only need to reserved 1 framebuffer

[firefly-linux-kernel-4.4.55.git] / drivers / scsi / scsi_pm.c

diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index 8f6b12cbd224801e2828571beb6938808d87b26c..4c5aabe21755cb82450876666145f1f2add7ad1f 100644 (file)
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -144,33 +144,83 @@ 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 *))
+{
+       int err;
+
+       err = blk_pre_runtime_suspend(sdev->request_queue);
+       if (err)
+               return err;
+       if (cb)
+               err = cb(&sdev->sdev_gendev);
+       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;
-       const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 
        dev_dbg(dev, "scsi_runtime_suspend\n");
-       if (scsi_is_sdev_device(dev)) {
-               err = scsi_dev_type_suspend(dev,
-                               pm ? pm->runtime_suspend : NULL);
-               if (err == -EAGAIN)
-                       pm_schedule_suspend(dev, jiffies_to_msecs(
-                               round_jiffies_up_relative(HZ/10)));
-       }
+       if (scsi_is_sdev_device(dev))
+               err = sdev_runtime_suspend(dev);
 
        /* Insert hooks here for targets, hosts, and transport classes */
 
        return err;
 }
 
-static int scsi_runtime_resume(struct device *dev)
+static int sdev_blk_runtime_resume(struct scsi_device *sdev,
+                                       int (*cb)(struct device *))
 {
        int err = 0;
+
+       blk_pre_runtime_resume(sdev->request_queue);
+       if (cb)
+               err = cb(&sdev->sdev_gendev);
+       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;
 
        dev_dbg(dev, "scsi_runtime_resume\n");
        if (scsi_is_sdev_device(dev))
-               err = scsi_dev_type_resume(dev, pm ? pm->runtime_resume : NULL);
+               err = sdev_runtime_resume(dev);
 
        /* Insert hooks here for targets, hosts, and transport classes */
 
@@ -179,17 +229,20 @@ static int scsi_runtime_resume(struct device *dev)
 
 static int scsi_runtime_idle(struct device *dev)
 {
-       int err;
-
        dev_dbg(dev, "scsi_runtime_idle\n");
 
        /* Insert hooks here for targets, hosts, and transport classes */
 
-       if (scsi_is_sdev_device(dev))
-               err = pm_schedule_suspend(dev, 100);
-       else
-               err = pm_runtime_suspend(dev);
-       return err;
+       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;
+               }
+       }
+       return 0;
 }
 
 int scsi_autopm_get_device(struct scsi_device *sdev)