static int scsi_dev_type_suspend(struct device *dev, pm_message_t msg)
{
struct device_driver *drv;
int err;
err = scsi_device_quiesce(to_scsi_device(dev));
if (err == 0) {
drv = dev->driver;
if (drv && drv->suspend)
err = drv->suspend(dev, msg);
}
dev_dbg(dev, "scsi suspend: %d\n", err);
return err;
}
static int scsi_dev_type_suspend(struct device *dev, int (*cb)(struct device *))
{
int err;
err = scsi_device_quiesce(to_scsi_device(dev));
if (err == 0) {
if (cb) {
err = cb(dev);
if (err)
scsi_device_resume(to_scsi_device(dev));
}
}
dev_dbg(dev, "scsi suspend: %d\n", err);
return err;
}
static int scsi_dev_type_suspend(struct device *dev,
int (*cb)(struct device *, const struct dev_pm_ops *))
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int err;
/* flush pending in-flight resume operations, suspend is synchronous */
async_synchronize_full_domain(&scsi_sd_pm_domain);
err = scsi_device_quiesce(to_scsi_device(dev));
if (err == 0) {
err = cb(dev, pm);
if (err)
scsi_device_resume(to_scsi_device(dev));
}
dev_dbg(dev, "scsi suspend: %d\n", err);
return err;
}