Merge "scsi: ufs: Handle runtime PM during hibernation"

int ufshcd_system_freeze(struct ufs_hba *hba)

{

	return ufshcd_system_suspend(hba);

	int ret = 0;

	/*

	 * Run time resume the controller to make sure

	 * the PM work queue threads do not try to resume

	 * the child (scsi host), which leads to errors as

	 * the controller is not yet resumed.

	 */

	pm_runtime_get_sync(hba->dev);

	ret = ufshcd_system_suspend(hba);

	pm_runtime_put_sync(hba->dev);

	/*

	 * Ensure no runtime PM operations take

	 * place in the hibernation and restore sequence

	 * on successful freeze operation.

	 */

	if (!ret)

		pm_runtime_disable(hba->dev);

	return ret;

}

EXPORT_SYMBOL(ufshcd_system_freeze);

int ufshcd_system_restore(struct ufs_hba *hba)

{

	int ret = 0;

	hba->restore = true;

	return ufshcd_system_resume(hba);

	ret = ufshcd_system_resume(hba);

	/*

	 * Now any runtime PM operations can be

	 * allowed on successful restore operation

	 */

	if (!ret)

		pm_runtime_enable(hba->dev);

	return ret;

}

EXPORT_SYMBOL(ufshcd_system_restore);

int ufshcd_system_thaw(struct ufs_hba *hba)

{

	return ufshcd_system_resume(hba);

	int ret = 0;

	ret = ufshcd_system_resume(hba);

	if (!ret)

		pm_runtime_enable(hba->dev);

	return ret;

}

EXPORT_SYMBOL(ufshcd_system_thaw);