ufshcd_pltfrm_runtime_idle 256 drivers/scsi/ufs/ufshcd-pltfrm.c int ufshcd_pltfrm_runtime_idle(struct device *dev) ufshcd_pltfrm_runtime_idle 49 drivers/scsi/ufs/ufshcd-pltfrm.h #define ufshcd_pltfrm_runtime_idle NULL