On Sat, 2020-09-05 at 15:06 +0900, Kiwoong Kim wrote: [...] > + > + /* > + * This quirk needs to disable manual flush for write booster > + */ > + UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 11, You can't have 1 << 11 it's already taken by: 8da76f71fef7 scsi: ufs-pci: Add quirk for broken auto-hibernate for Intel EHL /* * This quirk needs to disable manual flush for write booster */ UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 11, I take it 1 << 12 is OK? James