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[v4,0/2] ufs: introduce skipping manual flush for wb

Message ID cover.1599285983.git.kwmad.kim@samsung.com
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Series ufs: introduce skipping manual flush for wb | expand

Message

Kiwoong Kim Sept. 5, 2020, 6:06 a.m. UTC 
v3 -> v4: migrate these to 5.10
v2 -> v3: modify some commit messages
v1 -> v2: enable the quirk in exynos

We have two knobs to flush for write booster, i.e.
fWriteBoosterBufferFlushDuringHibernate and fWriteBoosterBufferFlushEn.
However, many product makers uses only fWriteBoosterBufferFlushDuringHibernate,
because this can reportedly cover most scenarios and
there have been some reports that flush by fWriteBoosterBufferFlushEn
could lead to raise power consumption thanks to unexpected internal
operations. So we need a way to enable or disable fWriteBoosterEn
operations. For those case, this quirk will allow to avoid manual flush

Kiwoong Kim (2):
  ufs: introduce skipping manual flush for wb
  ufs: exynos: enable UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

 drivers/scsi/ufs/ufs-exynos.c | 3 ++-
 drivers/scsi/ufs/ufshcd.c     | 3 +++
 drivers/scsi/ufs/ufshcd.h     | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)