linux-kernel - [PATCH v2 0/5] mmc: dw_mmc: Fix the CTO timer patch, plus the DTO timer

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Date:   Thu, 12 Oct 2017 13:11:13 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     jh80.chung@...sung.com, ulf.hansson@...aro.org,
        shawn.lin@...k-chips.com
Cc:     xzy.xu@...k-chips.com, amstan@...omium.org,
        linux-rockchip@...ts.infradead.org, briannorris@...omium.org,
        linux-samsung-soc@...r.kernel.org, kernel@...il.dk,
        Douglas Anderson <dianders@...omium.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/5] mmc: dw_mmc: Fix the CTO timer patch, plus the DTO timer

Recently we landed 03de19212ea3 ("mmc: dw_mmc: introduce timer for
broken command transfer over scheme").  I found a bunch of problems
with that patch, so this series attempts to solve some of them.

This also fixes the DTO timer in some of the same ways even though I
haven't personally seen problems with the DTO timer.

NOTE: this series has only been lighly tested so far.  I can at least
reproduce the need for the CTO timer on one of my devices and so I can
confirm that part still works.  As mentioned in the 3rd patch I also
ran the mmc_test kernel module on this and did manage to see the 3rd
patch doing something useful.

Changes in v2:
- Removed extra "int i"
- Fix the DTO timeout calculation new for v2
- Cleanup the DTO timer new for v2

Douglas Anderson (5):
  mmc: dw_mmc: cancel the CTO timer after a voltage switch
  mmc: dw_mmc: Fix the CTO timeout calculation
  mmc: dw_mmc: Add locking to the CTO timer
  mmc: dw_mmc: Fix the DTO timeout calculation
  mmc: dw_mmc: Cleanup the DTO timer like the CTO one

 drivers/mmc/host/dw_mmc.c | 162 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 146 insertions(+), 16 deletions(-)

-- 
2.15.0.rc0.271.g36b669edcc-goog