linux-kernel - [PATCH 0/2] mmc: add unstuck function if host is in deadlock state

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Date:   Fri, 11 Oct 2019 15:15:00 +0200
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <srinivas.kandagatla@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH 0/2] mmc: add unstuck function if host is in deadlock state

From: Ludovic Barre <ludovic.barre@...com>

As discussed in this thread: https://patchwork.kernel.org/patch/10786421/
After a request, the host could be in deadlock state, and waiting
for a specific action to unstuck the hardware block before
resending a new command. This series adds mmc_hw_unstuck
callback (structure mmc_host_ops) before resending a new command
(call in mmc_blk_mq_rw_recovery, mmc_wait_for_req_done).

Ludovic Barre (2):
  mmc: add unstuck function if host is in deadlock state
  mmc: mmci: add unstuck feature

 drivers/mmc/core/block.c | 11 +++++++++++
 drivers/mmc/core/core.c  | 35 +++++++++++++++++++++++++++++++++--
 drivers/mmc/host/mmci.c  | 23 +++++++++++++++++++++--
 include/linux/mmc/core.h |  1 +
 include/linux/mmc/host.h |  7 +++++++
 5 files changed, 73 insertions(+), 4 deletions(-)

-- 
2.17.1