From: Can Guo <cang@codeaurora.org>
To: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
hongwus@codeaurora.org, rnayak@codeaurora.org,
linux-scsi@vger.kernel.org, kernel-team@android.com,
saravanak@google.com, salyzyn@google.com, cang@codeaurora.org
Subject: [PATCH V5 0/3] Minor fixes to UFS error handling
Date: Wed, 2 Dec 2020 00:24:31 -0800 [thread overview]
Message-ID: <1606897475-16907-1-git-send-email-cang@codeaurora.org> (raw)
This series mainly fixes below two things which come along with UFS error
handling in some corner cases.
[1] Concurrency problems btw err_handler and paths like system suspend/resume/shutdown and async scan.
[2] Race condition btw UFS error recovery and task abort which happens to W-LU during suspend/resume/shutdown.
The 1st change is tested with error/fault injections to power mode change
operations during system PM operations and async scan. The 2nd change is
tested by mimicing SSU cmd timeout during suspend/resume/shutdown. The 3rd
one is just a minor change to a check condition in IRQ handler such that
the driver can dump host regs when AH8 error happens.
Change since v4:
- Fixed a typo found by Stanley.
Change since v3:
- Slightly updated some commit msg lines, no code changes.
Change since v2:
- Added one more minor change into this series.
Change since v1:
- Removed Change-Id from commit msg
Can Guo (3):
scsi: ufs: Serialize eh_work with system PM events and async scan
scsi: ufs: Fix a race condition between ufshcd_abort and eh_work
scsi: ufs: Print host regs in IRQ handler when AH8 error happens
drivers/scsi/ufs/ufshcd.c | 122 ++++++++++++++++++++++++++++++++--------------
drivers/scsi/ufs/ufshcd.h | 3 ++
2 files changed, 88 insertions(+), 37 deletions(-)
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
next reply other threads:[~2020-12-02 8:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-02 8:24 Can Guo [this message]
2020-12-02 8:24 ` [PATCH V5 1/3] scsi: ufs: Serialize eh_work with system PM events and async scan Can Guo
2020-12-02 8:34 ` Stanley Chu
2020-12-02 8:43 ` nguyenb
2020-12-02 8:24 ` [PATCH V5 2/3] scsi: ufs: Fix a race condition between ufshcd_abort and eh_work Can Guo
2020-12-02 8:48 ` Stanley Chu
2020-12-02 9:10 ` Can Guo
2020-12-02 8:24 ` [PATCH V5 3/3] scsi: ufs: Print host regs in IRQ handler when AH8 error happens Can Guo
2020-12-02 9:00 ` Stanley Chu
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