From: Sujit Reddy Thumma <sthumma@codeaurora.org>
To: Vinayak Holikatti <vinholikatti@gmail.com>,
Santosh Y <santoshsy@gmail.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>,
linux-scsi@vger.kernel.org,
Sujit Reddy Thumma <sthumma@codeaurora.org>,
linux-arm-msm@vger.kernel.org
Subject: [PATCH V6 0/4] scsi: ufs: Improve UFS error handling
Date: Wed, 14 Aug 2013 18:43:19 +0530 [thread overview]
Message-ID: <1376486003-19925-1-git-send-email-sthumma@codeaurora.org> (raw)
In-Reply-To: <n>
The first patch fixes many issues with current task management handling
in UFSHCD driver. Others improve error handling in various scenarios.
These patches are rebased on:
[PATCH 9/9] drivers/scsi/ufs: don't check resource with devm_ioremap_resource
Changes from v5:
- correct typo in [PATCH V5 1/4] scsi: ufs: Fix broken task ...
- correct poll wait in [PATCH V5 2/4] scsi: ufs: Fix hardware ...
- Included Tested-by and Reviewed-by ack's.
Changes from v4:
- Addressed comments from Seungwon Jeon on V3
- Updated with proper locking while ufshcd state changes
- Retained LUN reset instead of device reset with DME_END_POINT_RESET
- Removed error handling decisions dependent on OCS value
- Simplified fatal error handling to abort the requests first
and then carry out reset.
Changes from v3:
- Rebased.
Changes from v2:
- [PATCH V3 1/4]: Make the task management command task tag unique
across SCSI/NOP/QUERY request tags.
- [PATCH V3 3/4]: While handling device/host reset, wait for
pending fatal handler to return if running.
Changes from v1:
- [PATCH V2 1/4]: Fix a race condition because of overloading
outstanding_tasks variable to lock the slots. A new variable
tm_slots_in_use will track which slots are in use by the driver.
- [PATCH V2 2/4]: Commit text update to clarify the hardware race
with more details.
- [PATCH V2 3/4]: Minor cleanup and rebase
- [PATCH V2 4/4]: Fix a bug - sleeping in atomic context
Sujit Reddy Thumma (4):
scsi: ufs: Fix broken task management command implementation
scsi: ufs: Fix hardware race conditions while aborting a command
scsi: ufs: Fix device and host reset methods
scsi: ufs: Improve UFS fatal error handling
drivers/scsi/ufs/ufshcd.c | 684 ++++++++++++++++++++++++++++++++-------------
drivers/scsi/ufs/ufshcd.h | 20 +-
2 files changed, 501 insertions(+), 203 deletions(-)
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation.
next reply other threads:[~2013-08-14 13:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-14 13:13 Sujit Reddy Thumma [this message]
2013-08-14 13:13 ` [PATCH V6 1/4] scsi: ufs: Fix broken task management command implementation Sujit Reddy Thumma
2013-08-14 13:13 ` [PATCH V6 2/4] scsi: ufs: Fix hardware race conditions while aborting a command Sujit Reddy Thumma
2013-08-14 13:13 ` [PATCH V6 3/4] scsi: ufs: Fix device and host reset methods Sujit Reddy Thumma
2013-08-14 13:13 ` [PATCH V6 4/4] scsi: ufs: Improve UFS fatal error handling Sujit Reddy Thumma
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