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From: Adrian Hunter <adrian.hunter@intel.com>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: "James E . J . Bottomley" <jejb@linux.ibm.com>,
Bean Huo <huobean@gmail.com>,
Avri Altman <avri.altman@wdc.com>,
Alim Akhtar <alim.akhtar@samsung.com>,
Can Guo <cang@codeaurora.org>,
Asutosh Das <asutoshd@codeaurora.org>,
Bart Van Assche <bvanassche@acm.org>,
Kiwoong Kim <kwmad.kim@samsung.com>,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
Wei Li <liwei213@huawei.com>, linux-scsi@vger.kernel.org
Subject: [PATCH V6 0/3] scsi: ufs: Let devices remain runtime suspended during
system suspend
Date: Thu, 30 Sep 2021 15:42:21 +0300
Message-Id: <20210930124224.114031-1-adrian.hunter@intel.com>
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| Series |
scsi: ufs: Let devices remain runtime suspended during system suspend
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Hi UFS devices can remain runtime suspended at system suspend time, if the conditions are right. Add support for that, first fixing the impediments. Changes in V6: scsi: ufs: Fix error handler clear ua deadlock Ensure data byte count bits 1:0 are 11b Use ufshcd_compose_dev_cmd() to set up command Changes in V5: scsi: ufs: Fix error handler clear ua deadlock Update commit message Try to abort REQUEST SENSE if it times out Changes in V4: scsi: ufs: Fix error handler clear ua deadlock Do request-sense directly Changes in V3: scsi: ufs: Fix error handler clear ua deadlock Correct commit message. Amend stable tags to add dependent cherry picks Changes in V2: scsi: ufs: Let devices remain runtime suspended during system suspend The ufs-hisi driver uses different RPM and SPM, but it is made explicit by a new parameter to suspend prepare. Adrian Hunter (3): scsi: ufs: Fix error handler clear ua deadlock scsi: ufs: Fix runtime PM dependencies getting broken scsi: ufs: Let devices remain runtime suspended during system suspend drivers/scsi/scsi_pm.c | 16 ++- drivers/scsi/ufs/ufs-hisi.c | 8 +- drivers/scsi/ufs/ufs.h | 3 +- drivers/scsi/ufs/ufshcd.c | 296 ++++++++++++++++++++++++++++++-------------- drivers/scsi/ufs/ufshcd.h | 24 +++- include/scsi/scsi_device.h | 1 + include/trace/events/ufs.h | 5 +- 7 files changed, 251 insertions(+), 102 deletions(-) Regards Adrian