From: Can Guo <cang@codeaurora.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
linux-arm-msm@vger.kernel.org, stern@rowland.harvard.edu
Subject: Re: [RFC PATCH v1 0/2] Fix deadlock in ufs
Date: Thu, 28 Jan 2021 10:47:36 +0800 [thread overview]
Message-ID: <49c894a55b56233814252bc59c24f7b4@codeaurora.org> (raw)
In-Reply-To: <YBHAyYRzlvqvB+N+@builder.lan>
On 2021-01-28 03:36, Bjorn Andersson wrote:
> On Wed 27 Jan 10:16 CST 2021, Asutosh Das wrote:
>
>> On Wed, Jan 27 2021 at 07:25 -0800, Bjorn Andersson wrote:
>> > On Tue 26 Jan 20:00 PST 2021, Asutosh Das wrote:
>> >
>> > > This patchset attempts to fix a deadlock in ufs.
>> > > This deadlock occurs because the ufs host driver tries to resume
>> > > its child (wlun scsi device) to send SSU to it during its suspend.
>> > >
>> >
>> > I've been trying to bisect a regression currently seen on all Qualcomm
>> > boards I've tried running next-20210125 on, but have yet to figure out
>> > the actual culprit. I was hoping this might be related, but no.
>> >
>> > The following is the UFS related logs from a SDM845 board:
>> >
>> > [ 4.556147] ufshcd-qcom 1d84000.ufshc: Adding to iommu group 10
>> > [ 14.823635] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: Unable to find vdd-hba-supply regulator, assuming enabled
>> > [ 14.834483] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: Unable to find vccq-supply regulator, assuming enabled
>> > [ 14.845022] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: Unable to find vccq2-supply regulator, assuming enabled
>> > [ 14.859278] scsi host0: ufshcd
>> > [ 14.894076] ufshcd-qcom 1d84000.ufshc: ufshcd_print_pwr_info:[RX, TX]: gear=[1, 1], lane[1, 1], pwr[SLOWAUTO_MODE, SLOWAUTO_MODE], rate = 0
>> > [ 14.972730] ufshcd-qcom 1d84000.ufshc: ufshcd_find_max_sup_active_icc_level: Regulator capability was not set, actvIccLevel=0
>> > [ 14.988386] scsi 0:0:0:49488: Well-known LUN SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.002508] scsi 0:0:0:49476: Well-known LUN SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.015848] scsi 0:0:0:49456: Well-known LUN SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.031551] scsi 0:0:0:0: Direct-Access SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.046885] scsi 0:0:0:1: Direct-Access SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.047204] sd 0:0:0:0: [sda] 14145536 4096-byte logical blocks: (57.9 GB/54.0 GiB)
>> > [ 15.047274] sd 0:0:0:0: [sda] Write Protect is off
>> > [ 15.047281] sd 0:0:0:0: [sda] Mode Sense: 00 32 00 10
>> > [ 15.047418] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
>> > [ 15.047488] sd 0:0:0:0: [sda] Optimal transfer size 786432 bytes
>> > [ 15.062041] scsi 0:0:0:2: Direct-Access SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.062347] sd 0:0:0:1: [sdb] 1024 4096-byte logical blocks: (4.19 MB/4.00 MiB)
>> > [ 15.062414] sd 0:0:0:1: [sdb] Write Protect is off
>> > [ 15.062418] sd 0:0:0:1: [sdb] Mode Sense: 00 32 00 10
>> > [ 15.062522] sd 0:0:0:1: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
>> > [ 15.062582] sd 0:0:0:1: [sdb] Optimal transfer size 786432 bytes
>> > [ 15.074503] scsi 0:0:0:3: Direct-Access SKhynix H28S7Q302BMR A002 PQ: 0 ANSI: 6
>> > [ 15.075092] sd 0:0:0:2: [sdc] 1024 4096-byte logical blocks: (4.19 MB/4.00 MiB)
>> > [ 15.075161] sd 0:0:0:2: [sdc] Write Protect is off
>> > [ 15.075166] sd 0:0:0:2: [sdc] Mode Sense: 00 32 00 10
>> > [ 15.075292] sd 0:0:0:2: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
>> > [ 15.075358] sd 0:0:0:2: [sdc] Optimal transfer size 786432 bytes
>> > [ 15.093820] ufshcd-qcom 1d84000.ufshc: dme-set: attr-id 0x1583 val 0x0 failed 0 retries
>> > [ 15.199208] ufshcd-qcom 1d84000.ufshc: dme-set: attr-id 0x1568 val 0x0 failed 0 retries
>> > [ 15.400514] ufshcd-qcom 1d84000.ufshc: __ufshcd_issue_tm_cmd: task management cmd 0x80 timed-out
>> > [ 15.409439] ufshcd-qcom 1d84000.ufshc: ufshcd_try_to_abort_task: no response from device. tag = 10, err -110
>> > [ 15.479763] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.546285] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.612688] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.679057] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.685187] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
>> > [ 15.754125] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.820405] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.886519] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.952976] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 15.959119] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
>> > [ 16.027951] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.094499] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.161005] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.276723] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.282756] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
>> > [ 16.360239] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.427425] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.497737] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.566869] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.572939] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
>> > [ 16.642243] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.708590] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.774868] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.841364] ufshcd-qcom 1d84000.ufshc: Controller enable failed
>> > [ 16.847492] ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5
>> > [ 16.855938] ufshcd-qcom 1d84000.ufshc: ufshcd_err_handler: reset and restore failed with err -5
>> > [ 16.936724] sd 0:0:0:2: [sdc] tag#12 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=1s
>> > [ 16.946151] sd 0:0:0:2: [sdc] tag#12 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 16.953950] blk_update_request: I/O error, dev sdc, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 16.963987] Buffer I/O error on dev sdc, logical block 0, async page read
>> > [ 16.971263] sd 0:0:0:1: [sdb] tag#13 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=1s
>> > [ 16.980668] sd 0:0:0:1: [sdb] tag#13 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 16.988457] blk_update_request: I/O error, dev sdb, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 16.998455] Buffer I/O error on dev sdb, logical block 0, async page read
>> > [ 17.005438] sd 0:0:0:0: [sda] tag#15 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=1s
>> > [ 17.014887] sd 0:0:0:0: [sda] tag#15 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 17.022639] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 17.032581] Buffer I/O error on dev sda, logical block 0, async page read
>> > [ 17.060604] sd 0:0:0:2: [sdc] tag#11 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.070024] sd 0:0:0:2: [sdc] tag#11 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 17.077811] blk_update_request: I/O error, dev sdc, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 17.087785] Buffer I/O error on dev sdc, logical block 0, async page read
>> > [ 17.094762] sdc: unable to read partition table
>> > [ 17.121375] sd 0:0:0:0: [sda] tag#13 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.124811] sd 0:0:0:1: [sdb] tag#14 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.130915] sd 0:0:0:0: [sda] tag#13 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 17.138281] sd 0:0:0:2: [sdc] tag#9 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.138351] sd 0:0:0:2: [sdc] tag#9 CDB: opcode=0x28 28 00 00 00 03 f0 00 00 01 00
>> > [ 17.138361] blk_update_request: I/O error, dev sdc, sector 8064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
>> > [ 17.140305] sd 0:0:0:1: [sdb] tag#14 CDB: opcode=0x28 28 00 00 00 00 00 00 00 01 00
>> > [ 17.148070] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 17.157308] blk_update_request: I/O error, dev sdb, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 17.164973] Buffer I/O error on dev sda, logical block 0, async page read
>> > [ 17.175522] Buffer I/O error on dev sdb, logical block 0, async page read
>> > [ 17.183484] sda: unable to read partition table
>> > [ 17.193379] sdb: unable to read partition table
>> > [ 17.245890] sd 0:0:0:0: [sda] tag#16 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.255444] sd 0:0:0:0: [sda] tag#16 CDB: opcode=0x28 28 00 00 d7 d7 f0 00 00 01 00
>> > [ 17.262309] sd 0:0:0:2: [sdc] tag#9 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.263226] blk_update_request: I/O error, dev sda, sector 113164160 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
>> > [ 17.267751] sd 0:0:0:1: [sdb] tag#14 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s
>> > [ 17.267804] sd 0:0:0:1: [sdb] tag#14 CDB: opcode=0x28 28 00 00 00 03 f0 00 00 01 00
>> > [ 17.267820] blk_update_request: I/O error, dev sdb, sector 8064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
>> > [ 17.272473] sd 0:0:0:2: [sdc] tag#9 CDB: opcode=0x28 28 00 00 00 03 f0 00 00 01 00
>> > [ 17.272480] blk_update_request: I/O error, dev sdc, sector 8064 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
>> > [ 17.328934] Buffer I/O error on dev sdc, logical block 1008, async page read
>> > [ 17.336400] Buffer I/O error on dev sdb, logical block 1008, async page read
>> > [ 17.344184] Buffer I/O error on dev sda, logical block 14145520, async page read
>> > [ 17.356908] sd 0:0:0:3: [sdd] Read Capacity(16) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.365890] sd 0:0:0:3: [sdd] Sense not available.
>> > [ 17.504489] sd 0:0:0:1: [sdb] Read Capacity(16) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.513199] sd 0:0:0:1: [sdb] Sense not available.
>> > [ 17.548648] sd 0:0:0:0: [sda] Read Capacity(16) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.548875] sd 0:0:0:2: [sdc] Read Capacity(16) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.557365] sd 0:0:0:0: [sda] Sense not available.
>> > [ 17.570888] sd 0:0:0:2: [sdc] Sense not available.
>> > [ 17.612557] sd 0:0:0:3: [sdd] Read Capacity(10) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.621302] sd 0:0:0:3: [sdd] Sense not available.
>> > [ 17.720470] sd 0:0:0:3: [sdd] 0 512-byte logical blocks: (0 B/0 B)
>> > [ 17.726895] sd 0:0:0:3: [sdd] 0-byte physical blocks
>> > [ 17.756442] sd 0:0:0:1: [sdb] Read Capacity(10) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.765154] sd 0:0:0:1: [sdb] Sense not available.
>> > [ 17.796694] sd 0:0:0:0: [sda] Read Capacity(10) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.805550] sd 0:0:0:0: [sda] Sense not available.
>> > [ 17.812461] sd 0:0:0:2: [sdc] Read Capacity(10) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 17.812479] sd 0:0:0:3: [sdd] Write Protect is off
>> > [ 17.821124] sd 0:0:0:2: [sdc] Sense not available.
>> > [ 17.831183] sd 0:0:0:3: [sdd] Mode Sense: 00 00 00 00
>> > [ 17.916633] sd 0:0:0:3: [sdd] Asking for cache data failed
>> > [ 17.922246] sd 0:0:0:3: [sdd] Assuming drive cache: write through
>> > [ 17.928661] sd 0:0:0:1: [sdb] 0 4096-byte logical blocks: (0 B/0 B)
>> > [ 17.964461] sd 0:0:0:2: [sdc] 0 4096-byte logical blocks: (0 B/0 B)
>> > [ 17.968389] sd 0:0:0:0: [sda] 0 4096-byte logical blocks: (0 B/0 B)
>> > [ 18.052598] sd 0:0:0:2: [sdc] Write Protect is on
>> > [ 18.057654] sd 0:0:0:2: [sdc] Mode Sense: 00 01 1c 88
>> > [ 18.140750] Buffer I/O error on dev sdc, logical block 1008, async page read
>> > [ 18.148120] sdc: detected capacity change from 0 to 8192
>> > [ 18.148436] sdb: detected capacity change from 0 to 8192
>> > [ 18.153573] sd 0:0:0:2: [sdc] Attached SCSI disk
>> > [ 18.161640] sd 0:0:0:1: [sdb] Attached SCSI disk
>> > [ 18.272458] sda: detected capacity change from 0 to 113164288
>> > [ 18.278440] sd 0:0:0:0: [sda] Attached SCSI disk
>> > [ 18.336456] sd 0:0:0:3: [sdd] Read Capacity(16) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 18.345155] sd 0:0:0:3: [sdd] Sense not available.
>> > [ 18.437277] ufshcd-qcom 1d84000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 2 failed, index 4, err = -11
>> > [ 18.588427] sd 0:0:0:3: [sdd] Read Capacity(10) failed: Result: hostbyte=0x07 driverbyte=0x00
>> > [ 18.597131] sd 0:0:0:3: [sdd] Sense not available.
>> > [ 18.984425] sd 0:0:0:3: [sdd] Attached SCSI disk
>> > [ 19.973658] ufshcd-qcom 1d84000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 2 failed, index 4, err = -11
>> > [ 21.508706] ufshcd-qcom 1d84000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 2 failed, index 4, err = -11
>> > [ 21.519204] ufshcd-qcom 1d84000.ufshc: ufshcd_read_desc_param: Failed reading descriptor. desc_id 2, desc_index 4, param_offset 6, ret -11
>> > [ 21.577216] sd 0:0:0:0: Unexpected response from lun 4 while scanning, scan aborted
>> > [ 22.181387] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 23.007510] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 23.076607] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 23.524907] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 24.133026] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 24.421140] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 24.549023] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 25.156985] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 25.253136] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 26.180950] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 26.597019] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 27.204984] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 27.493135] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 27.621022] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 28.228982] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 28.325152] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 29.252956] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 29.669021] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 30.276984] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 30.565140] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 30.693023] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 31.300983] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 31.397134] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 32.324954] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 32.741021] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 33.348985] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 33.637132] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 33.765258] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 34.372980] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 34.469142] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 35.396957] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 35.813018] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 36.420980] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 36.709133] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 36.837021] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 37.444979] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 37.541138] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 38.468955] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 38.885021] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 39.492983] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 39.781134] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 39.909017] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 40.516977] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 40.613135] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 41.540956] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 41.957016] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 42.564987] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 42.853130] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 42.981020] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 43.588980] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 43.685135] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 44.612954] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 45.029014] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 45.636979] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 45.925137] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 46.053022] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 46.660983] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> > [ 46.757132] devfreq 1d84000.ufshc: dvfs failed with (-16) error
>> >
>> > Is this something that you've seen?
>> >
>> > Regards,
>> > Bjorn
>>
>> Hi Bjorn
>> Nope, I've not seen this issue yet.
>> Looks like the commands are timing out, could be clocks/power,
>> perhaps?
>>
>
> I've finally concluded that reverting 4543d9d78227 ("scsi: ufs:
> Refactor
> ufshcd_init/exit_clk_scaling/gating()") fixes the problem and allow at
> least SDM845 to boot again (haven't yet tested the others).
>
> I've not yet figured out why it's causing the regression.
>
Hi Bjorn,
Thanks for pointing it out. I have sent out the fix - my mistake that I
removed two lines by mistake in commit 4543d9d78227. When I tested
commit
4543d9d78227, I found that the two lines were missing, but I forgot to
add the two lines into 4543d9d78227 when I sent it out.
Regards,
Can Guo.
> Regards,
> Bjorn
next prev parent reply other threads:[~2021-01-28 2:48 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 4:00 [RFC PATCH v1 0/2] Fix deadlock in ufs Asutosh Das
2021-01-27 4:00 ` [RFC PATCH v1 1/2] block: bsg: resume scsi device before accessing Asutosh Das
2021-01-27 7:09 ` Avri Altman
2021-01-27 7:59 ` Can Guo
2021-01-27 8:53 ` Can Guo
2021-02-07 2:23 ` Bart Van Assche
2021-01-27 4:00 ` [RFC PATCH v1 2/2] scsi: ufs: Fix deadlock while suspending ufs host Asutosh Das
2021-01-27 15:22 ` [RFC PATCH v1 0/2] Fix deadlock in ufs Bjorn Andersson
2021-01-27 16:16 ` Asutosh Das
2021-01-27 19:36 ` Bjorn Andersson
2021-01-28 2:47 ` Can Guo [this message]
2021-01-28 3:26 ` [RFC PATCH v2 " Asutosh Das
2021-01-28 3:26 ` [RFC PATCH v2 1/2] block: bsg: resume platform device before accessing Asutosh Das
2021-01-28 3:26 ` [RFC PATCH v2 2/2] scsi: ufs: Fix deadlock while suspending ufs host Asutosh Das
2021-01-28 12:21 ` Avri Altman
2021-01-28 16:39 ` Asutosh Das
2021-01-28 9:33 ` [RFC PATCH v2 0/2] Fix deadlock in ufs Avri Altman
2021-01-28 17:19 ` Asutosh Das
2021-02-01 20:11 ` Asutosh Das (asd)
2021-02-01 20:27 ` Bart Van Assche
2021-02-01 21:48 ` Alan Stern
2021-02-02 20:52 ` Asutosh Das
2021-02-02 22:05 ` Alan Stern
2021-02-04 0:13 ` Asutosh Das
2021-02-04 19:48 ` Alan Stern
2021-02-04 21:14 ` Asutosh Das
2021-02-05 7:56 ` Avri Altman
2021-02-05 16:11 ` Asutosh Das
2021-02-06 2:37 ` Asutosh Das
2021-02-06 19:24 ` Avri Altman
2021-02-08 16:24 ` Asutosh Das
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