Re: [PATCH v2 2/2] scsi: sd: Rework asynchronous resume support

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Hi, I have a T460 hanging on resume from suspend to ram in 6.0-rc1 that
I bisected to this commit.

> Unfortunately the above does not learn us anything new. The code 
> modified by commit 88f1669019bd ("scsi: sd: Rework asynchronous resume 
> support") is only called if sdev->manage_start_stop != 1. Only the SATA 
> code, the Firewire code and the manage_start_stop sysfs attribute store 
> method set that member variable:
> 
> $ git grep -nH 'manage_start_stop = '
> drivers/ata/libata-scsi.c:1083:		sdev->manage_start_stop = 1;
> drivers/firewire/sbp2.c:1521:		sdev->manage_start_stop = 1;
> drivers/scsi/sd.c:240:	sdp->manage_start_stop = v;
> 
> Would it be possible to share the output of the command below? That 
> should reveal which ATA driver is active on the test setup.
> 
> find /sys -name proc_name | xargs grep -aH .

In my case it's
/sys/devices/pci0000:00/0000:00:17.0/ata1/host0/scsi_host/host0/proc_name:ahci
/sys/devices/pci0000:00/0000:00:17.0/ata2/host1/scsi_host/host1/proc_name:ahci

Some more details from dmesg

[    0.849373] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[    0.852849] ata2.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[    0.854671] ata2.00: supports DRM functions and may not be fully accessible
[    0.856181] ata2.00: ATA-9: SAMSUNG MZ7LN512HMJP-000L7, MAV01L6Q, max UDMA/133
[    0.858115] ata2.00: 1000215216 sectors, multi 1: LBA48 NCQ (depth 32), AA
[    0.861584] ata2.00: Features: Trust Dev-Sleep NCQ-sndrcv
[    0.863749] ata2.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[    0.865481] ata2.00: supports DRM functions and may not be fully accessible
[    0.870043] ata2.00: configured for UDMA/133
[    0.871871] scsi 1:0:0:0: Direct-Access     ATA      SAMSUNG MZ7LN512 1L6Q PQ: 0 ANSI: 5

Please Cc me on further questions/steps to try/patches to test.

#regzbot introduced: 88f1669019bd62b3
#regzbot monitor: https://lore.kernel.org/all/20220816172638.538734-1-bvanassche@xxxxxxx/

> Thanks,
> 
> Bart.




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