Re: [linux-pm] 2.6.37-rc5, pata_atiixp, DVD-ROM: kernel log flooded with "rpm_resume flags 0x4", "rpm_resume returns 1"

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On Saturday, December 11, 2010, Stefan Richter wrote:
> Hi,
> 
> I just booted from 2.6.36 (without PM debugging configured) into
> 2.6.37-rc5 (with PM debugging enabled).  There is endless log spam like
> this:

I guess you have either CONFIG_PM_VERBOSE set or CONFIG_PM_DEBUG unset.

Which is the case?

Rafael


> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:31 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:33 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:35 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume returns 1
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume flags 0x4
> Dec 11 17:11:37 stein kernel: scsi host6: rpm_resume returns 1
> 
> Why is rpm_resume performed 6 times every two seconds?
> 
> host6 is pata_atiixp with an:
> 
> 00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
> (prog-if 8a [Master SecP PriP])
> 
> # grep . /sys/class/scsi_host/host6/power/*
> /sys/class/scsi_host/host6/power/async:enabled
> grep: /sys/class/scsi_host/host6/power/autosuspend_delay_ms: Input/output error
> /sys/class/scsi_host/host6/power/control:auto
> /sys/class/scsi_host/host6/power/runtime_active_kids:0
> /sys/class/scsi_host/host6/power/runtime_active_time:0
> /sys/class/scsi_host/host6/power/runtime_enabled:disabled
> /sys/class/scsi_host/host6/power/runtime_status:unsupported
> /sys/class/scsi_host/host6/power/runtime_suspended_time:0
> /sys/class/scsi_host/host6/power/runtime_usage:0
> 
> Attached to it is one device:
> 
> Host: scsi6 Channel: 00 Id: 00 Lun: 00
>   Vendor: PLEXTOR  Model: DVD-ROM PX-130A  Rev: 1.01
>   Type:   CD-ROM                           ANSI  SCSI revision: 05
> 
> # grep . /sys/class/scsi_host/host6/device/target6\:0\:0/6\:0\:0\:0/power/*
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/async:enabled
> grep: /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/autosuspend_delay_ms: Input/output error
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/control:on
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_active_kids:0
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_active_time:2689146
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_enabled:forbidden
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_status:active
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_suspended_time:0
> /sys/class/scsi_host/host6/device/target6:0:0/6:0:0:0/power/runtime_usage:2
> 

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