On 9/19/20 5:45 AM, Bart Van Assche wrote:
On 2020-09-05 18:22, Bart Van Assche wrote:
The SCSI runtime suspend and domain validation mechanisms both use
scsi_device_quiesce(). scsi_device_quiesce() restricts blk_queue_enter() to
BLK_MQ_REQ_PREEMPT requests. There is a conflict between the requirements
of runtime suspend and SCSI domain validation: no requests must be sent to
runtime suspended devices that are in the state RPM_SUSPENDED while
BLK_MQ_REQ_PREEMPT requests must be processed during SCSI domain
validation. This conflict is resolved by reworking the SCSI domain
validation implementation.
Hybernation and runtime suspend have been retested but SCSI domain
validation not yet.
Hi Martin and James,
Please advise how to proceed with this patch series. This patch series
includes an important fix for runtime power management. Unfortunately
the only way to fix runtime powermanagement is by reworking SPI DV and
I don't have access to a setup on which I can test the SPI DV changes.
I'll check if I can resurrect my setup.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
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