On 19.09.20 05:45, 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. > > Thanks, > > Bart. > I only have my setup: SD cardreader connected via USB. I run this series which fixes runtime PM in the block layer for me. Sidenote: I need the following hack for my particular device too: https://lore.kernel.org/linux-scsi/20200824190400.12339-1-martin.kepplinger@xxxxxxx/ I hope someone else can test the rest for us! thanks for working on this, martin
