> > For the genernal UFS SCSI devices, block layer RPM is enabled for them > when they are probed by their driver. However block layer RPM is not > enabled for UFS well-known SCSI devices. > > As UFS SCSI devices have their corresponding BSG char devices, accessing > these BSG char devices may result in sending requests to the SCSI devices > through their request queues. If BSG IOCTL sends a request to a well-known > SCSI device when hba is not runtime active, as block layer RPM is not > eanbled for the well-known SCSI device, hba, which is at the top of its > parent chain, shall not be resumed, then unexpected error would happen. While at it, can you fix the ufs-bsg as well? Add this call to ufs_bsg_probe() and revert commit 74e5e468b664 (scsi: ufs-bsg: Wake the device before sending raw upiu commands) ? Thanks, Avri
