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Can Guo authored
Block layer RPM is enabled for the genernal UFS SCSI devices 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 a BSG char device via IOCTL may send requests to its corresponding SCSI device through its request queue. If BSG IOCTL sends a request to a well-known SCSI device when HBA is not runtime active, due to block layer RPM not being enabled for the well-known SCSI devices, the HBA, which is at the top of a SCSI device's parent chain, will not be resumed. This change enables block layer RPM for the well-known SCSI devices so that block layer can handle RPM for the well-known SCSI devices just like for the general SCSI devices. Reviewed-by:
Avri Altman <avri.altman@wdc.com> Reviewed-by:
Stanley Chu <stanley.chu@mediatek.com> Signed-off-by:
Can Guo <cang@codeaurora.org> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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