On Mon, Jun 20, 2016 at 6:22 PM, Martin K. Petersen <[email protected]> wrote: >>>>>> "Tejun" == Tejun Heo <[email protected]> writes: > >>> In fact,we don't need libata to deal with hotplug in sas environment. >>> So we can't run ata hotplug task when ata port is sas host. > > Tejun> Martin, can you please confirm whether the above is true. If so, > Tejun> I'll route the patch through libata w/ stable cc'd. > > Not exactly a libsas expert. James? Dan?
While it is true that libsas itself handles adding / removing devices we have historically avoided this conflict because ATA_PFLAG_SCSI_HOTPLUG is never set for libsas ata_ports. So the bug / behavior change is that ATA_PFLAG_SCSI_HOTPLUG gets set in the first place. Ignoring it is a band-aid / not the real fix afaics.
