On Tue, Apr 17, 2012 at 3:02 PM, Mark Lord <kernel@xxxxxxxxxxxx> wrote: > On 12-04-17 04:53 PM, Mark Lord wrote: >> On 12-04-17 04:48 PM, Mark Lord wrote: >>> On 12-04-17 04:38 PM, Mark Lord wrote: >>>> Okay, so why isn't SATA hotplug working in linux-3.3.2 ? >>>> I don't know when it stopped working, but it's a blooming pain in the sysadmin. >>>> >>>> I need to hotplug a SATA drive into an AHCI port, >>>> preferably without having to reboot first. >>>> >>>> Is there a patch available already for this regression? >>> >>> >>> Answering my own question, this patch appears to address the issue. >>> I'll test and report back again shortly: >>> >>> http://patchwork.ozlabs.org/patch/146326/ >>> >>> Odd that it's been sitting in various people's inboxes since 3.3-rc1 >>> and hasn't been pushed out yet. >> >> Ahh.. perhaps because it doesn't fix the problem I'm seeing here. >> >> Oh well, anyone else got a fix for this regression yet? >> Even doing a rescan-scsi-bus doesn't work on the closed down ports. >> >> Basically, any unoccupied AHCI port is dead to the world >> after a simple suspend/resume (RAM) cycle. On one of my machines >> I can hot unplug/replug the ExpressCard adapter to recover, >> but that doesn't work so well for built-in SATA/eSATA ports. > > > Mmm.. on my little Atom ZBOX systems, the patch linked above > "Patchwork [v2] libata: disable runtime pm for hotpluggable port" > _does_ appear to fix the issue. > > Maybe my notebook is suffering from the ExpressCard not being resumed properly, > which would be a PCI issue most likely. > > Anyway, one issue at a time: The "disable runtime pm" patch seems to > be the regression fix I'm looking for here so that I can use SATA hotplug > after a suspend/resume. > > Why isn't this upstream as a regression fix yet? > > Thanks > -- > To unsubscribe from this list: send the line "unsubscribe linux-ide" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html echo on > /sys/devices/pci0000:00/0000:00:1f.2/ata5/power/control echo on > /sys/devices/pci0000:00/0000:00:1f.2/ata5/host4/power/control echo '- - -' > /sys/devices/pci0000:00/0000:00:1f.2/ata5/host4/scsi_host/host4/scan Substituting the appropriate values to poke the right devices -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
