Re: Hotplug borked after suspend/resume in Linux-3.3 ?
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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