On Fri, Feb 12, 2021 at 08:54:18PM +0000, Sergei Miroshnichenko wrote: > On Fri, 2021-02-12 at 14:52 +0200, mika.westerberg@xxxxxxxxxxxxxxx > wrote: > > Hi, > > > > On Thu, Feb 11, 2021 at 05:45:20PM +0000, Sergei Miroshnichenko > > wrote: > > > What a pity. Yes, please, I would of course like to take a look why > > > that happened, and compare, what went wrong (before and after the > > > hotplug: lspci -tv, dmesg -t and /proc/iomem with /proc/ioports, if > > > it > > > wouldn't be too much trouble). > > > > I just sent these logs to you in a separate email. Let me know if you > > need more. > > Thanks, from them it's clear that the "full rescan" apprach currently > doesn't involve the pci_bus_distribute_available_resources(), that's > why hot-adding a second nested switch breaks: because of non- > distributed free bus numbers. The first switch seems was hot-added just > fine, with BARs being moved a bit. > > This is to be fixed in v10, along with the > mpt3sas+pci_dev_is_disconnected() moment Lukas had found (thanks > Lukas!), CONFIG_DEBUG_LOCK_ALLOC macro, and a more useful debug > messages. Great, thanks! :)
