On Tue, Oct 23, 2012 at 6:10 AM, Tang Chen <tangchen@xxxxxxxxxxxxxx> wrote: > As the comments in __acpi_os_execute() said: > > We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq > because the hotplug code may call driver .remove() functions, > which invoke flush_scheduled_work/acpi_os_wait_events_complete > to flush these workqueues. > > we should keep the hotplug code in kacpi_hotplug_wq. > > But we have the following call series in kernel now: > acpi_ev_queue_notify_request() > |--> acpi_os_execute() > |--> __acpi_os_execute(type, function, context, 0) > > The last parameter 0 makes the container_notify_cb() executed in > kacpi_notify_wq or kacpid_wq. So, we need to put the real hotplug code > into kacpi_hotplug_wq. I had other patches that merge acpi_hp_work in acpiphp and pci_root_hp. I just put them in to for-pci-split-pci-root-hp-2. can you check them to see if you can use it? Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
