On Tue, Sep 06, 2016 at 06:20:46AM +0200, Lukas Wunner wrote:
> Starting with v4.8, we allow a PCIe port to runtime suspend to D3hot if
> the port itself and its children satisfy a number of conditions. Once a
> child is removed, we recheck those conditions in case the removed device
> was blocking the port from suspending.
>
> The rechecking needs to happen *after* the device has been removed from
> the bus it resides on. Otherwise when walking the port's subordinate
> bus in pci_bridge_d3_update(), the device being removed would
> erroneously still be taken into account.
>
> However the device is removed from the bus_list in pci_destroy_dev() and
> we currently recheck *before* that. Fix it.
Yes, makes sense.
> Fixes: 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend")
> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
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