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05 April 2024, 19:05:47 UTC
Revision 035ee288ae7ade4152f1c3cf23a587b04fdc526c authored by Lukas Wunner on 06 September 2016, 04:20:46 UTC, committed by Bjorn Helgaas on 13 September 2016, 21:00:18 UTC 
PCI: Fix bridge_d3 update on device removal
 
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.

Fixes: 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <mika.westerberg@linux.intel.com>
1 parent 6af7e4f
History
Tip revision: 035ee288ae7ade4152f1c3cf23a587b04fdc526c authored by Lukas Wunner on 06 September 2016, 04:20:46 UTC
PCI: Fix bridge_d3 update on device removal
Tip revision: 035ee28
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