From: Lukas Wunner Date: Tue, 6 Sep 2016 04:20:46 +0000 (+0200) Subject: PCI: Fix bridge_d3 update on device removal X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=035ee288ae7ade4152f1c3cf23a587b04fdc526c;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Bjorn Helgaas Reviewed-by: Mika Westerberg Acked-by: Rafael J. Wysocki --- diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index d1ef7acf6930..f9357e09e9b3 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -40,6 +40,7 @@ static void pci_destroy_dev(struct pci_dev *dev) list_del(&dev->bus_list); up_write(&pci_bus_sem); + pci_bridge_d3_device_removed(dev); pci_free_resources(dev); put_device(&dev->dev); } @@ -96,8 +97,6 @@ static void pci_remove_bus_device(struct pci_dev *dev) dev->subordinate = NULL; } - pci_bridge_d3_device_removed(dev); - pci_destroy_dev(dev); }