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authorLukas Wunner <lukas@wunner.de>2016-09-06 06:20:46 +0200
committerBjorn Helgaas <bhelgaas@google.com>2016-09-13 16:00:18 -0500
commit035ee288ae7ade4152f1c3cf23a587b04fdc526c (patch)
tree2d628d87296e9c18a1e38b9c5575777e2f6c0da6 /drivers/pci
parent6af7e4f77259ee946103387372cb159f2e99a6d4 (diff)
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>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/remove.c3
1 files changed, 1 insertions, 2 deletions
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);
}