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[v9,16/26] PCI: hotplug: Configure MPS after manual bus rescan

Message ID 20201218174011.340514-17-s.miroshnichenko@yadro.com
State New
Headers show
Series PCI: Allow BAR movement during boot and hotplug | expand

Commit Message

Sergei Miroshnichenko Dec. 18, 2020, 5:40 p.m. UTC
Assure that MPS settings are set up for bridges which are discovered during
manually triggered rescan via sysfs. This sequence of bridge init (using
pci_rescan_bus()) later will be used for pciehp hot-add events when BAR
movement is enabled.

Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@yadro.com>
 drivers/pci/probe.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 964dfa71af22..b8873ee82a4b 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -3578,7 +3578,7 @@  static void pci_reassign_root_bus_resources(struct pci_bus *root)
 unsigned int pci_rescan_bus(struct pci_bus *bus)
 	unsigned int max;
-	struct pci_bus *root = bus;
+	struct pci_bus *root = bus, *child;
 	while (!pci_is_root_bus(root))
 		root = root->parent;
@@ -3599,6 +3599,9 @@  unsigned int pci_rescan_bus(struct pci_bus *bus)
+	list_for_each_entry(child, &root->children, node)
+		pcie_bus_configure_settings(child);
 	return max;