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[v7,19/26] PCI: hotplug: Configure MPS for hot-added bridges during bus rescan

Message ID 20200129152937.311162-20-s.miroshnichenko@yadro.com
State New
Headers show
Series PCI: Allow BAR movement during boot and hotplug | expand

Commit Message

Sergei Miroshnichenko Jan. 29, 2020, 3:29 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()) will be used for pciehp hot-add events when BARs are
movable.

Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@yadro.com>
---
 drivers/pci/probe.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b810d28ebf96..5f809ddd72b4 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -3440,7 +3440,7 @@  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;
@@ -3461,6 +3461,9 @@  unsigned int pci_rescan_bus(struct pci_bus *bus)
 		pci_assign_unassigned_bus_resources(bus);
 	}
 
+	list_for_each_entry(child, &root->children, node)
+		pcie_bus_configure_settings(child);
+
 	pci_bus_add_devices(bus);
 
 	return max;