[PATCH v6 18/30] PCI: hotplug: Configure MPS for hot-added bridges during bus rescan
From: Sergey Miroshnichenko <hidden>
Date: 2019-10-24 17:51:03
Also in:
linux-pci
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
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: Sergey Miroshnichenko <redacted> --- drivers/pci/probe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index d0d00cb3e965..94bbdf9b9dc1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c@@ -3414,7 +3414,7 @@ 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;
@@ -3435,6 +3435,9 @@ 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;
--
2.23.0