With enabled BAR movement, all BARs and bridge windows are released at the
beginning of a reassign procedure, not just part of them. In this case only
one pass is enough, no need for several traverses.
In case of failures the pci_reassign_root_bus_resources() disables BARs for
one of the hot-added devices and retries the single-step assignment.
Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@xxxxxxxxx>
---
drivers/pci/setup-bus.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index a69415348684..640090046ffd 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1826,6 +1826,13 @@ void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus)
int pci_try_num = 1;
enum enable_type enable_local;
+ if (pci_can_move_bars) {
+ __pci_bus_size_bridges(bus, NULL);
+ __pci_bus_assign_resources(bus, NULL, NULL);
+
+ goto dump;
+ }
+
/* Don't realloc if asked to do so */
enable_local = pci_realloc_detect(bus, pci_realloc_enable);
if (pci_realloc_enabled(enable_local)) {
--
2.24.1
