When a bridge window is temporarily released during the rescan, its old
size is not relevant anymore - it will be recreated from pbus_size_*(), so
it's start value should be zero.
If such window can't be reassigned, don't apply reset_resource(), so the
next retry may succeed.
Signed-off-by: Sergey Miroshnichenko <s.miroshniche...@yadro.com>
---
drivers/pci/setup-bus.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 6cb8b293c576..7c2c57f77c6f 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -295,7 +295,8 @@ static void assign_requested_resources_sorted(struct
list_head *head,
0 /* don't care */,
0 /* don't care */);
}
- reset_resource(res);
+ if (!pci_movable_bars_enabled())
+ reset_resource(res);
}
}
}
@@ -1579,8 +1580,8 @@ static void pci_bridge_release_resources(struct pci_bus
*bus,
type = old_flags = r->flags & PCI_RES_TYPE_MASK;
pci_info(dev, "resource %d %pR released\n",
PCI_BRIDGE_RESOURCES + idx, r);
- /* Keep the old size */
- r->end = resource_size(r) - 1;
+ /* Don't keep the old size if the bridge will be recalculated */
+ r->end = pci_movable_bars_enabled() ? 0 : (resource_size(r) -
1);
r->start = 0;
r->flags = 0;
--
2.21.0
