[PATCH v2 2/2] PCI: xgene: Revert "PCI: xgene: Fix IB window setup"

[Marc Zyngier]

Commit c7a75d07827a ("PCI: xgene: Fix IB window setup") tried to
fix the damages that 6dce5aa59e0b ("PCI: xgene: Use inbound resources
for setup") caused, but actually didn't improve anything for some
plarforms (at least Mustang and m400 are still broken).

Given that 6dce5aa59e0b has been reverted, revert this patch as well,
restoring the PCIe support on XGene to its pre-5.5, working state.

Cc: Rob Herring <robh at kernel.org>
Cc: Toan Le <toan at os.amperecomputing.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
Cc: Krzysztof Wilczyński <kw at linux.com>
Cc: Bjorn Helgaas <bhelgaas at google.com>
Cc: Stéphane Graber <stgraber at ubuntu.com>
Cc: dann frazier <dann.frazier at canonical.com>
Cc: stable at vger.kernel.org
Signed-off-by: Marc Zyngier <maz at kernel.org>
Fixes: c7a75d07827a ("PCI: xgene: Fix IB window setup")
Link: https://lore.kernel.org/r/YjN8pT5e6/8cRohQ@xps13.dannf
---
 drivers/pci/controller/pci-xgene.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index aa41ceaf031f..7c763d820c52 100644
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -465,7 +465,7 @@ static int xgene_pcie_select_ib_reg(u8 *ib_reg_mask, u64 size)
 		return 1;
 	}
 
-	if ((size > SZ_1K) && (size < SZ_4G) && !(*ib_reg_mask & (1 << 0))) {
+	if ((size > SZ_1K) && (size < SZ_1T) && !(*ib_reg_mask & (1 << 0))) {
 		*ib_reg_mask |= (1 << 0);
 		return 0;
 	}
-- 
2.34.1