From: Kishon Vijay Abraham I <kishon@xxxxxx>
commit 3d0b2a3a87ce5ae85de46c4241afd52ab8b566fe upstream.
Both TI's AM65x (K3) and TI's K2 PCIe driver are implemented in
pci-keystone. However Only K2 PCIe driver should use it's own pci_ops
for configuration space accesses. But commit 10a797c6e54a
("PCI: dwc: keystone: Use pci_ops for config space accessors") used
custom pci_ops for both AM65x and K2. This breaks configuration space
access for AM65x platform. Fix it here.
Link: https://lore.kernel.org/r/20210317131518.11040-1-kishon@xxxxxx
Fixes: 10a797c6e54a ("PCI: dwc: keystone: Use pci_ops for config space accessors")
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Reviewed-by: Krzysztof Wilczyński <kw@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v5.10
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/controller/dwc/pci-keystone.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -811,7 +811,8 @@ static int __init ks_pcie_host_init(stru
int ret;
pp->bridge->ops = &ks_pcie_ops;
- pp->bridge->child_ops = &ks_child_pcie_ops;
+ if (!ks_pcie->is_am6)
+ pp->bridge->child_ops = &ks_child_pcie_ops;
ret = ks_pcie_config_legacy_irq(ks_pcie);
if (ret)
