[PATCH 12/24] PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64

[Kishon Vijay Abraham I <kishon@ti.com>]

hook_fault_code is an ARM32 specific API for hooking into data abort.
Since pci-keystone.c will be used for AM65X platforms which is an
ARM64 platform, allow hook_fault_code to be compiled only for ARM32.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 drivers/pci/controller/dwc/pci-keystone.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index d1ecf826dfe8..9d7cedd96505 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -693,6 +693,7 @@ static int ks_pcie_config_legacy_irq(struct keystone_pcie *ks_pcie)
 	return ret;
 }
 
+#ifdef CONFIG_ARM
 /*
  * When a PCI device does not exist during config cycles, keystone host gets a
  * bus error instead of returning 0xffffffff. This handler always returns 0
@@ -712,6 +713,7 @@ static int ks_pcie_fault(unsigned long addr, unsigned int fsr,
 
 	return 0;
 }
+#endif
 
 static int __init ks_pcie_init_id(struct keystone_pcie *ks_pcie)
 {
@@ -761,12 +763,14 @@ static int __init ks_pcie_host_init(struct pcie_port *pp)
 	if (ret < 0)
 		return ret;
 
+#ifdef CONFIG_ARM
 	/*
 	 * PCIe access errors that result into OCP errors are caught by ARM as
 	 * "External aborts"
 	 */
 	hook_fault_code(17, ks_pcie_fault, SIGBUS, 0,
 			"Asynchronous external abort");
+#endif
 
 	ks_pcie_start_link(pci);
 	dw_pcie_wait_for_link(pci);
-- 
2.17.1