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

Kishon Vijay Abraham I
2019-01-14T13:28:09Z

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