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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2019-03-25 15:09:33 +0530 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-04-15 13:24:01 +0100 |
| commit | f316a2b53cd7f37963ae20ec7072eb27a349a4ce (patch) | |
| tree | b58669c006dc6d48f2a6c44b7442352d176aca87 /drivers/pci | |
| parent | 2aadcb0cd39198833fabe1c45084f78686e71a6c (diff) | |
| download | linux-f316a2b53cd7f37963ae20ec7072eb27a349a4ce.tar.bz2 | |
PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
hook_fault_code() is an ARM32 specific API for hooking into data abort.
AM65X platforms (that integrate ARM v8 cores and select CONFIG_ARM64 as
arch) rely on pci-keystone.c but on them the enumeration of a
non-present BDF does not trigger a bus error, so the fixup exception
provided by calling hook_fault_code() is not needed and can be guarded
with CONFIG_ARM.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/dwc/pci-keystone.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index dfe54553d832..93296d434f40 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -710,6 +710,7 @@ err: 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 @@ -729,6 +730,7 @@ 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) { @@ -778,12 +780,14 @@ 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); |