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of/pci: Add of_pci_check_probe_only to parse "linux,pci-probe-only"

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Both pci-host-generic and Pseries parse the "linux,pci-probe-only" property
to engage the PCI_PROBE_ONLY mode, and both have a subtle bug that can be
triggered if the property has no parameter.

Provide a generic, safe implementation that can be used by both.

[bhelgaas: fold in #include <asm-generic/pci-bridge.h>]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Marc Zyngier
2015-09-04 17:50:08 +01:00
committed by Bjorn Helgaas
parent 6ff33f3902
commit f81c11af61
2 changed files with 29 additions and 0 deletions
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3
include/linux/of_pci.h
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@@ -17,6 +17,7 @@ int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
int of_get_pci_domain_nr(struct device_node *node);
void of_pci_dma_configure(struct pci_dev *pci_dev);
void of_pci_check_probe_only(void);
#else
static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
{
@@ -53,6 +54,8 @@ of_get_pci_domain_nr(struct device_node *node)
}
static inline void of_pci_dma_configure(struct pci_dev *pci_dev) { }
static inline void of_pci_check_probe_only(void) { }
#endif
#if defined(CONFIG_OF_ADDRESS)