Instead of calling both of_irq_parse_pci and irq_create_of_mapping, call
of_irq_parse_and_map_pci instead which does the same thing. This will
allow making of_irq_parse_pci a private, static function.

This changes the logic slightly in that the fallback path will also be
taken if irq_create_of_mapping fails internally.

Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Rob Herring <r...@kernel.org>
---
 arch/powerpc/kernel/pci-common.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 0ac7aa346c69..f65c07dec23e 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -339,7 +339,6 @@ struct pci_controller* pci_find_hose_for_OF_device(struct 
device_node* node)
  */
 static int pci_read_irq_line(struct pci_dev *pci_dev)
 {
-       struct of_phandle_args oirq;
        unsigned int virq;
 
        pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
@@ -348,7 +347,7 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
        memset(&oirq, 0xff, sizeof(oirq));
 #endif
        /* Try to get a mapping from the device-tree */
-       if (of_irq_parse_pci(pci_dev, &oirq)) {
+       if (!of_irq_parse_and_map_pci(pci_dev, 0, 0)) {
                u8 line, pin;
 
                /* If that fails, lets fallback to what is in the config
@@ -372,11 +371,6 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
                virq = irq_create_mapping(NULL, line);
                if (virq)
                        irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
-       } else {
-               pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %pOF\n",
-                        oirq.args_count, oirq.args[0], oirq.args[1], oirq.np);
-
-               virq = irq_create_of_mapping(&oirq);
        }
 
        if (!virq) {
-- 
2.14.1

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