1 files changed, 11 insertions, 6 deletions

diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index 603dff3ad62a..17fcb4842fe5 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -914,6 +914,17 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
         u8 pin;
         int rc;
 
+        /* We need to first check if the PCI device has a PCI interrupt at all
+         * since we have cases where the device-node might expose non-PCI
+         * interrupts, but the device has no PCI interrupt to it
+         */
+        rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
+        if (rc != 0)
+                return rc;
+        /* No pin, exit */
+        if (pin == 0)
+                return -ENODEV;
+
         /* Check if we have a device node, if yes, fallback to standard OF
          * parsing
          */
@@ -925,12 +936,6 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
          * interrupt spec.  we assume #interrupt-cells is 1, which is standard
          * for PCI. If you do different, then don't use that routine.
          */
-        rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
-        if (rc != 0)
-                return rc;
-        /* No pin, exit */
-        if (pin == 0)
-                return -ENODEV;
 
         /* Now we walk up the PCI tree */
         lspec = pin;