powerpc: Fix little endian issue in OF PCI scan

This issue was causing the QEMU emulated USB device to fail dring
PCI probe.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index 4368ec6fdc8c..ac0b034f9ae0 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -302,7 +302,7 @@ static struct pci_dev *of_scan_pci_dev(struct pci_bus *bus,
                             struct device_node *dn)
 {
         struct pci_dev *dev = NULL;
-        const u32 *reg;
+        const __be32 *reg;
         int reglen, devfn;
 
         pr_debug("  * %s\n", dn->full_name);
@@ -312,7 +312,7 @@ static struct pci_dev *of_scan_pci_dev(struct pci_bus *bus,
         reg = of_get_property(dn, "reg", &reglen);
         if (reg == NULL || reglen < 20)
                 return NULL;
-        devfn = (reg[0] >> 8) & 0xff;
+        devfn = (of_read_number(reg, 1) >> 8) & 0xff;
 
         /* Check if the PCI device is already there */
         dev = pci_get_slot(bus, devfn);