diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index 562ffc1..8ecfe6f 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -157,7 +157,7 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
    return -EIO;
  }
  ssp->irq = dev->irq;
- ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
+ ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn-168;
  ssp->type = c->type;

  snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
--