[SERIAL] Fix the calculation of the number of UARTs

The calculation ended up believing we had one less UART than we
really had.  Fix it.

diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index e321bc62f4801e83c35ad5c5bf18e2355a02a3e8..3d430adfe33a20f3fa20a62fde226d9cbcc8f03e 100644 (file)
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -525,7 +525,7 @@ pci_default_setup(struct pci_dev *dev, struct pci_board *board,
        else
                offset += idx * board->uart_offset;
 
-       maxnr = (pci_resource_len(dev, bar) - board->uart_offset) /
+       maxnr = (pci_resource_len(dev, bar) - board->first_offset) /
                (8 << board->reg_shift);
 
        if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)