8139too: Fall back to PIO when MMIO fails.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index f62ac64..8a5b0d2 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -788,6 +788,7 @@
DPRINTK("PIO region size == 0x%02X\n", pio_len);
DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
+retry:
if (use_io) {
/* make sure PCI base addr 0 is PIO */
if (!(pio_flags & IORESOURCE_IO)) {
@@ -836,9 +837,10 @@
/* ioremap MMIO region */
ioaddr = pci_iomap(pdev, 1, 0);
if (ioaddr == NULL) {
- dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
- rc = -EIO;
- goto err_out;
+ dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
+ pci_release_regions(pdev);
+ use_io = 1;
+ goto retry;
}
dev->base_addr = (long) ioaddr;
tp->regs_len = mmio_len;