8139too: Fall back to PIO when MMIO fails.
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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152151daec
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1a4dc68b31
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@ -788,6 +788,7 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
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DPRINTK("PIO region size == 0x%02X\n", pio_len);
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DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
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retry:
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if (use_io) {
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/* make sure PCI base addr 0 is PIO */
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if (!(pio_flags & IORESOURCE_IO)) {
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@ -836,9 +837,10 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
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/* ioremap MMIO region */
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ioaddr = pci_iomap(pdev, 1, 0);
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if (ioaddr == NULL) {
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dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
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rc = -EIO;
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goto err_out;
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dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
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pci_release_regions(pdev);
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use_io = 1;
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goto retry;
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}
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dev->base_addr = (long) ioaddr;
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tp->regs_len = mmio_len;
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