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8139too: Fall back to PIO when MMIO fails. 

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Dave Jones 2008-07-15 19:54:52 -04:00 committed by Jeff Garzik
parent 152151daec
commit 1a4dc68b31
1 changed files with 5 additions and 3 deletions
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8
drivers/net/8139too.c
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@ -788,6 +788,7 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
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 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
/* 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;