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authorDave Jones <davej@redhat.com>2008-07-16 03:54:52 +0400
committerJeff Garzik <jgarzik@redhat.com>2008-07-23 01:59:30 +0400
commit1a4dc68b31fd04573ab3c554702372941a4fd46f (patch)
treea6f48a3d180381b07d3a10cf5dd4bb8dd5c9d6ac /drivers/net/8139too.c
parent152151daece9d5dfd86e652b95846072c0d2b566 (diff)
downloadlinux-1a4dc68b31fd04573ab3c554702372941a4fd46f.tar.xz
8139too: Fall back to PIO when MMIO fails.
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/8139too.c')
-rw-r--r--drivers/net/8139too.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index f62ac64e98fe..8a5b0d293f75 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -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;