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Message-Id: <200807152354.m6FNsqCd026936@gelk.kernelslacker.org>
Date: Tue, 15 Jul 2008 19:54:52 -0400
From: Dave Jones <davej@...hat.com>
To: netdev@...r.kernel.org
Subject: [3/3] 8139too: Fall back to PIO when MMIO fails.
Signed-off-by: Dave Jones <davej@...hat.com>
--- linux-2.6.26.noarch/drivers/net/8139too.c~ 2008-07-15 18:49:02.000000000 -0400
+++ linux-2.6.26.noarch/drivers/net/8139too.c 2008-07-15 18:53:07.000000000 -0400
@@ -784,6 +784,7 @@ static int __devinit rtl8139_init_board
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)) {
@@ -832,9 +833,10 @@ static int __devinit rtl8139_init_board
/* 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;
--
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