On 18-09-2007 13:17, Valentine Barshak wrote:
> PCI memory space may have a 64-bit offset on some architectures
> (for example, PowerPC 440) and the actual PCI memory address
> has to fixed up (an offset to PCI mem space shuld be added)
> before remapping. So, pci_iomap should be used instead of
> reading and remapping PCI BAR directly. This has been tested
> on Sequoia PowerPC 440EPx board.
>
> Signed-off-by: Valentine Barshak <[email protected]>
> ---
>
> --- linux-2.6.orig/drivers/pci/quirks.c 2007-09-04 21:15:43.000000000 +0400
> +++ linux-2.6.bld/drivers/pci/quirks.c 2007-09-05 20:46:14.000000000 +0400
> @@ -1444,9 +1444,9 @@
> static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
> {
> u16 command;
> - u32 bar;
> u8 __iomem *csr;
> u8 cmd_hi;
> + int rc;
>
> switch (dev->device) {
> /* PCI IDs taken from drivers/net/e100.c */
> @@ -1476,16 +1476,17 @@
> * re-enable them when it's ready.
> */
> pci_read_config_word(dev, PCI_COMMAND, &command);
> - pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar);
>
> - if (!(command & PCI_COMMAND_MEMORY) || !bar)
> + rc = pci_request_region(dev, 0, "e100_quirk");
> +
> + if (!(command & PCI_COMMAND_MEMORY) || (rc < 0))
> return;
I didn't look at this too much, but isn't something like:
if (rc >= 0)
goto e100_quirk_exit;
needed before this return?
Regards,
Jarek P.
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