On Sat, 12 May 2007 22:12:37 +0200 Lukas Hejtmanek <[email protected]> wrote:
> as of 2.6.21-git16, the bugs related to restoring PCI are still present. The
> save pci function reads only -1 from the PCI config space and when restoring,
> it messes up totaly most PCI devices. The attached patch is workaround only
> until proper fix is found and included. Could it be included into the mainline
> for now?
>
> --
> Lukáš Hejtmánek
>
>
> [pci.patch text/x-diff (489B)]
> --- drivers/pci/pci.c.orig 2006-07-15 23:53:08.000000000 +0200
> +++ drivers/pci/pci.c 2006-07-21 00:51:07.000000000 +0200
> @@ -477,7 +477,7 @@
> */
> for (i = 15; i >= 0; i--) {
> pci_read_config_dword(dev, i * 4, &val);
> - if (val != dev->saved_config_space[i]) {
> + if (val != dev->saved_config_space[i] && dev->saved_config_space[i] != 0xffffffff) {
> printk(KERN_DEBUG "PM: Writing back config space on "
> "device %s at offset %x (was %x, writing %x)\n",
> pci_name(dev), i,
This change might indeed be a suitable workaround for some busted hardware,
but we'd need to know quite a bit about the problem before we could merge
anything like this
So, again, please send a full bug report. An emailed one would be OK in
this case.
Thanks.
-
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