linux-kernel - Re: [Sparc64 BUG] hangup under booting 2.6.22.X whith Sparc64

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Message-ID: <406fe6c90709120047g1cf0a995r391e9fe1fbac7101@mail.gmail.com>
Date:	Wed, 12 Sep 2007 09:47:45 +0200
From:	"Kövedi Krisztián" <kovedi@...il.com>
To:	"David Miller" <davem@...emloft.net>
Cc:	linux-kernel@...r.kernel.org, stable-bounces@...nel.org,
	davem@...set.davemloft.net
Subject: Re: [Sparc64 BUG] hangup under booting 2.6.22.X whith Sparc64

2007/9/11, David Miller <davem@...emloft.net>:
>
> I think this patch should fix the problem.
>
> Please give it a try, thanks.
>
> diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
> index 139b4cf..e8dac81 100644
> --- a/arch/sparc64/kernel/pci.c
> +++ b/arch/sparc64/kernel/pci.c
> @@ -744,7 +744,7 @@ static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
>  {
>         struct device_node *child;
>         const u32 *reg;
> -       int reglen, devfn;
> +       int reglen, devfn, prev_devfn;
>         struct pci_dev *dev;
>
>         if (ofpci_verbose)
> @@ -752,14 +752,25 @@ static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
>                        node->full_name, bus->number);
>
>         child = NULL;
> +       prev_devfn = -1;
>         while ((child = of_get_next_child(node, child)) != NULL) {
>                 if (ofpci_verbose)
>                         printk("  * %s\n", child->full_name);
>                 reg = of_get_property(child, "reg", &reglen);
>                 if (reg == NULL || reglen < 20)
>                         continue;
> +
>                 devfn = (reg[0] >> 8) & 0xff;
>
> +               /* This is a workaround for some device trees
> +                * which list PCI devices twice.  On the V100
> +                * for example, device number 3 is listed twice.
> +                * Once as "pm" and once again as "lomp".
> +                */
> +               if (devfn == prev_devfn)
> +                       continue;
> +               prev_devfn = devfn;
> +
>                 /* create a new pci_dev for this device */
>                 dev = of_create_pci_dev(pbm, child, bus, devfn, 0);
>                 if (!dev)
>

Thanks
The patch work fine the kernel booting up without error messages.


when i patch the kernel become this error message:

patch -p1 < ~/2.6.22.6.patch
patching file arch/sparc64/kernel/pci.c
Hunk #1 FAILED at 744.
Hunk #2 FAILED at 752.
2 out of 2 hunks FAILED -- saving rejects to file arch/sparc64/kernel/pci.c.rej

but i add manual this patch the kernel and it works.
-
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