linux-kernel - Re: Unable to mount NFSROOT: pcie change breaks e1000?

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Message-ID: <50364641.8010000@gmail.com>
Date:	Thu, 23 Aug 2012 23:03:29 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	Fengguang Wu <fengguang.wu@...el.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Unable to mount NFSROOT: pcie change breaks e1000?

Hi Bjorn,
	Could you please help to fold this small patch into 
"[5/40] PCI/core: Use PCI Express Capability accessors"?
It fixes a bug reported by Fengguang.
	Thanks!
	Gerry

On 08/23/2012 09:31 AM, Jiang Liu wrote:
> Hi Fengguang,
> 	Could you please help to verify whether following patch
> fixes the issue?
> 	Thanks!
> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index f6b491b..fac08f5 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -842,6 +842,9 @@ static int pci_save_pcie_state(struct pci_dev *dev)
>         struct pci_cap_saved_state *save_state;
>         u16 *cap;
> 
> +       if (!pci_is_pcie(dev))
> +               return 0;
> +
>         save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
>         if (!save_state) {
>                 dev_err(&dev->dev, "buffer not found in %s\n", __func__);
> 
> On 2012-8-23 8:46, Fengguang Wu wrote:
>> buffer not found
> 
> 
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