linux-kernel - Re: [PATCH] e1000e: fix use of pci_enable_pcie_error

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Message-ID: <4A8396B3.6090609@redhat.com>
Date:	Thu, 13 Aug 2009 12:29:39 +0800
From:	Danny Feng <dfeng@...hat.com>
To:	David Miller <davem@...emloft.net>
CC:	john.ronciak@...el.com, peter.p.waskiewicz.jr@...el.com,
	bruce.w.allan@...el.com, jesse.brandeburg@...el.com,
	jeffrey.t.kirsher@...el.com, e1000-devel@...ts.sourceforge.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] e1000e: fix use of pci_enable_pcie_error_reporting

On 08/13/2009 11:46 AM, David Miller wrote:
> From: Xiaotian Feng<dfeng@...hat.com>
> Date: Fri,  7 Aug 2009 17:36:14 +0800
>
>> commit 111b9dc5 introduces pcie aer support for e1000e, but it is not
>> reasonable to disable it in e1000_remove but enable it in e1000_resume.
>> This patch enables aer support in e1000_probe.
>>
>> Signed-off-by: Xiaotian Feng<dfeng@...hat.com>
>
> In moving this block of code, you've corrupted the indentation,
> making it more indented than it should be.
>
> In any event, I expect the Intel folks to pick this up.
Yes, I agree.... but each time I resume from suspend or rmmod e1000e, 
there's a warning message like "pci_enable_pcie_error_reporting failed 
0xfffffffb". Since some devices may not support aer, why not silence 
this kind of warning?

modprobe e1000e everything is as usual, but then rmmod e1000e, we'll see 
"pci_disable_pcie_error_reporting failed 0xfffffffb", it is so weird...
>
>> diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
>> index 63415bb..e2f0304 100644
>> --- a/drivers/net/e1000e/netdev.c
>> +++ b/drivers/net/e1000e/netdev.c
>> @@ -4670,14 +4670,6 @@ static int e1000_resume(struct pci_dev *pdev)
>>   		return err;
>>   	}
>>
>> -	/* AER (Advanced Error Reporting) hooks */
>> -	err = pci_enable_pcie_error_reporting(pdev);
>> -	if (err) {
>> -		dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed "
>> -		                    "0x%x\n", err);
>> -		/* non-fatal, continue */
>> -	}
>> -
>>   	pci_set_master(pdev);
>>
>>   	pci_enable_wake(pdev, PCI_D3hot, 0);
>> @@ -4990,6 +4982,14 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
>>   	if (err)
>>   		goto err_pci_reg;
>>
>> +        /* AER (Advanced Error Reporting) hooks */
>> +        err = pci_enable_pcie_error_reporting(pdev);
>> +        if (err) {
>> +                dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed "
>> +                                    "0x%x\n", err);
>> +                /* non-fatal, continue */
>> +        }
>> +
>>   	pci_set_master(pdev);
>>   	/* PCI config space info */
>>   	err = pci_save_state(pdev);
>> -- 
>> 1.6.2.5
>>

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