netdev - Re: [PATCH net]tg3: tg3_disable_ints using uninitialized mailbox value to disable interrupts

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Date:	Mon, 22 Dec 2014 12:06:25 -0200
From:	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:	Nils Holland <nholland@...ys.org>,
	Prashant Sreedharan <prashant@...adcom.com>
CC:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-pci@...r.kernel.org, bhelgaas@...gle.com,
	rajatxjain@...il.com, Michael Chan <mchan@...adcom.com>
Subject: Re: [PATCH net]tg3: tg3_disable_ints using uninitialized mailbox
 value to disable interrupts

On 20-12-2014 20:16, Nils Holland wrote:
> On Sat, Dec 20, 2014 at 12:16:17PM -0800, Prashant Sreedharan wrote:
>>
>> This driver bug was exposed because of the commit a7877b17a667 (PCI: Check only
>> the Vendor ID to identify Configuration Request Retry). Also this issue is only
>> seen in older generation chipsets like 5722 because config space write to offset
>> 0 from driver is possible.
>>
>> Fixed by initializing the interrupt mailbox registers before calling tg3_halt.
>>
>> Please queue for -stable.
>
> I gave this patch a try and can confirm what was to be expected: It
> fixes the issue and the network interface is once again working
> properly on my system. Thus, I guess the issue is adequately solved.
>
> Thanks to everyone involved, especially to Marcelo for additional
> debugging and the guys at Broadcom for the quick fix!
>
> Greetings,
> Nils

Same here, it works again.

Thanks!
Marcelo
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