linux-kernel - RE: 82571EB: Detected Hardware Unit Hang

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Message-ID: <061C8A8601E8EE4CA8D8FD6990CEA8913348B105@ORSMSX102.amr.corp.intel.com>
Date:	Wed, 14 Nov 2012 03:45:30 +0000
From:	"Dave, Tushar N" <tushar.n.dave@...el.com>
To:	Joe Jin <joe.jin@...cle.com>
CC:	"e1000-devel@...ts.sf.net" <e1000-devel@...ts.sf.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mary Mcgrath <mary.mcgrath@...cle.com>
Subject: RE: 82571EB: Detected Hardware Unit Hang

>-----Original Message-----
>From: Joe Jin [mailto:joe.jin@...cle.com]
>Sent: Tuesday, November 13, 2012 6:48 PM
>To: Dave, Tushar N
>Cc: e1000-devel@...ts.sf.net; netdev@...r.kernel.org; linux-
>kernel@...r.kernel.org; Mary Mcgrath
>Subject: Re: 82571EB: Detected Hardware Unit Hang
>
>On 11/09/12 04:35, Dave, Tushar N wrote:
>> All devices in path from root complex to 82571, should have *same* max
>payload size otherwise it can cause hang.
>> Can you double check this?
>
>Hi Tushar,
>
>Checked with hardware vendor and they said no way to modify the max
>payload size from BIOS, can I modify it from driver side?

If you want to change value for 82571 device you can do it from eeprom but for other upstream devices I am not sure. I will check with my team.

-Tushar

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