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Date: Fri, 6 Sep 2013 17:25:05 +0200
From: "Arend van Spriel" <arend@broadcom.com>
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cc: linux-wireless <linux-wireless@vger.kernel.org>,
	"Hauke Mehrtens" <hauke@hauke-m.de>
Subject: Re: bcma problem on x86_64
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On 09/06/2013 11:05 AM, Arend van Spriel wrote:
> On 09/06/2013 10:05 AM, Rafał Miłecki wrote:
>> Hi,
>>
>> 2013/9/5 Arend van Spriel <arend@broadcom.com>:
>>> Since 3.11-rc4 I am seeing a problem with bcma on x64 (see attached
>>> log). I
>>> thought I misconfigured my setup, but just upgraded to 3.11 and I am
>>> still
>>> seeing the same issue. Did you have any reports like this?
>>
>> Unfortunately I wasn't testing final 3.11 with x86_64, I'll give it a
>> try over the weekend.
>>
>
> I am bisecting. Will let you know when I find something.

Bisect points to:

fd4edf197544bae1c77d84bad354aa7ce1d08ce1 is the first bad commit
commit fd4edf197544bae1c77d84bad354aa7ce1d08ce1
Author: Hauke Mehrtens <hauke@hauke-m.de>
Date:   Mon Jul 15 13:15:08 2013 +0200

     bcma: fix handling of big addrl

     The return value of bcma_erom_get_addr_desc() is a unsigned value 
and it
     could wrap around in the two complement writing. This happens for one
     core in the BCM4708 SoC.

     Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
     Signed-off-by: John W. Linville <linville@tuxdriver.com>

It is probably caused by using IS_ERR_VALUE() macro which does a 
unsigned long cast, which gives different results on 64-bit platform.

This patch was submitted upstream yesterday by Dave for 3.12-rc1.

Regards,
Arend

> Gr. AvS
>
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