Re: [Linuxptp-users] Polling ptp clock not allowed?

[frank <sou...@gm...>]

On 02/25/2016 09:01 AM, frank wrote:
> On 02/24/2016 06:23 PM, Keller, Jacob E wrote:
>>> -----Original Message-----
>>> Finally a collegue used the patch below and the problem vanished(above
>>> test code did run a long time),
>>>  however it is unclear if the timestamps produced are still 'correct' and
>>> useful for ptp.
>>> The fix still looks surprising..
>>>
>>> kind regards
>>>   Frank
>>>
>> This is the work-around I was talking about below. I am surprised it is not in the 4.4 kernel?
>>
>> This is a known hardware errata on some of the parts (I am not sure which ones) and it should have had the workaround pushed upstream. I am guessing your collegue got this from the out-of-tree driver on SourceForge
> Hi,
>
> no, we looked at the 4.4 Code and backported it to 3.19, but our
> testcase still showed the problem.
> Thought "this workaround cannot work if..." and created the patch below
> ourselfes.
> Need to check sourceforge..
>
Hm, the code in e1000e-3.3.3.tar.gz looks like the one in the 4.4
kernel, so I suspect it will fail
using the testcase too.

regards
  Frank