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.
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