Intel em receive hang and possible pr #72970

[Joe Holden]

Jack Vogel wrote:
> On 8/31/06, Joe Holden <joe at joeholden.co.uk> wrote:
>> Jack Vogel wrote:
>> > On 8/31/06, Rob Watt <rob at hudson-trading.com> wrote:
>> >
>> >> After poking around in various group/pr postings the most similar 
>> problem
>> >> that we found was PR #72970.
>> >>   http://www.freebsd.org/cgi/query-pr.cgi?pr=72970
>> >>
>> >> Does it seem that we are encountering that bug? Is that bug fixed in
>> >> 6.1-RELEASE, or is there an easy patch to 6.0-RELEASE (i.e. can we 
>> only
>> >> patch the em driver).
>> >
>> > That fix is only just into the STABLE code, so no, not in 6.1-RELEASE.
>> > You could take the tip of STABLE, but if you have only a 6.0 based
>> > system I know you are going to run into some backward 
>> incompatabililties.
>> > As a matter of fact I dont believe the STABLE tip will even build on
>> > RELEASE (something that I take issue with).
>> >
>> > Sounds like its at least possible this is your problem, worth 
>> setting up a
>> > system to test with I would say.
>> >
>> > Good Luck,
>> >
>> > Jack
>> > Intel LAD
>> > _______________________________________________
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>> IF you want latest -STABLE you use stable, if you want code AS-IS when
>> it was released, you use RELEASE
>>
> 
> I agree with that in the case of generic OS, but from the standpoint of 
> a driver
> developer/maintainer I hope you see why this is a problem, yes?
> 
> In the commercial world they dont want to upgrade a complete OS to get a
> couple line bug fix in a driver, so making the driver backward compatible
> WHEN POSSIBLE (and I know thats not always doable) is goodness.
> 
> Jack
Agreed, unfortunately major ABI changes break backwards compatability, 
which I agree, shouldn't happen in a STABLE branch.

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