Bug#631945: HFSC warning issue

[Michal Pokrywka <wolfmoon@o2.pl>]

After bisecting 2.6.39.1 it turned out that the bug is caused independently by two patches:

commit	b262a5da755cc6ed0cb4fba230cd9bf4037e1096
sch_sfq: fix peek() implementation

and

commit	9df49f2bfe862573911a080c75a6d81113c5c81d
sch_sfq: avoid giving spurious NET_XMIT_CN signals

Reverting these patches makes HFSC work again.

From: 00bormoj@gmail.com
> I had the same problem when I upgraded to 2.6.38 vanilla (and
> currently at 2.6.39.1), but I can't remember what the last successful
> version was (probably greater than 2.6.32). My syslog was full of the
> WARN_ON trace from sch_hfsc.c:1427.

Did you tested 2.6.38 or 2.6.38.8? Because mentioned patches was included in 2.6.38.8.