Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: linux-4.14-rc1/arch/powerpc/perf/hv-24x7.c:541: bad condition ? | Date | Thu, 21 Sep 2017 21:01:28 +1000 |
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[ + Cody in case he's still interested]
Michael Ellerman <mpe@ellerman.id.au> writes: > David Binderman <dcb314@hotmail.com> writes: > >> Hello there, >> >> linux-4.14-rc1/arch/powerpc/perf/hv-24x7.c:543]: (warning) Identical condition 's1<s2', second condition is always false >> >> Source code is >> >> if (s1 < s2) >> return 1; >> if (s2 > s1) >> return -1; >> >> Suggest code rework. > > Um thanks. > > It's trying to implement a sort comparison returning -1, 0, 1. > > So it's pretty obviously wrong, but also harmless AFAICS, because it's > just an optimisation before doing a full comparison using memcmp(). > > So yeah we should fix it, but not an actual bug AFAICS. > > cheers
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