arch/microblaze/kernel/head.S: redundant code?

[Adrian McMenamin]

Looking at this code at line 78 (in 3.17 kernel) it has:

    mfs r1, rmsr
    msrclr r8, 0
    cmpu r8, r8, r1

But as far as I can see the result of that comparison is never used -
the comments state it is to test if the msrclr  instruction is
enabled.

Haven't posted a patch because I am using the code to understand how
to write my own boot code for a very specific Microblaze application -
but perhaps someone with real expertise could look and/or tell me I'm
wrong?

Cheers

Adrian

(apologies to Michal Simek for getting this twice)
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