BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885

From: leroy christophe <hidden>
Date: 2013-11-20 10:21:52
Also in: lkml 

Scott,

The patch "Convert some mftb/mftbu into mfspr" 
(beb2dc0a7a84be003ce54e98b95d65cc66e6e536) breaks startup on MPC885.

The CPU traps (SoftwareEmulation trap) at sched_clock() when trying to 
read TBU with mfspr.

Reverting the patch solves the issue.

What's the prefered way to fix this ?

Christophe
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