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powerpc/booke: don't reinitialize time base

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For some reason long ago I decided that we should zero out the time base
when we calibrate the decrementer.  The problem is that this can be
harmful in SMP systems where the firmware has already synchronized the
time bases on the various cores.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2008-06-27 08:03:13 -05:00
parent 98384c6cdd
commit ddb107e98b
1 changed files with 0 additions and 4 deletions
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4
arch/powerpc/kernel/time.c
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@ -742,10 +742,6 @@ void __init generic_calibrate_decr(void)
}
#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
/* Set the time base to zero */
mtspr(SPRN_TBWL, 0);
mtspr(SPRN_TBWU, 0);
/* Clear any pending timer interrupts */
mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);