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powercap/RAPL: prevent overridding bits outside of the mask
Fixes wrong bits shift operation in the rapl_write_data_raw function, which might cause overridding bits outside of the mask. For example, writing new TIME_WINDOW1 value can override POWER_LIMIT1. Signed-off-by: Adam Lessnau <adam.lessnau@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -874,7 +874,9 @@ static int rapl_write_data_raw(struct rapl_domain *rd,
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cpu = rd->rp->lead_cpu;
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bits = rapl_unit_xlate(rd, rp->unit, value, 1);
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bits |= bits << rp->shift;
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bits <<= rp->shift;
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bits &= rp->mask;
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memset(&ma, 0, sizeof(ma));
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ma.msr_no = rd->msrs[rp->id];
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