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[CPUFREQ] powernow-k8: Don't try to transition if the pstate is incorrect

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This patch augments the pstate transition code to error out
(instead of returning 0) when an incorrect pstate is provided.

Suggested-by: Borislav Petkov <[email protected]>
CC: [email protected]
CC: [email protected]
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
Signed-off-by: Dave Jones <[email protected]>
This commit is contained in:
Konrad Rzeszutek Wilk 2011-06-16 15:36:40 -04:00 • committed by Dave Jones
commit fbb5b89eab
1 changed files with 2 additions and 1 deletions
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3
drivers/cpufreq/powernow-k8.c
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@ -1104,7 +1104,8 @@ static int transition_frequency_pstate(struct powernow_k8_data *data,
/* get MSR index for hardware pstate transition */
pstate = index & HW_PSTATE_MASK;
if (pstate > data->max_hw_pstate)
return 0;
return -EINVAL;
freqs.old = find_khz_freq_from_pstate(data->powernow_table,
data->currpstate);
freqs.new = find_khz_freq_from_pstate(data->powernow_table, pstate);