Commit fbb5b89e authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk Committed by Dave Jones

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

This patch augments the pstate transition code to error out
(instead of returning 0) when an incorrect pstate is provided.
Suggested-by: default avatarBorislav Petkov <bp@alien8.de>
CC: andre.przywara@amd.com
CC: Mark.Langsdorf@amd.com
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent a9d3d206
......@@ -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);
......
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