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

[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

drivers/cpufreq/powernow-k8.c

+2 −1
Original line number Diff line number Diff line
@@ -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);