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Date: Thu, 16 Jun 2011 15:36:40 -0400 From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> To: linux-kernel@...r.kernel.org, x86@...nel.org, cpufreq@...r.kernel.org, davej@...hat.com, bp@...en8.de, Mark.Langsdorf@....com, andre.przywara@....com Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> Subject: [PATCH 3/3] [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: Borislav Petkov <bp@...en8.de> CC: andre.przywara@....com CC: Mark.Langsdorf@....com Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> --- drivers/cpufreq/powernow-k8.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 287c56f..bce576d 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -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); -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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