[CPUFREQ] powernow-k8: read P-state from HW
By definition, "cpuinfo_cur_freq" should report the value from HW. So, don't depend on the cached value. Instead read P-state directly from HW, while taking into account the erratum 311 workaround for Fam 11h processors. Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Langsdorf, Mark <mark.langsdorf@amd.com> Cc: Thomas Renninger <trenn@suse.de> Signed-off-by: NNaga Chumbalkar <nagananda.chumbalkar@hp.com> Reviewed-by: NAndreas Herrmann <andreas.herrmann3@amd.com> Tested-by: NAndreas Herrmann <andreas.herrmann3@amd.com> Acked-by: NLangsdorf, Mark <mark.langsdorf@amd.com> Signed-off-by: NThomas Renninger <trenn@suse.de> Signed-off-by: NDave Jones <davej@redhat.com>
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