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Commit f05c9665 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Rafael J. Wysocki
Browse files

cpufreq: intel_pstate: disable HWP notifications 



Disable HWP Interrupt notification before enabling HWP. Since we don't
have HWP interrupt handling for possible performance interrupts, there
is not much use of enabling HWP interrupts.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 7791e4aa

drivers/cpufreq/intel_pstate.c

+3 −0
Original line number Diff line number Diff line
@@ -534,6 +534,9 @@ static void __init intel_pstate_sysfs_expose_params(void) 


static void intel_pstate_hwp_enable(struct cpudata *cpudata)

{

	/* First disable HWP notification interrupt as we don't process them */

	wrmsrl_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, 0x00);



	wrmsrl_on_cpu(cpudata->cpu, MSR_PM_ENABLE, 0x1);

}