Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0406ad33 authored by Alex Chiang's avatar Alex Chiang Committed by Len Brown
Browse files

ACPI: processor: add kernel command line support for early _PDC eval 



Allow platforms not listed in DMI table
to opt-in and evaluate _PDC early.

Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 92dcffb9

Documentation/kernel-parameters.txt

+4 −0
Original line number Diff line number Diff line
@@ -199,6 +199,10 @@ and is between 256 and 4096 characters. It is defined in the file 
			acpi_display_output=video

			See above.



	acpi_early_pdc_eval	[HW,ACPI] Evaluate processor _PDC methods

				early. Needed on some platforms to properly

				initialize the EC.



	acpi_irq_balance [HW,ACPI]

			ACPI will balance active IRQs

			default in APIC mode

drivers/acpi/processor_pdc.c

+7 −0
Original line number Diff line number Diff line
@@ -151,6 +151,13 @@ static int set_early_pdc_optin(const struct dmi_system_id *id) 
	return 0;

}



static int param_early_pdc_optin(char *s)

{

	early_pdc_optin = 1;

	return 1;

}

__setup("acpi_early_pdc_eval", param_early_pdc_optin);



static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {

	{

	set_early_pdc_optin, "HP Envy", {