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Commit d24a9da5 authored by Matthew Garrett's avatar Matthew Garrett
Browse files

IPS driver: Fix limit clamping when reducing CPU power 



Values here are in internal units rather than Watts, so we shouldn't
perform any conversion.

Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 96f3823f

drivers/platform/x86/intel_ips.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -415,7 +415,7 @@ static void ips_cpu_lower(struct ips_driver *ips) 
	new_limit = cur_limit - 8; /* 1W decrease */

	new_limit = cur_limit - 8; /* 1W decrease */





	/* Clamp to SKU TDP limit */

	/* Clamp to SKU TDP limit */

	if (((new_limit * 10) / 8) < (ips->orig_turbo_limit & TURBO_TDP_MASK))

	if (new_limit  < (ips->orig_turbo_limit & TURBO_TDP_MASK))

		new_limit = ips->orig_turbo_limit & TURBO_TDP_MASK;

		new_limit = ips->orig_turbo_limit & TURBO_TDP_MASK;





	thm_writew(THM_MPCPC, (new_limit * 10) / 8);

	thm_writew(THM_MPCPC, (new_limit * 10) / 8);