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Subject[PATCH] longhaul: select Longhaul version 2 for capable CPUs
From: Krzysztof Helt <>

There is a typo in the longhaul detection code so only Longhaul v1 or Longhaul v3
is selected. The Longhaul v2 is not selected even for CPUs which are capable of.

Tested on PCChips Giga Pro board. Frequency changes work and the Longhaul v2
detects that the board is not capable of changing CPU voltage.

Signed-off-by: Krzysztof Helt <>

diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c
index ce2ed3e..cabd2fa 100644
--- a/arch/x86/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c
@@ -813,7 +813,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
memcpy(eblcr, samuel2_eblcr, sizeof(samuel2_eblcr));
case 1 ... 15:
- longhaul_version = TYPE_LONGHAUL_V1;
+ longhaul_version = TYPE_LONGHAUL_V2;
if (c->x86_mask < 8) {
cpu_model = CPU_SAMUEL2;
cpuname = "C3 'Samuel 2' [C5B]";

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