From 2880646d24208d6465c1eb8f6d77ea2b29fc6578 Mon Sep 17 00:00:00 2001
From: Bruno Ducrot <bruno@FreeBSD.org>
Date: Sat, 15 Jul 2006 17:34:03 +0000
Subject: [PATCH] Eliminate duplicate p-states entries

Reported and tested by:	ales dot rom at kabelnet dot net
Reviewed by:	njl
Approved by:	njl, imp (mentor)
MFC after:	3 days
---
 sys/dev/acpica/acpi_perf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/dev/acpica/acpi_perf.c b/sys/dev/acpica/acpi_perf.c
index 4d195b6eecd..79bd0f12b4b 100644
--- a/sys/dev/acpica/acpi_perf.c
+++ b/sys/dev/acpica/acpi_perf.c
@@ -299,6 +299,12 @@ acpi_perf_evaluate(device_t dev)
 		    sc->px_states[count].core_freq >= 0xffff)
 			continue;
 
+		/* Check for duplicate entries */
+		if (count > 0 &&
+		    sc->px_states[count - 1].core_freq ==
+			sc->px_states[count].core_freq)
+			continue;
+
 		count++;
 	}
 	sc->px_count = count;