From 2947c1d5f72b77078aeb3df05d4298274234534d Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Wed, 28 May 2014 01:14:55 +0800
Subject: ACPICA: acpidump: Fix repetitive table dump in -n mode.

In "-n" mode, reserved tables (RSDP/RSDT/XSDT/DSDT/FACS) are dumped
multiple times due a missing instance check in osl_get_bios_table().
This patch fixes this issue.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
index ba7bad0..28c5200 100644
--- a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
+++ b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
@@ -783,6 +783,10 @@ osl_get_bios_table(char *signature,
 	    ACPI_COMPARE_NAME(signature, ACPI_SIG_XSDT) ||
 	    ACPI_COMPARE_NAME(signature, ACPI_SIG_DSDT) ||
 	    ACPI_COMPARE_NAME(signature, ACPI_SIG_FACS)) {
+		if (instance > 0) {
+			return (AE_LIMIT);
+		}
+
 		/*
 		 * Get the appropriate address, either 32-bit or 64-bit. Be very
 		 * careful about the FADT length and validate table addresses.
-- 
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