From: Chen Gong <gong.chen@linux.intel.com>
Date: Sat, 3 Mar 2012 03:56:43 +0000 (+0800)
Subject: ACPI, APEI, EINJ, limit the range of einj_param
X-Git-Tag: v3.4-rc1~18^2~2^2~5
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=185210cc754754c2504afcef9d1c9cd4b8761a9c;p=karo-tx-linux.git

ACPI, APEI, EINJ, limit the range of einj_param

On the platforms with ACPI4.x support, parameter extension
is not always doable, which means only parameter extension
is enabled, einj_param can take effect.

v2->v1: stopping early in einj_get_parameter_address for einj_param

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 4ca087dd5f4f..3d3816f6d367 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -238,7 +238,7 @@ static void *einj_get_parameter_address(void)
 			return v5param;
 		}
 	}
-	if (paddrv4) {
+	if (param_extension && paddrv4) {
 		struct einj_parameter *v4param;
 
 		v4param = acpi_os_map_memory(paddrv4, sizeof(*v4param));