From 6a63b06f3c494cc87eade97f081300bda60acec7 Mon Sep 17 00:00:00 2001
From: Alexey Starikovskiy <astarikovskiy@suse.de>
Date: Fri, 28 Aug 2009 23:29:44 +0400
Subject: ACPI: EC: use BURST mode only for MSI notebooks

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 839b542..788db78 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -575,7 +575,8 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	if (bits != 8 && acpi_strict)
 		return AE_BAD_PARAMETER;
 
-	acpi_ec_burst_enable(ec);
+	if (EC_FLAGS_MSI)
+		acpi_ec_burst_enable(ec);
 
 	if (function == ACPI_READ) {
 		result = acpi_ec_read(ec, address, &temp);
@@ -596,7 +597,8 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		}
 	}
 
-	acpi_ec_burst_disable(ec);
+	if (EC_FLAGS_MSI)
+		acpi_ec_burst_disable(ec);
 
 	switch (result) {
 	case -EINVAL:
-- 
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