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 (file)
--- 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: