ACPI: EC: Don't re-enable GPE for each transaction.

With the auto selection of operation mode, absence of GPEs does not
really degrade performance, so let PM code to handle
enabling/disabling GPEs.
This is a revert of 5d57a6a55ec0bdcb952dbcd3f8ffcde8a3ee9413,
which was meant to be temporary.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=7977

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 50d55fe..41a21fc 100644 (file)
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -258,9 +258,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
                }
        }
 
-       /* Make sure GPE is enabled before doing transaction */
-       acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
-
        status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, 0);
        if (status) {
                printk(KERN_ERR PREFIX
@@ -638,12 +635,10 @@ static struct acpi_ec *make_acpi_ec(void)
        struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
        if (!ec)
                return NULL;
-
        ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
        mutex_init(&ec->lock);
        init_waitqueue_head(&ec->wait);
        INIT_LIST_HEAD(&ec->list);
-
        return ec;
 }