ACPI EC: remove potential deadlock from EC

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index b28b565..2300d81 100644 (file)
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -710,9 +710,7 @@ static int acpi_ec_add(struct acpi_device *device)
        /* Check if we found the boot EC */
        if (boot_ec) {
                if (boot_ec->gpe == ec->gpe) {
-                       mutex_lock(&boot_ec->lock);
                        ec_remove_handlers(boot_ec);
-                       mutex_unlock(&boot_ec->lock);
                        mutex_destroy(&boot_ec->lock);
                        kfree(boot_ec);
                        first_ec = boot_ec = NULL;