ACPI: EC: Don't do transaction from GPE handler in poll mode.
Referencies: http://bugzilla.kernel.org/show_bug.cgi?id=12004
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 ab84f99..bd1af3e 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -581,9 +581,12 @@
pr_debug(PREFIX "~~~> interrupt\n");
status = acpi_ec_read_status(ec);
- gpe_transaction(ec, status);
- if (ec_transaction_done(ec) && (status & ACPI_EC_FLAG_IBF) == 0)
- wake_up(&ec->wait);
+ if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) {
+ gpe_transaction(ec, status);
+ if (ec_transaction_done(ec) &&
+ (status & ACPI_EC_FLAG_IBF) == 0)
+ wake_up(&ec->wait);
+ }
ec_check_sci(ec, status);
if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&