ACPI: EC: Don't expect interrupt after last read

There is no interrupt after last read according to spec, so
don't set bit that we are expecting one.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 08fbe62a2db4..5ce90ce22b58 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -228,7 +228,9 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
                                command);
                         goto end;
                 }
-                set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
+                /* Don't expect GPE after last read */
+                if (rdata_len > 1)
+                        set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
                 *(rdata++) = acpi_ec_read_data(ec);
         }
       end: