1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e6d4b084dca2..348a19e19b64 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -253,7 +253,7 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
                 acpi_ec_write_data(ec, *(wdata++));
         }
 
-        if (command == ACPI_EC_COMMAND_WRITE) {
+        if (!rdata_len) {
                 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
                 if (result)
                         return result;