diff options
Diffstat (limited to 'drivers/misc/cros_ec_spi.c')
| -rw-r--r-- | drivers/misc/cros_ec_spi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/cros_ec_spi.c b/drivers/misc/cros_ec_spi.c index 2fc9110..ef73782 100644 --- a/drivers/misc/cros_ec_spi.c +++ b/drivers/misc/cros_ec_spi.c @@ -42,6 +42,12 @@ int cros_ec_spi_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version, int csum, len; int rv; + if (dev->protocol_version != 2) { + debug("%s: Unsupported EC protcol version %d\n", + __func__, dev->protocol_version); + return -1; + } + /* * Sanity-check input size to make sure it plus transaction overhead * fits in the internal device buffer. |