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author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-07-19 12:40:22 -0400 |
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committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-07-19 12:40:22 -0400 |
commit | ca79234af3a9e6d942763a58956b337e69bf1340 (patch) | |
tree | e3b923f28f8e1282a16a0b55d7dce7e2b0a9fa44 /drivers/platform/chrome/cros_ec_proto.c | |
parent | 858848641fbecd42437e36adc9291b0ce5db379e (diff) | |
parent | 3bd837bfe431839a378e9d421af05b2e22a6d329 (diff) |
Merge tag 'v4.19.59' into v4.19-rt
This is the 4.19.59 stable release
Diffstat (limited to 'drivers/platform/chrome/cros_ec_proto.c')
-rw-r--r-- | drivers/platform/chrome/cros_ec_proto.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c index e5d5b1adb5a9..ac784ac66ac3 100644 --- a/drivers/platform/chrome/cros_ec_proto.c +++ b/drivers/platform/chrome/cros_ec_proto.c @@ -67,6 +67,17 @@ static int send_command(struct cros_ec_device *ec_dev, else xfer_fxn = ec_dev->cmd_xfer; + if (!xfer_fxn) { + /* + * This error can happen if a communication error happened and + * the EC is trying to use protocol v2, on an underlying + * communication mechanism that does not support v2. + */ + dev_err_once(ec_dev->dev, + "missing EC transfer API, cannot send command\n"); + return -EIO; + } + ret = (*xfer_fxn)(ec_dev, msg); if (msg->result == EC_RES_IN_PROGRESS) { int i; |