diff options
Diffstat (limited to 'drivers/firmware/arm_scmi/driver.c')
| -rw-r--r-- | drivers/firmware/arm_scmi/driver.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 3eb19ed6f148..a9f70e6e58ac 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -85,6 +85,7 @@ struct scmi_xfers_info { * @gid: A reference for per-protocol devres management. * @users: A refcount to track effective users of this protocol. * @priv: Reference for optional protocol private data. + * @version: Protocol version supported by the platform as detected at runtime. * @ph: An embedded protocol handle that will be passed down to protocol * initialization code to identify this instance. * @@ -97,6 +98,7 @@ struct scmi_protocol_instance { void *gid; refcount_t users; void *priv; + unsigned int version; struct scmi_protocol_handle ph; }; @@ -1392,15 +1394,17 @@ static int version_get(const struct scmi_protocol_handle *ph, u32 *version) * * @ph: A reference to the protocol handle. * @priv: The private data to set. + * @version: The detected protocol version for the core to register. * * Return: 0 on Success */ static int scmi_set_protocol_priv(const struct scmi_protocol_handle *ph, - void *priv) + void *priv, u32 version) { struct scmi_protocol_instance *pi = ph_to_pi(ph); pi->priv = priv; + pi->version = version; return 0; } @@ -1849,6 +1853,12 @@ scmi_alloc_init_protocol_instance(struct scmi_info *info, devres_close_group(handle->dev, pi->gid); dev_dbg(handle->dev, "Initialized protocol: 0x%X\n", pi->proto->id); + if (pi->version > proto->supported_version) + dev_warn(handle->dev, + "Detected UNSUPPORTED higher version 0x%X for protocol 0x%X." + "Backward compatibility is NOT assured.\n", + pi->version, pi->proto->id); + return pi; clean: |