@@ -208,9 +208,15 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
return ERR_PTR(-EINVAL);
if (WARN_ON(!available_las || available_las > CEC_MAX_LOG_ADDRS))
return ERR_PTR(-EINVAL);
+
+ /* If RC Core is not available, remove driver-level capability */
+ if (!IS_REACHABLE(CONFIG_RC_CORE))
+ caps &= ~CEC_CAP_RC;
+
adap = kzalloc(sizeof(*adap), GFP_KERNEL);
if (!adap)
return ERR_PTR(-ENOMEM);
+
strlcpy(adap->name, name, sizeof(adap->name));
adap->phys_addr = CEC_PHYS_ADDR_INVALID;
adap->log_addrs.cec_version = CEC_OP_CEC_VERSION_2_0;
@@ -237,7 +243,6 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
if (!(caps & CEC_CAP_RC))
return adap;
-#if IS_REACHABLE(CONFIG_RC_CORE)
/* Prepare the RC input device */
adap->rc = rc_allocate_device(RC_DRIVER_SCANCODE);
if (!adap->rc) {
@@ -264,9 +269,7 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
adap->rc->priv = adap;
adap->rc->map_name = RC_MAP_CEC;
adap->rc->timeout = MS_TO_NS(100);
-#else
- adap->capabilities &= ~CEC_CAP_RC;
-#endif
+
return adap;
}
EXPORT_SYMBOL_GPL(cec_allocate_adapter);
@@ -285,7 +288,6 @@ int cec_register_adapter(struct cec_adapter *adap,
adap->owner = parent->driver->owner;
adap->devnode.dev.parent = parent;
-#if IS_REACHABLE(CONFIG_RC_CORE)
if (adap->capabilities & CEC_CAP_RC) {
adap->rc->dev.parent = parent;
res = rc_register_device(adap->rc);
@@ -298,15 +300,13 @@ int cec_register_adapter(struct cec_adapter *adap,
return res;
}
}
-#endif
res = cec_devnode_register(&adap->devnode, adap->owner);
if (res) {
-#if IS_REACHABLE(CONFIG_RC_CORE)
/* Note: rc_unregister also calls rc_free */
rc_unregister_device(adap->rc);
adap->rc = NULL;
-#endif
+
return res;
}
@@ -337,11 +337,10 @@ void cec_unregister_adapter(struct cec_adapter *adap)
if (IS_ERR_OR_NULL(adap))
return;
-#if IS_REACHABLE(CONFIG_RC_CORE)
/* Note: rc_unregister also calls rc_free */
rc_unregister_device(adap->rc);
adap->rc = NULL;
-#endif
+
debugfs_remove_recursive(adap->cec_dir);
cec_devnode_unregister(&adap->devnode);
}
@@ -357,9 +356,7 @@ void cec_delete_adapter(struct cec_adapter *adap)
kthread_stop(adap->kthread);
if (adap->kthread_config)
kthread_stop(adap->kthread_config);
-#if IS_REACHABLE(CONFIG_RC_CORE)
rc_free_device(adap->rc);
-#endif
kfree(adap);
}
EXPORT_SYMBOL_GPL(cec_delete_adapter);
If a user specifies the use of RC as a capability, they should really be enabling RC Core code. If they do not we WARN() them of this and disable the capability for them. Once we know RC Core code has not been enabled, we can update the user's capabilities and use them as a term of reference for other RC-only calls. This is preferable to having ugly #ifery scattered throughout C code. Most of the functions are actually safe to call, since they sensibly check for a NULL RC pointer before they attempt to deference it. Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/media/cec/cec-core.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) -- 2.9.3