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Allow NULL cb_handle in libx52_hotplug_register_callback 

This allows the caller to register a callback and forget about it. This
is useful in cases where a particular callback needs to be run
everytime, and there is no point in deregistering it until the
application terminates, at which point `libx52_hotplug_exit` will take
care of the cleanup.
debian-packaging
nirenjan 2020-04-18 01:28:12 -07:00
parent 79b1f930b8
commit cb050f2c30
1 changed files with 4 additions and 1 deletions
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5
lib/libx52/x52_core.c
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@ -328,7 +328,10 @@ int libx52_hotplug_register_callback(libx52_hotplug_service *svc,
/* Insert the node into the callbacks list */ /* Insert the node into the callbacks list */
svc->callbacks[i] = hdl; svc->callbacks[i] = hdl;
*cb_handle = hdl; if (cb_handle != NULL) {
*cb_handle = hdl;
}
return LIBX52_SUCCESS; return LIBX52_SUCCESS;
} }