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-rw-r--r--src/signal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/signal.c b/src/signal.c
index 6384384..8402591 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -46,6 +46,7 @@ struct signal_handler {
* \param[in] subsys Subsystem number
* \param[in] cbfn Callback function
* \param[in] data Data passed through to callback
+ * \returns 0 on success; negative in case of error
*/
int osmo_signal_register_handler(unsigned int subsys,
osmo_signal_cbfn *cbfn, void *data)