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-rw-r--r--include/wlr/backend/session.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/wlr/backend/session.h b/include/wlr/backend/session.h
index 06c23d73..7c0d3b22 100644
--- a/include/wlr/backend/session.h
+++ b/include/wlr/backend/session.h
@@ -96,7 +96,7 @@ void wlr_session_close_file(struct wlr_session *session,
*/
bool wlr_session_change_vt(struct wlr_session *session, unsigned vt);
-size_t wlr_session_find_gpus(struct wlr_session *session,
+ssize_t wlr_session_find_gpus(struct wlr_session *session,
size_t ret_len, struct wlr_device **ret);
#endif