displayd: Do not fail when debugging with /dev/null

diff --git a/src/displayd/displayd.c b/src/displayd/displayd.c
index f7738c868d2a5be5574024d40adef0894558af08..157d8b73b5c61343ad599b4f26b7b74989778868 100644 (file)
--- a/src/displayd/displayd.c
+++ b/src/displayd/displayd.c
@@ -403,7 +403,7 @@ int main(int argc, char *argv[])
        }
 
        sercom = uoled_sercom_init(tty, NULL);
-       if (strcmp(tty, "/dev/null") != 0 && sercom != NULL) {
+       if (strcmp(tty, "/dev/null") == 0 || sercom != NULL) {
        // :wq
                printf("displayd: init serial communication OK\n");
        } else {