gpiodetect: handle unrecognized options

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/gpiodetect.c b/gpiodetect.c
index 8d5821947ae2abafc628183f16b6cdf8871b7d44..a5b87f37bd9c29bc5f7e824b8ff65ab710debcae 100644 (file)
--- a/gpiodetect.c
+++ b/gpiodetect.c
@@ -40,6 +40,10 @@ int main(int argc, char **argv)
                        printf("Usage: %s\n", get_progname());
                        printf("List all GPIO chips\n");
                        exit(EXIT_SUCCESS);
+               case '?':
+                       die("try %s --help", get_progname());
+               default:
+                       abort();
                }
        }