Don't set brightness if parsing target value failed

1 files changed, 2 insertions, 1 deletions

diff --git a/brightness.cpp b/brightness.cpp
index c06427d..9fe8221 100644
--- a/brightness.cpp
+++ b/brightness.cpp
@@ -110,7 +110,7 @@ private:
 	}
 
 public:
-	int increment() const { return 100; }
+	int increment() const { return 1000; }
 
 	bool suitable() {
 		struct stat st;
@@ -229,6 +229,7 @@ int main(int argc,char **argv){
 			int n = strtol(argv[1], &endp, 10);
 			if (argv[1][0] == '\0' || *endp != '\0') {
 				std::cerr << "Invalid number '" << argv[1] << "'" << std::endl;
+				return 1;
 			}
 			backlight->set_brightness(backlight->convert_absolute_brightness(n));
 		}