i2c-tools: fix 'i2cdetect -l'
Calling 'i2cdetect -l' only displays usage and exits. Fix it by
correctly parsing command-line arguments.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c
index 03bb039..2805cf3 100644
--- a/miscutils/i2c_tools.c
+++ b/miscutils/i2c_tools.c
@@ -1284,13 +1284,16 @@
unsigned opts;
opt_complementary = "q--r:r--q:" /* mutually exclusive */
- "-1:?3"; /* from 1 to 3 args */
+ "?3"; /* up to 3 args */
opts = getopt32(argv, optstr);
argv += optind;
if (opts & opt_l)
list_i2c_busses_and_exit();
+ if (!argv[0])
+ bb_show_usage();
+
bus_num = i2c_bus_lookup(argv[0]);
fd = i2c_dev_open(bus_num);
get_funcs_matrix(fd, &funcs);
