When help ('?') option is passed to the command, the help text
printed but not from '?' switch case of getopt_long() but as a
invalid argument as below. Fix this by adding '?' to opt_String
of getopt_long().
root@am437x-evm:~# ./iio_generic_buffer -?
./iio_generic_buffer: invalid option -- '?'
Usage: generic_buffer [options]...
Capture, convert and output data from IIO device buffer
-a Auto-activate all available channels
...
Signed-off-by: Mugunthan V N <mugunthanvnm@xxxxxx>
---
tools/iio/iio_generic_buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c
index f39c0e9..85e2329 100644
--- a/tools/iio/iio_generic_buffer.c
+++ b/tools/iio/iio_generic_buffer.c
@@ -352,7 +352,7 @@ int main(int argc, char **argv)
register_cleanup();
- while ((c = getopt_long(argc, argv, "ac:egl:n:N:t:T:w:", longopts, NULL)) != -1) {
+ while ((c = getopt_long(argc, argv, "ac:egl:n:N:t:T:w:?", longopts, NULL)) != -1) {
switch (c) {
case 'a':
autochannels = AUTOCHANNELS_ENABLED;
--
2.10.0.129.g35f6318
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