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tools: iio: iio_generic_buffer: fix argument '?' option 

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@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Mugunthan V N 2016-09-21 22:27:58 +05:30 committed by Jonathan Cameron
parent 59dc1c8619
commit 44c5ba96ec
1 changed files with 1 additions and 1 deletions
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2
tools/iio/iio_generic_buffer.c
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@ -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;