From a03129b1857d4e38e05c249f645f09d0959c2229 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Tue, 28 Jan 2014 22:06:54 +0100 Subject: [PATCH] Fix bogus usage message in pio tool. Signed-off-by: Michal Suchanek Signed-off-by: Henrik Nordstrom --- pio.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/pio.c b/pio.c index e48a660..7ef4514 100644 --- a/pio.c +++ b/pio.c @@ -167,8 +167,11 @@ static const char *argv0; static void usage(int rc ) { - - fprintf(stderr, "usage: %s [-m|-i input] [-o output] pin..\n", argv0); + + fprintf(stderr, "usage: %s -m|-i input [-o output] pin..\n", argv0); + fprintf(stderr," -m mmap - read pin state from system\n"); + fprintf(stderr," -i read pin state from file\n"); + fprintf(stderr," -o save pin state data to file\n"); fprintf(stderr," print Show all pins\n"); fprintf(stderr," Pxx Show pin\n"); fprintf(stderr," Pxx Configure pin\n"); @@ -179,7 +182,7 @@ static void usage(int rc ) fprintf(stderr, "\n mode 0-7, 0=input, 1=ouput, 2-7 I/O function\n"); fprintf(stderr, " pull 0=none, 1=up, 2=down\n"); fprintf(stderr, " drive 0-3, I/O drive level\n"); - + exit(rc); }