test/chmap: Add missing usage text for -s option

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/test/chmap.c b/test/chmap.c
index d73ae7361498004f133f8ce5d9ee30f870baea1f..ad3b305b501c61ea14fa61156ab727f93b2adb53 100644 (file)
--- a/test/chmap.c
+++ b/test/chmap.c
@@ -16,6 +16,7 @@ static void usage(void)
               "       chmap [options] set CH0 CH1 CH2...\n"
               "options:\n"
               "  -D device     Specify PCM device to handle\n"
+              "  -s stream     Specify PCM stream direction (playback/capture)\n"
               "  -f format     PCM format\n"
               "  -c channels   Channels\n"
               "  -r rate       Sample rate\n");