From c75b96be49f3655554455c6a5d48fa7f6ba326b4 Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Fri, 7 Dec 2018 18:41:02 +0900
Subject: [PATCH] axfer: print help text of list subcommand

This commit adds help text of list subcommand.

This help text can not be in execution of alias (aplay/arecord) due to
program design.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 axfer/subcmd-list.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/axfer/subcmd-list.c b/axfer/subcmd-list.c
index 1ea9669..98a7cf3 100644
--- a/axfer/subcmd-list.c
+++ b/axfer/subcmd-list.c
@@ -193,7 +193,14 @@ static int list_pcms(snd_pcm_stream_t direction)
 
 static void print_help(void)
 {
-	printf("help for list sub-command.\n");
+	printf(
+"Usage:\n"
+"  axfer list DIRECTION TARGET\n"
+"\n"
+"  where:\n"
+"    DIRECTION = capture | playback\n"
+"    TARGET = device | pcm\n"
+	);
 }
 
 // Backward compatibility to aplay(1).