From 8d0d5c3fa16f050024ff13df106b70466aacbf3b Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Fri, 6 Sep 2019 22:14:14 +0900
Subject: [PATCH] ALSA: firewire-lib: remove WARN_ON() at destruction of AMDTP domain
Git-commit: 8d0d5c3fa16f050024ff13df106b70466aacbf3b
Patch-mainline: v5.4-rc1
References: jsc#SLE-16518

The destructor of AMDTP domain has WARN_ON() for the list of associated
AMDTP stream. Although this reminds a case that developers forget to
program consumer drivers to stop AMDTP domain, it hits when AMDTP domain
is not initialized yet. This occurs when initialization of sound card
fails as well and it's superfluous.

This commit removes the WARN_ON. Although the API to AMDTP domain does
nothing, it's left for future usage.

Fixes: 3ec3d7a3ff106 ("ALSA: firewire-lib: add AMDTP domain structure to handle several isoc contexts")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20190906131414.15370-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/firewire/amdtp-stream.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 88270257e896..e50e28f77e74 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -1153,7 +1153,8 @@ EXPORT_SYMBOL_GPL(amdtp_domain_init);
  */
 void amdtp_domain_destroy(struct amdtp_domain *d)
 {
-	WARN_ON(!list_empty(&d->streams));
+	// At present nothing to do.
+	return;
 }
 EXPORT_SYMBOL_GPL(amdtp_domain_destroy);
 
-- 
2.16.4