linux-kernel - [PATCH 5.2 001/162] ASoC: simple_card_utils.h: care NULL dai at asoc_simple_debug

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Message-Id: <20190827072738.194602192@linuxfoundation.org>
Date:   Tue, 27 Aug 2019 09:48:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.2 001/162] ASoC: simple_card_utils.h: care NULL dai at asoc_simple_debug_dai()

[ Upstream commit 52db6685932e326ed607644ab7ebdae8c194adda ]

props->xxx_dai might be NULL when DPCM.
This patch cares it for debug.

Fixes: commit 0580dde59438 ("ASoC: simple-card-utils: add asoc_simple_debug_info()")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Link: https://lore.kernel.org/r/87o922gw4u.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/sound/simple_card_utils.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 3429888347e7c..b3609e4c46e0f 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -149,6 +149,10 @@ inline void asoc_simple_debug_dai(struct asoc_simple_priv *priv,
 {
 	struct device *dev = simple_priv_to_dev(priv);
 
+	/* dai might be NULL */
+	if (!dai)
+		return;
+
 	if (dai->name)
 		dev_dbg(dev, "%s dai name = %s\n",
 			name, dai->name);
-- 
2.20.1