linux-kernel - [PATCH 3.18 019/150] ASoC: eukrea-tlv320: Fix of_node

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Message-Id: <20150114072056.739714778@linuxfoundation.org>
Date:	Tue, 13 Jan 2015 23:21:30 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
	Mark Brown <broonie@...nel.org>
Subject: [PATCH 3.18 019/150] ASoC: eukrea-tlv320: Fix of_node_put() call with uninitialized object

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@...e.de>

commit 077661b6ed24e530dabc9db3ab3ae48fbaf19679 upstream.

The of_node_put() call in eukrea_tlv320_probe() may take an
uninitialized pointer, as compiler spotted out:
  sound/soc/fsl/eukrea-tlv320.c:221:14: warning: 'ssi_np' may be used uninitialized in this function [-Wuninitialized]

This patch adds the proper NULL initializations as a fix.
(codec_np is also NULL initialized just for consistency.)

Fixes: 66f232908de2 ('ASoC: eukrea-tlv320: Add DT support')
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/fsl/eukrea-tlv320.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/fsl/eukrea-tlv320.c
+++ b/sound/soc/fsl/eukrea-tlv320.c
@@ -105,7 +105,7 @@ static int eukrea_tlv320_probe(struct pl
 	int ret;
 	int int_port = 0, ext_port;
 	struct device_node *np = pdev->dev.of_node;
-	struct device_node *ssi_np, *codec_np;
+	struct device_node *ssi_np = NULL, *codec_np = NULL;
 
 	eukrea_tlv320.dev = &pdev->dev;
 	if (np) {


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