linux-kernel - [PATCH v2] ASoC: Intel: fix possible acpi enumeration panic

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Date:	Mon, 15 Dec 2014 16:15:04 -0800
From:	Kevin Strasser <kevin.strasser@...ux.intel.com>
To:	alsa-devel@...a-project.org
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Mark Brown <broonie@...nel.org>,
	Mengdong Lin <mengdong.lin@...el.com>,
	Yang Fang <yang.a.fang@...el.com>,
	linux-kernel@...r.kernel.org,
	Kevin Strasser <kevin.strasser@...el.com>
Subject: [PATCH v2] ASoC: Intel: fix possible acpi enumeration panic

A crash can occur on some platforms where adsp is enumerated but codec is not
matched. Define codec_id as a pointer intead of an array so that it gets
initialized to NULL for the terminating element of sst_acpi_bytcr[] and
sst_acpi_chv[].

Signed-off-by: Kevin Strasser <kevin.strasser@...ux.intel.com>
---
 sound/soc/intel/sst/sst_acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/sst/sst_acpi.c b/sound/soc/intel/sst/sst_acpi.c
index 31124aa..87b5090 100644
--- a/sound/soc/intel/sst/sst_acpi.c
+++ b/sound/soc/intel/sst/sst_acpi.c
@@ -43,7 +43,7 @@
 #include "sst.h"
 
 struct sst_machines {
-	char codec_id[32];
+	char *codec_id;
 	char board[32];
 	char machine[32];
 	void (*machine_quirk)(void);
-- 
1.9.1

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