From: Axel Lin <axel.lin@ingics.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Brian Austin <brian.austin@cirrus.com>,
Georgi Vlaev <joe@nucleusys.com>,
alsa-devel@alsa-project.org, Liam Girdwood <lrg@ti.com>
Subject: [PATCH] ASoC: cs42l52: Fix off-by-one boundary checking for cs42l52_get_clk()
Date: Sun, 16 Dec 2012 10:11:29 +0800 [thread overview]
Message-ID: <1355623889.9994.1.camel@phoenix> (raw)
The caller uses the return value of cs42l52_get_clk as array index,
the valid array index is 0 .. ARRAY_SIZE(clk_map_table) - 1.
Thus we need to ensure ret is less than ARRAY_SIZE(clk_map_table).
Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
sound/soc/codecs/cs42l52.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c
index 99bb1c6..66817f6 100644
--- a/sound/soc/codecs/cs42l52.c
+++ b/sound/soc/codecs/cs42l52.c
@@ -749,7 +749,7 @@ static int cs42l52_get_clk(int mclk, int rate)
}
}
}
- if (ret > ARRAY_SIZE(clk_map_table))
+ if (ret >= ARRAY_SIZE(clk_map_table))
return -EINVAL;
return ret;
}
--
1.7.9.5
next reply other threads:[~2012-12-16 2:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-16 2:11 Axel Lin [this message]
2012-12-16 14:10 ` [PATCH] ASoC: cs42l52: Fix off-by-one boundary checking for cs42l52_get_clk() Axel Lin
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