[alsa-devel] [PATCH] ASoC: cs42l52: Fix off-by-one boundary checking for cs42l52_get_clk()

[Axel Lin]

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 at 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