From 1ab774e049085da6facfaf3b24d54158c3f0f5b3 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 5 Feb 2007 13:07:04 +0100 Subject: [PATCH] [ALSA] snd-ak4114: Fix two array overflows Fix the handling of the TXCSB registers cache. There was one array overflow in reg_write() and one in snd_ak4114_reg_write(). Thanks to David Binderman for reporting the latter. The second overflow probably doesn't matter much, given that the function snd_ak4114_reg_write() appears to be never called. I wonder why it exists and why it is exported. Signed-off-by: Jean Delvare Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/i2c/other/ak4114.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/sound/i2c/other/ak4114.c b/sound/i2c/other/ak4114.c index d2b17c83fd33..adbfd5884d06 100644 --- a/sound/i2c/other/ak4114.c +++ b/sound/i2c/other/ak4114.c @@ -42,8 +42,8 @@ static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char va ak4114->write(ak4114->private_data, reg, val); if (reg <= AK4114_REG_INT1_MASK) ak4114->regmap[reg] = val; - else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4) - ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val; + else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4) + ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val; } static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg) @@ -127,7 +127,8 @@ void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char if (reg <= AK4114_REG_INT1_MASK) reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val); else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4) - reg_write(chip, reg, (chip->txcsb[reg] & ~mask) | val); + reg_write(chip, reg, + (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val); } void snd_ak4114_reinit(struct ak4114 *chip) -- 2.20.1