From a8d6aa08dd3e004df6a6e63a61698d834a191ad3 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 13 Oct 2010 10:44:39 +0800 Subject: [PATCH] mfd: Fix off-by-one value range checking for tps6507x If bytes == (TPS6507X_MAX_REGISTER + 1), we have a buffer overflow when doing memcpy(&msg[1], src, bytes). Signed-off-by: Axel Lin Signed-off-by: Samuel Ortiz --- drivers/mfd/tps6507x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/tps6507x.c b/drivers/mfd/tps6507x.c index fc01976..33ba772 100644 --- a/drivers/mfd/tps6507x.c +++ b/drivers/mfd/tps6507x.c @@ -68,7 +68,7 @@ static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg, u8 msg[TPS6507X_MAX_REGISTER + 1]; int ret; - if (bytes > (TPS6507X_MAX_REGISTER + 1)) + if (bytes > TPS6507X_MAX_REGISTER) return -EINVAL; msg[0] = reg; -- 2.7.4