From 01ebd764dab26b3064b0c73ddcf726dd4b41485a Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Mon, 17 Jan 2011 13:08:49 +0300 Subject: [PATCH] staging: cs5535_gpio: check put_user() return code put_user() may fail, if so return -EFAULT. Signed-off-by: Vasiliy Kulikov Signed-off-by: Greg Kroah-Hartman --- drivers/staging/cs5535_gpio/cs5535_gpio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/cs5535_gpio/cs5535_gpio.c b/drivers/staging/cs5535_gpio/cs5535_gpio.c index 0cf1e5f..b25f9d1 100644 --- a/drivers/staging/cs5535_gpio/cs5535_gpio.c +++ b/drivers/staging/cs5535_gpio/cs5535_gpio.c @@ -146,7 +146,8 @@ static ssize_t cs5535_gpio_read(struct file *file, char __user *buf, /* add a line-feed if there is room */ if ((i == ARRAY_SIZE(rm)) && (count < len)) { - put_user('\n', buf + count); + if (put_user('\n', buf + count)) + return -EFAULT; count++; } -- 2.7.4