From: Vasiliy Kulikov <[email protected]> put_user() may fail, if so return -EFAULT.
Signed-off-by: Vasiliy Kulikov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/cs5535_gpio/cs5535_gpio.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) 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++; } -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
