On Wed, Jan 08, 2014 at 01:37:55PM -0800, Christopher Heiny wrote:
> This is a trivial change to use snprintf rather than sprintf while building
> the diagnostic output buffer.
>
> Signed-off-by: Christopher Heiny <[email protected]>
> Cc: Dmitry Torokhov <[email protected]>
> Cc: Benjamin Tissoires <[email protected]>
>
> ---
>
> drivers/input/rmi4/rmi_i2c.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/rmi4/rmi_i2c.c b/drivers/input/rmi4/rmi_i2c.c
> index b33074c..43b0e53 100644
> --- a/drivers/input/rmi4/rmi_i2c.c
> +++ b/drivers/input/rmi4/rmi_i2c.c
> @@ -157,7 +157,7 @@ static int copy_to_debug_buf(struct device *dev, struct
> rmi_i2c_data *data,
> temp = data->debug_buf;
>
> for (i = 0; i < len; i++) {
> - n = sprintf(temp, " %02x", buf[i]);
> + n = snprintf(temp, 3, " %02x", buf[i]);
> temp += n;
> }
>
I do not think it is right, as if there is truncation you'd move too
far. In any case please replace the while loop with:
snprintf(data->debug_buf, data->debug_buf_size, "%*ph", len, buf);
Thanks.
--
Dmitry
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