On Mon, May 06, 2024 at 10:44:08AM +0800, qiurui wrote:
> Fix bzero buffer before read()
why would we want to do that?
> Signed-off-by: qiurui <qiurui@xxxxxxxxxx>
> ---
> Documentation/usb/gadget_hid.rst | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/usb/gadget_hid.rst b/Documentation/usb/gadget_hid.rst
> index e623416de4f1..c4ee81a6b48e 100644
> --- a/Documentation/usb/gadget_hid.rst
> +++ b/Documentation/usb/gadget_hid.rst
> @@ -410,6 +410,7 @@ Sample code::
> }
>
> if (FD_ISSET(fd, &rfds)) {
> + bzero(buf, SIZE);
> cmd_len = read(fd, buf, BUF_LEN - 1);
> printf("recv report:");
> for (i = 0; i < cmd_len; i++)
> @@ -419,6 +420,7 @@ Sample code::
>
> if (FD_ISSET(STDIN_FILENO, &rfds)) {
> memset(report, 0x0, sizeof(report));
> + bzero(buf, SIZE);
> cmd_len = read(STDIN_FILENO, buf, BUF_LEN - 1);
>
> if (cmd_len == 0)
> --
> 2.34.1
>
>
