Hi Dan,
Em 07-10-2011 10:26, Dan Carpenter escreveu:
> If "i" is 2 then when we call cx25821_video_mux() we'd end up going
> past the end of the cx25821_boards[dev->board]->input[].
>
> The INPUT() macro obfuscates what's going on in that function so it's
> a bit hard to follow.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> I don't have this hardware, so I can't actually test this. Please
> review this carefully.
>
> diff --git a/drivers/staging/cx25821/cx25821-video.c b/drivers/staging/cx25821/cx25821-video.c
> index 084fc08..acd7c4b 100644
> --- a/drivers/staging/cx25821/cx25821-video.c
> +++ b/drivers/staging/cx25821/cx25821-video.c
> @@ -1312,7 +1312,7 @@ int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
> return err;
> }
>
> - if (i > 2) {
> + if (i >= 2) {
It would be better to add a NUM_INPUT macro (or something like that, defined together
with the INPUT macro) that would do an ARRAY_SIZE(cx25821_boards) and use it here,
instead of a "2" magic number.
Thanks,
Mauro
> dprintk(1, "%s(): -EINVAL\n", __func__);
> return -EINVAL;
> }
> --
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