G_STD on radio devices

[Hans Verkuil]

Hi Mauro,

I was playing with a radio-only device yesterday when I noticed that it 
somehow implemented G_STD. It turns out to be a side-effect of the G_STD 
implementation in v4l2-ioctl.c:

        case VIDIOC_G_STD:
        {
                v4l2_std_id *id = arg;

                ret = 0;
                /* Calls the specific handler */
                if (ops->vidioc_g_std)
                        ret = ops->vidioc_g_std(file, fh, id);
                else
                        *id = vfd->current_norm;
                break;
        }

I was thinking of fixing this by changing it as follows:

        else if (vfd->tvnorms == 0)
                return -EINVAL;
        else
                *id = vfd->current_norm;

Is this the correct solution? Or do you have a better idea?

Regards,

        Hans

-- 
Hans Verkuil - video4linux developer - sponsored by TANDBERG
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