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[linux-dvb] broken ioctls return codes ...



  Hi,

While hacking dvb support into the v4l-info utility I noticed that (some
of?) the frontend drivers don't return a error when a unknown ioctl is
called.  That leads to effects like this one:

$ ./v4l-info /dev/dvb/adapter0/frontend0

### v4l2 device info [/dev/dvb/adapter0/frontend0] ###
general info
    VIDIOC_QUERYCAP
        driver                  : ""
        card                    : ""
        bus_info                : ""
        version                 : 0.0.0
        capabilities            : 0x0 []

That's not nice ...

  Gerd

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