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    Subject[patch 035/108] V4L: pvrusb2: Re-fix hardware scaling on video standard change

    2.6.30-stable review patch. If anyone has any objections, please let us know.


    From: Mike Isely <>

    (cherry picked from commit a6862da2f3c7ce3ec6644958bc8937b630b9e2c1)

    The cx25840 module's VBI initialization logic uses the current video
    standard as part of its internal algorithm. This therefore means that
    we probably need to make sure that the correct video standard has been
    set before initializing VBI. (Normally we would not care about VBI,
    but as described in an earlier changeset, VBI must be initialized
    correctly on the cx25840 in order for the chip's hardware scaler to
    operate correctly.)

    It's kind of messy to force the video standard to be set before
    initializing VBI (mainly because we can't know what the app really
    wants that early in the initialization process). So this patch does
    the next best thing: VBI is re-initialized after any point where the
    video standard has been set.

    Signed-off-by: Mike Isely <>
    Signed-off-by: Mauro Carvalho Chehab <>
    Signed-off-by: Michael Krufky <>
    Signed-off-by: Greg Kroah-Hartman <>

    drivers/media/video/pvrusb2/pvrusb2-hdw.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
    +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
    @@ -2950,6 +2950,7 @@ static void pvr2_subdev_update(struct pv
    vs = hdw->std_mask_cur;
    v4l2_device_call_all(&hdw->v4l2_dev, 0,
    core, s_std, vs);
    + pvr2_hdw_cx25840_vbi_hack(hdw);
    hdw->tuner_signal_stale = !0;
    hdw->cropcap_stale = !0;

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