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    Subject[PATCH v3 17/22] media: au0828 disable tuner to demod link
    Date
    Change au0828_create_media_graph() to find and disable
    tuner and demod link. This helps avoid an additional
    disable step when tuner is requested by video or audio.

    Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
    ---
    drivers/media/usb/au0828/au0828-core.c | 20 +++++++++++++++++++-
    1 file changed, 19 insertions(+), 1 deletion(-)

    diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
    index 66b44c9..92d22ed 100644
    --- a/drivers/media/usb/au0828/au0828-core.c
    +++ b/drivers/media/usb/au0828/au0828-core.c
    @@ -255,7 +255,7 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
    #ifdef CONFIG_MEDIA_CONTROLLER
    struct media_device *mdev = dev->media_dev;
    struct media_entity *entity;
    - struct media_entity *tuner = NULL, *decoder = NULL;
    + struct media_entity *tuner = NULL, *decoder = NULL, *demod = NULL;
    int i, ret;

    if (!mdev)
    @@ -269,6 +269,9 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
    case MEDIA_ENT_F_ATV_DECODER:
    decoder = entity;
    break;
    + case MEDIA_ENT_F_DTV_DEMOD:
    + demod = entity;
    + break;
    }
    }

    @@ -325,6 +328,21 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
    break;
    }
    }
    +
    + /*
    + * Disable tuner to demod link to avoid disable step
    + * when tuner is requested by video or audio
    + */
    + if (tuner && demod) {
    + struct media_link *link;
    +
    + list_for_each_entry(link, &demod->links, list) {
    + if (link->sink->entity == demod &&
    + link->source->entity == tuner) {
    + media_entity_setup_link(link, 0);
    + }
    + }
    + }
    #endif
    return 0;
    }
    --
    2.5.0
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