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    Subject[PATCH 3.19.y-ckt 078/251] ASoC: tas2552: Fix kernel crash when the codec is loaded but not part of a card
    Date
    3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Peter Ujfalusi <peter.ujfalusi@ti.com>

    commit 80ba2669ec8c3e6517aa935001f6cb8809bf3df4 upstream.

    If the card is not part of any card the tas_data->codec is NULL since it is
    set only during snd_soc_codec_driver.probe, which is not yet called.

    Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
    Signed-off-by: Mark Brown <broonie@kernel.org>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    sound/soc/codecs/tas2552.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
    index ae23acd..a073dc9 100644
    --- a/sound/soc/codecs/tas2552.c
    +++ b/sound/soc/codecs/tas2552.c
    @@ -120,6 +120,9 @@ static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown)
    {
    u8 cfg1_reg;

    + if (!tas_data->codec)
    + return;
    +
    if (sw_shutdown)
    cfg1_reg = 0;
    else
    --
    1.9.1


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