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    Subject[PATCH 2/6] ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements
    Date
    If codec->control_data is not populated SoC Core assumes we want to
    use regmap, which fails catastrophically, as we don't have one:

    Unable to handle kernel NULL pointer dereference at virtual address 00000080
    pgd = c0004000
    [00000080] *pgd=00000000
    Internal error: Oops: 17 [#1] PREEMPT SMP ARM
    Modules linked in:
    CPU: 1 Not tainted (3.5.0-rc6-00884-g0b2419e-dirty #130)
    PC is at regmap_read+0x10/0x5c
    LR is at hw_read+0x80/0x90
    pc : [<c01a91b8>] lr : [<c0216804>] psr: 60000013

    Signed-off-by: Lee Jones <lee.jones@linaro.org>
    ---
    sound/soc/codecs/ab8500-codec.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c
    index 3c79592..23b4018 100644
    --- a/sound/soc/codecs/ab8500-codec.c
    +++ b/sound/soc/codecs/ab8500-codec.c
    @@ -2406,6 +2406,10 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec)

    /* Setup AB8500 according to board-settings */
    pdata = (struct ab8500_platform_data *)dev_get_platdata(dev->parent);
    +
    + /* Inform SoC Core that we have our own I/O arrangements. */
    + codec->control_data = (void *)true;
    +
    status = ab8500_audio_setup_mics(codec, &pdata->codec->amics);
    if (status < 0) {
    pr_err("%s: Failed to setup mics (%d)!\n", __func__, status);
    --
    1.7.9.5


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