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    Subject[PATCH AUTOSEL for 4.14 37/60] ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback
    Date
    From: Ed Blake <ed.blake@sondrel.com>

    [ Upstream commit c70458890ff15d858bd347fa9f563818bcd6e457 ]

    Add pm_runtime_get_sync and pm_runtime_put calls to set_fmt callback
    function. This fixes a bus error during boot when CONFIG_SUSPEND is
    defined when this function gets called while the device is runtime
    disabled and device registers are accessed while the clock is disabled.

    Signed-off-by: Ed Blake <ed.blake@sondrel.com>
    Signed-off-by: Mark Brown <broonie@kernel.org>
    Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
    ---
    sound/soc/img/img-parallel-out.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c
    index 23b0f0f6ec9c..2fc8a6372206 100644
    --- a/sound/soc/img/img-parallel-out.c
    +++ b/sound/soc/img/img-parallel-out.c
    @@ -164,9 +164,11 @@ static int img_prl_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
    return -EINVAL;
    }

    + pm_runtime_get_sync(prl->dev);
    reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
    reg = (reg & ~IMG_PRL_OUT_CTL_EDGE_MASK) | control_set;
    img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
    + pm_runtime_put(prl->dev);

    return 0;
    }
    --
    2.11.0
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