[PATCH 4.14 131/159] ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Ed Blake <ed.bl...@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.bl...@sondrel.com>
Signed-off-by: Mark Brown <broo...@kernel.org>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 sound/soc/img/img-parallel-out.c |    2 ++
 1 file changed, 2 insertions(+)

--- 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 sn
                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;
 }