From c70458890ff15d858bd347fa9f563818bcd6e457 Mon Sep 17 00:00:00 2001
From: Ed Blake <ed.blake@sondrel.com>
Date: Mon, 2 Oct 2017 11:00:33 +0100
Subject: [PATCH] ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback
Git-commit: c70458890ff15d858bd347fa9f563818bcd6e457
Patch-mainline: v4.15-rc1
References: bsc#1051510

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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;
 }