Patch "ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback" has been added to the 4.14-stable tree

Patch "ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-img-parallel-out-add-pm_runtime_get-put-to-set_fmt-callback.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Wed Dec 20 18:17:52 CET 2017
From: Ed Blake <ed.blake@sondrel.com>
Date: Mon, 2 Oct 2017 11:00:33 +0100
Subject: ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@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;
 }


Patches currently in stable-queue which might be from ed.blake@sondrel.com are

queue-4.14/asoc-img-parallel-out-add-pm_runtime_get-put-to-set_fmt-callback.patch