linux-kernel - [PATCH] ALSA: hda: cs35l56: Call pm_runtime_dont_use

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Message-ID: <20230908101223.2656901-1-rf@opensource.cirrus.com>
Date:   Fri, 8 Sep 2023 11:12:23 +0100
From:   Richard Fitzgerald <rf@...nsource.cirrus.com>
To:     <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linux-kernel@...r.kernel.org>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: [PATCH] ALSA: hda: cs35l56: Call pm_runtime_dont_use_autosuspend()

Driver remove() must call pm_runtime_dont_use_autosuspend().

Drivers that call pm_runtime_use_autosuspend() must disable
it in driver remove(). Unfortunately until recently this was
only mentioned in 1 line in a 900+ line document so most
people hadn't noticed this. It has only recently been added
to the kerneldoc of pm_runtime_use_autosuspend().

Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
Fixes: 2a930a6da8ec ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier")
---
 sound/pci/hda/cs35l56_hda.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c
index 76b9c685560b..9e4976bdb5e0 100644
--- a/sound/pci/hda/cs35l56_hda.c
+++ b/sound/pci/hda/cs35l56_hda.c
@@ -1003,6 +1003,7 @@ void cs35l56_hda_remove(struct device *dev)
 {
 	struct cs35l56_hda *cs35l56 = dev_get_drvdata(dev);
 
+	pm_runtime_dont_use_autosuspend(cs35l56->base.dev);
 	pm_runtime_get_sync(cs35l56->base.dev);
 	pm_runtime_disable(cs35l56->base.dev);
 
-- 
2.30.2