linux-kernel - [PATCH AUTOSEL 6.6 1/6] ASoC: ti: omap-mcbsp: Fix runtime PM underflow warnings

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Date:   Tue, 14 Nov 2023 22:33:35 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tony Lindgren <tony@...mide.com>,
        Andreas Kemnade <andreas@...nade.info>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, peter.ujfalusi@...il.com,
        jarkko.nikula@...mer.com, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org,
        linux-omap@...r.kernel.org, linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 1/6] ASoC: ti: omap-mcbsp: Fix runtime PM underflow warnings

From: Tony Lindgren <tony@...mide.com>

[ Upstream commit fbb74e56378d8306f214658e3d525a8b3f000c5a ]

We need to check for an active device as otherwise we get warnings
for some mcbsp instances for "Runtime PM usage count underflow!".

Reported-by: Andreas Kemnade <andreas@...nade.info>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Link: https://lore.kernel.org/r/20231030052340.13415-1-tony@atomide.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/ti/omap-mcbsp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/ti/omap-mcbsp.c b/sound/soc/ti/omap-mcbsp.c
index fdabed5133e83..b399d86f22777 100644
--- a/sound/soc/ti/omap-mcbsp.c
+++ b/sound/soc/ti/omap-mcbsp.c
@@ -74,14 +74,16 @@ static int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
 		return 0;
 	}
 
-	pm_runtime_put_sync(mcbsp->dev);
+	if (mcbsp->active)
+		pm_runtime_put_sync(mcbsp->dev);
 
 	r = clk_set_parent(mcbsp->fclk, fck_src);
 	if (r)
 		dev_err(mcbsp->dev, "CLKS: could not clk_set_parent() to %s\n",
 			src);
 
-	pm_runtime_get_sync(mcbsp->dev);
+	if (mcbsp->active)
+		pm_runtime_get_sync(mcbsp->dev);
 
 	clk_put(fck_src);
 
-- 
2.42.0