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Message-Id: <20240816-smatch-clock-v2-4-c63105db07e8@chromium.org>
Date: Fri, 16 Aug 2024 12:32:02 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>,
Krzysztof HaĆasa <khalasa@...p.pl>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
linux-staging@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v2 4/6] media: tc358746: Move clk_prepare to its own
function
Smatch is very confused by a clk_prepare_enable() being called in an
error-path. Fix this warning by moving the clk_prepare_enable() to its
own function.
drivers/media/i2c/tc358746.c:1631 tc358746_suspend() warn: 'tc358746->refclk' from clk_prepare_enable() not released on lines: 1631.
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
drivers/media/i2c/tc358746.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/tc358746.c b/drivers/media/i2c/tc358746.c
index edf79107adc5..389582420ba7 100644
--- a/drivers/media/i2c/tc358746.c
+++ b/drivers/media/i2c/tc358746.c
@@ -1616,6 +1616,16 @@ static void tc358746_remove(struct i2c_client *client)
pm_runtime_dont_use_autosuspend(sd->dev);
}
+/*
+ * This function has been created just to avoid a smatch warning,
+ * please do not merge it into tc358746_suspend until you have
+ * confirmed that it does not introduce a new warning.
+ */
+static void tc358746_clk_enable(struct tc358746 *tc358746)
+{
+ clk_prepare_enable(tc358746->refclk);
+}
+
static int tc358746_suspend(struct device *dev)
{
struct tc358746 *tc358746 = dev_get_drvdata(dev);
@@ -1626,7 +1636,7 @@ static int tc358746_suspend(struct device *dev)
err = regulator_bulk_disable(ARRAY_SIZE(tc358746_supplies),
tc358746->supplies);
if (err)
- clk_prepare_enable(tc358746->refclk);
+ tc358746_clk_enable(tc358746);
return err;
}
--
2.46.0.184.g6999bdac58-goog
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