diff mbox series

[v2,4/6] media: tc358746: Move clk_prepare to its own function

Message ID 20240816-smatch-clock-v2-4-c63105db07e8@chromium.org
State Accepted
Commit 157c73682dc0d0913b2f4543d5589151587a81d7
Headers show
Series media: Fix last smatch warnings | expand

Commit Message

Ricardo Ribalda Aug. 16, 2024, 12:32 p.m. UTC 
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@chromium.org>
---
 drivers/media/i2c/tc358746.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
diff mbox series

Patch

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;
 }