linux-kernel - [PATCH 2/4] ASoC: codecs: wm8993: use 'time_left' variable with wait_for_completion

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Date: Tue, 30 Apr 2024 13:54:35 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: alsa-devel@...a-project.org
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	patches@...nsource.cirrus.com,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] ASoC: codecs: wm8993: use 'time_left' variable with wait_for_completion_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_timeout() causing patterns like:

	timeout = wait_for_completion_timeout(...)
	if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Fix to the proper variable type 'unsigned long' while here.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 sound/soc/codecs/wm8993.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 5b788f35e5e4..dcc6301223bc 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -470,7 +470,7 @@ static int _wm8993_set_fll(struct snd_soc_component *component, int fll_id, int
 	struct i2c_client *i2c = to_i2c_client(component->dev);
 	u16 reg1, reg4, reg5;
 	struct _fll_div fll_div;
-	unsigned int timeout;
+	unsigned long time_left;
 	int ret;
 
 	/* Any change? */
@@ -543,19 +543,19 @@ static int _wm8993_set_fll(struct snd_soc_component *component, int fll_id, int
 
 	/* If we've got an interrupt wired up make sure we get it */
 	if (i2c->irq)
-		timeout = msecs_to_jiffies(20);
+		time_left = msecs_to_jiffies(20);
 	else if (Fref < 1000000)
-		timeout = msecs_to_jiffies(3);
+		time_left = msecs_to_jiffies(3);
 	else
-		timeout = msecs_to_jiffies(1);
+		time_left = msecs_to_jiffies(1);
 
 	try_wait_for_completion(&wm8993->fll_lock);
 
 	/* Enable the FLL */
 	snd_soc_component_write(component, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
 
-	timeout = wait_for_completion_timeout(&wm8993->fll_lock, timeout);
-	if (i2c->irq && !timeout)
+	time_left = wait_for_completion_timeout(&wm8993->fll_lock, time_left);
+	if (i2c->irq && !time_left)
 		dev_warn(component->dev, "Timed out waiting for FLL\n");
 
 	dev_dbg(component->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
-- 
2.43.0