From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-iio@vger.kernel.org
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 3/8] iio: adc: fsl-imx25-gcq: use 'time_left' variable with wait_for_completion_interruptible_timeout()
Date: Mon, 29 Apr 2024 13:33:06 +0200 [thread overview]
Message-ID: <20240429113313.68359-4-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20240429113313.68359-1-wsa+renesas@sang-engineering.com>
There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_interruptible_timeout() causing patterns like:
timeout = wait_for_completion_interruptible_timeout(...)
if (!timeout) return -ETIMEDOUT;
with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/iio/adc/fsl-imx25-gcq.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c
index 68c813de0605..dabc5303d644 100644
--- a/drivers/iio/adc/fsl-imx25-gcq.c
+++ b/drivers/iio/adc/fsl-imx25-gcq.c
@@ -107,7 +107,7 @@ static int mx25_gcq_get_raw_value(struct device *dev,
struct mx25_gcq_priv *priv,
int *val)
{
- long timeout;
+ long time_left;
u32 data;
/* Setup the configuration we want to use */
@@ -120,12 +120,12 @@ static int mx25_gcq_get_raw_value(struct device *dev,
regmap_update_bits(priv->regs, MX25_ADCQ_CR, MX25_ADCQ_CR_FQS,
MX25_ADCQ_CR_FQS);
- timeout = wait_for_completion_interruptible_timeout(
+ time_left = wait_for_completion_interruptible_timeout(
&priv->completed, MX25_GCQ_TIMEOUT);
- if (timeout < 0) {
+ if (time_left < 0) {
dev_err(dev, "ADC wait for measurement failed\n");
- return timeout;
- } else if (timeout == 0) {
+ return time_left;
+ } else if (time_left == 0) {
dev_err(dev, "ADC timed out\n");
return -ETIMEDOUT;
}
--
2.43.0
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next prev parent reply other threads:[~2024-04-29 11:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 11:33 [PATCH 0/8] iio: use 'time_left' instead of 'timeout' with wait_for_*() functions Wolfram Sang
2024-04-29 11:33 ` [PATCH 2/8] iio: adc: exynos_adc: use 'time_left' variable with wait_for_completion_timeout() Wolfram Sang
2024-04-29 11:33 ` Wolfram Sang [this message]
2024-04-30 1:36 ` [PATCH 3/8] iio: adc: fsl-imx25-gcq: use 'time_left' variable with wait_for_completion_interruptible_timeout() Peng Fan
2024-04-29 11:33 ` [PATCH 5/8] iio: adc: stm32-adc: " Wolfram Sang
2024-04-29 11:33 ` [PATCH 6/8] iio: adc: stm32-dfsdm-adc: " Wolfram Sang
2024-04-29 20:06 ` [PATCH 0/8] iio: use 'time_left' instead of 'timeout' with wait_for_*() functions Jonathan Cameron
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