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Subject[PATCH 2/8] iio: adc: exynos_adc: use 'time_left' variable with wait_for_completion_timeout()
Date
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.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/iio/adc/exynos_adc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 614de9644800..78fada4b7b1c 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -538,7 +538,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
long mask)
{
struct exynos_adc *info = iio_priv(indio_dev);
- unsigned long timeout;
+ unsigned long time_left;
int ret;

if (mask == IIO_CHAN_INFO_SCALE) {
@@ -562,9 +562,9 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
if (info->data->start_conv)
info->data->start_conv(info, chan->address);

- timeout = wait_for_completion_timeout(&info->completion,
- EXYNOS_ADC_TIMEOUT);
- if (timeout == 0) {
+ time_left = wait_for_completion_timeout(&info->completion,
+ EXYNOS_ADC_TIMEOUT);
+ if (time_left == 0) {
dev_warn(&indio_dev->dev, "Conversion timed out! Resetting\n");
if (info->data->init_hw)
info->data->init_hw(info);
@@ -583,7 +583,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
{
struct exynos_adc *info = iio_priv(indio_dev);
- unsigned long timeout;
+ unsigned long time_left;
int ret;

mutex_lock(&info->lock);
@@ -597,9 +597,9 @@ static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
/* Select the ts channel to be used and Trigger conversion */
info->data->start_conv(info, ADC_S3C2410_MUX_TS);

- timeout = wait_for_completion_timeout(&info->completion,
- EXYNOS_ADC_TIMEOUT);
- if (timeout == 0) {
+ time_left = wait_for_completion_timeout(&info->completion,
+ EXYNOS_ADC_TIMEOUT);
+ if (time_left == 0) {
dev_warn(&indio_dev->dev, "Conversion timed out! Resetting\n");
if (info->data->init_hw)
info->data->init_hw(info);
--
2.43.0

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