[PATCH 3/7] iio: hw_consumer: simplify devm_iio_hw_consumer_alloc

Yicong Yang
2021-04-08T11:41:01Z

Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
---
drivers/iio/buffer/industrialio-hw-consumer.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/drivers/iio/buffer/industrialio-hw-consumer.c b/drivers/iio/buffer/industrialio-hw-consumer.c
index f2d2778..87d9aab 100644
--- a/drivers/iio/buffer/industrialio-hw-consumer.c
+++ b/drivers/iio/buffer/industrialio-hw-consumer.c
@@ -137,9 +137,9 @@ void iio_hw_consumer_free(struct iio_hw_consumer *hwc)
}
EXPORT_SYMBOL_GPL(iio_hw_consumer_free);

-static void devm_iio_hw_consumer_release(struct device *dev, void *res)
+static void devm_iio_hw_consumer_release(void *iio_hwc)
{
- iio_hw_consumer_free(*(struct iio_hw_consumer **)res);
+ iio_hw_consumer_free(iio_hwc);
}

/**
@@ -153,20 +153,17 @@ static void devm_iio_hw_consumer_release(struct device *dev, void *res)
*/
struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev)
{
- struct iio_hw_consumer **ptr, *iio_hwc;
-
- ptr = devres_alloc(devm_iio_hw_consumer_release, sizeof(*ptr),
- GFP_KERNEL);
- if (!ptr)
- return NULL;
+ struct iio_hw_consumer *iio_hwc;
+ int ret;

iio_hwc = iio_hw_consumer_alloc(dev);
- if (IS_ERR(iio_hwc)) {
- devres_free(ptr);
- } else {
- *ptr = iio_hwc;
- devres_add(dev, ptr);
- }
+ if (IS_ERR(iio_hwc))
+ return iio_hwc;
+
+ ret = devm_add_action_or_reset(dev, devm_iio_hw_consumer_release,
+ iio_hwc);
+ if (ret)
+ return ERR_PTR(ret);

return iio_hwc;
}
--
2.8.1