[PATCH v2 1/8] iio: proximity: ping: pass reference to IIO device via call-stack
From: Alexandru Ardelean <hidden>
Date: 2020-05-14 13:17:54
Also in:
linux-iio, lkml
Subsystem:
iio subsystem and drivers, parallax ping iio sensor driver, the rest · Maintainers:
Jonathan Cameron, Andreas Klinger, Linus Torvalds
Since there will be some changes to how iio_priv_to_dev() is implemented, it could be that the helper becomes a bit slower, as it will be hidden away in the IIO core. For this driver, the IIO device can be passed directly as a parameter to the ping_read() function, thus making it immune to the change of iio_priv_to_dev(). Signed-off-by: Alexandru Ardelean <redacted> --- drivers/iio/proximity/ping.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/proximity/ping.c b/drivers/iio/proximity/ping.c
index 12b893c5b0ee..ddc43a5a2ef8 100644
--- a/drivers/iio/proximity/ping.c
+++ b/drivers/iio/proximity/ping.c@@ -89,14 +89,13 @@ static irqreturn_t ping_handle_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static int ping_read(struct ping_data *data) +static int ping_read(struct iio_dev *indio_dev, struct ping_data *data) { int ret; ktime_t ktime_dt; s64 dt_ns; u32 time_ns, distance_mm; struct platform_device *pdev = to_platform_device(data->dev); - struct iio_dev *indio_dev = iio_priv_to_dev(data); /* * just one read-echo-cycle can take place at a time
@@ -236,7 +235,7 @@ static int ping_read_raw(struct iio_dev *indio_dev, switch (info) { case IIO_CHAN_INFO_RAW: - ret = ping_read(data); + ret = ping_read(indio_dev, data); if (ret < 0) return ret; *val = ret;
--
2.17.1
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