iio:trigger: Use to_iio_trigger() instead of dev_get_drvdata()

Use to_iio_trigger(dev) instead of dev_get_drvdata(dev). Both will return the
trigger which belongs to the device, but the the first on is a bit more
lightweight.

Since this is the last location where we used dev_get_drvdata() for retrieving
the trigger there is no need anymore to assign the the trigger to the devices
drvdata, so we can remove that as well.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 0f582df75a19..ec653fb51d0b 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -45,7 +45,7 @@ static ssize_t iio_trigger_read_name(struct device *dev,
                                      struct device_attribute *attr,
                                      char *buf)
 {
-        struct iio_trigger *trig = dev_get_drvdata(dev);
+        struct iio_trigger *trig = to_iio_trigger(dev);
         return sprintf(buf, "%s\n", trig->name);
 }
 
@@ -436,7 +436,6 @@ struct iio_trigger *iio_trigger_alloc(const char *fmt, ...)
                 trig->dev.type = &iio_trig_type;
                 trig->dev.bus = &iio_bus_type;
                 device_initialize(&trig->dev);
-                dev_set_drvdata(&trig->dev, (void *)trig);
 
                 mutex_init(&trig->pool_lock);
                 trig->subirq_base