From 1c412a321590d4a01698b85710e29b1e575de1a7 Mon Sep 17 00:00:00 2001
From: Stefan Popa <stefan.popa@analog.com>
Date: Mon, 20 Aug 2018 17:53:43 +0300
Subject: [PATCH] iio: adxl372: Provide validate_trigger and validate_device
callbacks
This patch provides a validate_device callback for the trigger which makes
sure that other devices are rejected.
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
drivers/iio/accel/adxl372.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index d2fdc7581fe05..5a039ba0b3ebc 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -762,11 +762,24 @@ static int adxl372_dready_trig_set_state(struct iio_trigger *trig,
return adxl372_set_interrupts(st, mask, 0);
}
+static int adxl372_validate_trigger(struct iio_dev *indio_dev,
+ struct iio_trigger *trig)
+{
+ struct adxl372_state *st = iio_priv(indio_dev);
+
+ if (st->dready_trig != trig)
+ return -EINVAL;
+
+ return 0;
+}
+
static const struct iio_trigger_ops adxl372_trigger_ops = {
+ .validate_device = &iio_trigger_validate_own_device,
.set_trigger_state = adxl372_dready_trig_set_state,
};
static const struct iio_info adxl372_info = {
+ .validate_trigger = &adxl372_validate_trigger,
.read_raw = adxl372_read_raw,
.debugfs_reg_access = &adxl372_reg_access,
.hwfifo_set_watermark = adxl372_set_watermark,
--
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