The iio_read_avail_channel_raw() inkern interface now allocates a copy
of the available info buffer that must be freed after use. To do so,
free the buffer in the consumers read_avail_relese_resource callback.
Signed-off-by: Matteo Martelli <matteomartelli3@xxxxxxxxx>
---
drivers/iio/afe/iio-rescale.c | 8 ++++++++
drivers/iio/dac/dpot-dac.c | 8 ++++++++
drivers/iio/multiplexer/iio-mux.c | 8 ++++++++
3 files changed, 24 insertions(+)
diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c
index 56e5913ab82d1c045c9ca27012008a4495502cbf..78bb86c291706748b4072a484532ad20c415ff9f 100644
--- a/drivers/iio/afe/iio-rescale.c
+++ b/drivers/iio/afe/iio-rescale.c
@@ -249,9 +249,17 @@ static int rescale_read_avail(struct iio_dev *indio_dev,
}
}
+static void rescale_read_avail_release_res(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int *vals, long mask)
+{
+ kfree(vals);
+}
+
static const struct iio_info rescale_info = {
.read_raw = rescale_read_raw,
.read_avail = rescale_read_avail,
+ .read_avail_release_resource = rescale_read_avail_release_res,
};
static ssize_t rescale_read_ext_info(struct iio_dev *indio_dev,
diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c
index 7332064d0852d979620f90066fb027f6f68f8c95..beec76247acb5170b81058d28a71ed17c831c905 100644
--- a/drivers/iio/dac/dpot-dac.c
+++ b/drivers/iio/dac/dpot-dac.c
@@ -108,6 +108,13 @@ static int dpot_dac_read_avail(struct iio_dev *indio_dev,
return -EINVAL;
}
+static void dpot_dac_read_avail_release_res(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int *vals, long mask)
+{
+ kfree(vals);
+}
+
static int dpot_dac_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
@@ -125,6 +132,7 @@ static int dpot_dac_write_raw(struct iio_dev *indio_dev,
static const struct iio_info dpot_dac_info = {
.read_raw = dpot_dac_read_raw,
.read_avail = dpot_dac_read_avail,
+ .read_avail_release_resource = dpot_dac_read_avail_release_res,
.write_raw = dpot_dac_write_raw,
};
diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c
index 2953403bef53bbe47a97a8ab1c475ed88d7f86d2..31345437784b01c5d6f8ea70263f4c2574388e7a 100644
--- a/drivers/iio/multiplexer/iio-mux.c
+++ b/drivers/iio/multiplexer/iio-mux.c
@@ -142,6 +142,13 @@ static int mux_read_avail(struct iio_dev *indio_dev,
return ret;
}
+static void mux_read_avail_release_res(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int *vals, long mask)
+{
+ kfree(vals);
+}
+
static int mux_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
@@ -171,6 +178,7 @@ static int mux_write_raw(struct iio_dev *indio_dev,
static const struct iio_info mux_info = {
.read_raw = mux_read_raw,
.read_avail = mux_read_avail,
+ .read_avail_release_resource = mux_read_avail_release_res,
.write_raw = mux_write_raw,
};
--
2.46.2
