[PATCH] iio:buffer: Free active scan mask in iio_disable_all_buffers()

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Usually the active scan mask is freed in __iio_update_buffers() when the buffer
is disabled. But when the device is still sampling when it is removed we'll end
up disabling the buffers in iio_disable_all_buffers(). So we also need to free
the active scan mask here, otherwise it will be leaked.

Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
 drivers/iio/industrialio-buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 796376a..1c72080 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -490,6 +490,9 @@ void iio_disable_all_buffers(struct iio_dev *indio_dev)
 	indio_dev->currentmode = INDIO_DIRECT_MODE;
 	if (indio_dev->setup_ops->postdisable)
 		indio_dev->setup_ops->postdisable(indio_dev);
+
+	if (indio_dev->available_scan_masks == NULL)
+		kfree(indio_dev->active_scan_mask);
 }
 
 static int __iio_update_buffers(struct iio_dev *indio_dev,
-- 
1.8.0

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