Commit 4a605357 authored Oct 13, 2015 by Lars-Peter Clausen Committed by Jonathan Cameron Oct 25, 2015

iio:iio_buffer_init(): Only set watermark if not already set

Only initialize the watermark field if it is still 0. This allows drivers
to provide a custom default watermark value. E.g. some driver might have a
fixed watermark or can only support watermarks within a certain range and
the initial value for the watermark should be within this range.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent f0566c0c

drivers/iio/industrialio-buffer.c

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -193,6 +193,7 @@ void iio_buffer_init(struct iio_buffer *buffer)
	INIT_LIST_HEAD(&buffer->buffer_list);		INIT_LIST_HEAD(&buffer->buffer_list);
	init_waitqueue_head(&buffer->pollq);		init_waitqueue_head(&buffer->pollq);
	kref_init(&buffer->ref);		kref_init(&buffer->ref);
			if (!buffer->watermark)
	buffer->watermark = 1;		buffer->watermark = 1;
	}		}
	EXPORT_SYMBOL(iio_buffer_init);		EXPORT_SYMBOL(iio_buffer_init);