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authorLars-Peter Clausen <lars@metafoo.de>2013-09-15 17:50:00 +0100
committerJonathan Cameron <jic23@kernel.org>2013-09-15 19:02:07 +0100
commit5d65d92045cb7d3b2c45020c0e62d6d1c1d34f37 (patch)
treea996bac655ff390d6331d82f6121c6b7aab7bbdf /include/linux/iio/buffer.h
parentc7a22c36805b015fd220f9fd13d0a14207d556e0 (diff)
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iio: iio_push_to_buffers(): Change type of 'data' to const void *
Change the type of the 'data' parameter for iio_push_to_buffers() from 'u8 *' to 'const void *'. Drivers typically use the correct type (e.g. __be16 *) for their data buffer. When passing the buffer to iio_push_to_buffers() it needs to be cast to 'u8 *' for the compiler to not complain (and also having to add __force if we want to keep sparse happy as well). Since the buffer implementation should not care about the data layout (except the size of one sample) using a void pointer is the correct thing to do. Also make it const as the buffer implementations are not supposed to modify it. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio/buffer.h')
-rw-r--r--include/linux/iio/buffer.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 2bac0eb..e5507e9 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -36,7 +36,7 @@ struct iio_buffer;
* any of them not existing.
**/
struct iio_buffer_access_funcs {
- int (*store_to)(struct iio_buffer *buffer, u8 *data);
+ int (*store_to)(struct iio_buffer *buffer, const void *data);
int (*read_first_n)(struct iio_buffer *buffer,
size_t n,
char __user *buf);
@@ -81,7 +81,7 @@ struct iio_buffer {
bool stufftoread;
const struct attribute_group *attrs;
struct list_head demux_list;
- unsigned char *demux_bounce;
+ void *demux_bounce;
struct list_head buffer_list;
};
@@ -120,7 +120,7 @@ int iio_scan_mask_set(struct iio_dev *indio_dev,
* @indio_dev: iio_dev structure for device.
* @data: Full scan.
*/
-int iio_push_to_buffers(struct iio_dev *indio_dev, unsigned char *data);
+int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
int iio_update_demux(struct iio_dev *indio_dev);
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