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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 /drivers/iio/industrialio-buffer.c
parentc7a22c36805b015fd220f9fd13d0a14207d556e0 (diff)
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 'drivers/iio/industrialio-buffer.c')
-rw-r--r--drivers/iio/industrialio-buffer.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 7ea2edbf7614..a7ac4b5af03e 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -769,8 +769,8 @@ struct iio_demux_table {
struct list_head l;
};
-static unsigned char *iio_demux(struct iio_buffer *buffer,
- unsigned char *datain)
+static const void *iio_demux(struct iio_buffer *buffer,
+ const void *datain)
{
struct iio_demux_table *t;
@@ -783,9 +783,9 @@ static unsigned char *iio_demux(struct iio_buffer *buffer,
return buffer->demux_bounce;
}
-static int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data)
+static int iio_push_to_buffer(struct iio_buffer *buffer, const void *data)
{
- unsigned char *dataout = iio_demux(buffer, data);
+ const void *dataout = iio_demux(buffer, data);
return buffer->access->store_to(buffer, dataout);
}
@@ -800,7 +800,7 @@ static void iio_buffer_demux_free(struct iio_buffer *buffer)
}
-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 ret;
struct iio_buffer *buf;