staging:iio: rationalization of different buffer implementation hooks.

1) move a generic helper function out of ring_sw. It applies to other buffers as well.
2) Get rid of a lot of left over function definitions.
3) Move all the access functions into static structures.
4) Introduce and use a static structure for the setup functions, preenable etc.

Some driver conversions thanks to Michael Hennerich (pulled out of patches
that would otherwise sit after this).

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 38 deletions

diff --git a/drivers/staging/iio/kfifo_buf.h b/drivers/staging/iio/kfifo_buf.h
index eb337a47dd64..aac30539b2c6 100644
--- a/drivers/staging/iio/kfifo_buf.h
+++ b/drivers/staging/iio/kfifo_buf.h
@@ -11,44 +11,7 @@ struct iio_kfifo {
 	struct mutex use_lock;
 };
 
-#define iio_to_kfifo(r) container_of(r, struct iio_kfifo, ring)
-
-int iio_create_kfifo(struct iio_ring_buffer **r);
-int iio_init_kfifo(struct iio_ring_buffer *r, struct iio_dev *indio_dev);
-void iio_exit_kfifo(struct iio_ring_buffer *r);
-void iio_free_kfifo(struct iio_ring_buffer *r);
-void iio_mark_kfifo_in_use(struct iio_ring_buffer *r);
-void iio_unmark_kfifo_in_use(struct iio_ring_buffer *r);
-
-int iio_store_to_kfifo(struct iio_ring_buffer *r, u8 *data, s64 timestamp);
-int iio_read_first_n_kfifo(struct iio_ring_buffer *r,
-			   size_t n,
-			   char __user *buf);
-
-int iio_request_update_kfifo(struct iio_ring_buffer *r);
-int iio_mark_update_needed_kfifo(struct iio_ring_buffer *r);
-
-int iio_get_bytes_per_datum_kfifo(struct iio_ring_buffer *r);
-int iio_set_bytes_per_datum_kfifo(struct iio_ring_buffer *r, size_t bpd);
-int iio_get_length_kfifo(struct iio_ring_buffer *r);
-int iio_set_length_kfifo(struct iio_ring_buffer *r, int length);
-
-static inline void iio_kfifo_register_funcs(struct iio_ring_access_funcs *ra)
-{
-	ra->mark_in_use = &iio_mark_kfifo_in_use;
-	ra->unmark_in_use = &iio_unmark_kfifo_in_use;
-
-	ra->store_to = &iio_store_to_kfifo;
-	ra->read_first_n = &iio_read_first_n_kfifo;
-
-	ra->mark_param_change = &iio_mark_update_needed_kfifo;
-	ra->request_update = &iio_request_update_kfifo;
-
-	ra->get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo;
-	ra->set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo;
-	ra->get_length = &iio_get_length_kfifo;
-	ra->set_length = &iio_set_length_kfifo;
-};
+extern const struct iio_ring_access_funcs kfifo_access_funcs;
 
 struct iio_ring_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev);
 void iio_kfifo_free(struct iio_ring_buffer *r);