staging:iio: Rip out helper for software rings.

It seemed like a good idea at the time, it wasn't.
The code with this in place is larger and more complex for
no real gain.  Basically we've cleaned up the core around
it so much that this no longer makes sense.

Only really effects the lis3l02dq driver.

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

1 files changed, 0 insertions, 49 deletions

diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c
index 35896cbb..feb84e2 100644
--- a/drivers/staging/iio/ring_sw.c
+++ b/drivers/staging/iio/ring_sw.c
@@ -452,55 +452,6 @@ void iio_sw_rb_free(struct iio_ring_buffer *r)
 }
 EXPORT_SYMBOL(iio_sw_rb_free);
 
-void iio_sw_trigger_to_ring(struct iio_sw_ring_helper_state *st)
-{
-	struct iio_ring_buffer *ring = st->indio_dev->ring;
-	int len = 0;
-	size_t datasize = ring->access->get_bytes_per_datum(ring);
-	char *data = kmalloc(datasize, GFP_KERNEL);
-
-	if (data == NULL) {
-		dev_err(st->indio_dev->dev.parent,
-			"memory alloc failed in ring bh");
-		return;
-	}
-
-	if (ring->scan_count)
-		len = st->get_ring_element(st, data);
-
-	  /* Guaranteed to be aligned with 8 byte boundary */
-	if (ring->scan_timestamp)
-		*(s64 *)(((phys_addr_t)data + len
-				+ sizeof(s64) - 1) & ~(sizeof(s64) - 1))
-			= st->last_timestamp;
-	ring->access->store_to(ring,
-			(u8 *)data,
-			st->last_timestamp);
-
-	iio_trigger_notify_done(st->indio_dev->trig);
-	kfree(data);
-
-	return;
-}
-EXPORT_SYMBOL(iio_sw_trigger_to_ring);
-
-void iio_sw_trigger_bh_to_ring(struct work_struct *work_s)
-{
-	struct iio_sw_ring_helper_state *st
-		= container_of(work_s, struct iio_sw_ring_helper_state,
-			work_trigger_to_ring);
-	iio_sw_trigger_to_ring(st);
-}
-EXPORT_SYMBOL(iio_sw_trigger_bh_to_ring);
-
-void iio_sw_poll_func_th(struct iio_dev *indio_dev, s64 time)
-{	struct iio_sw_ring_helper_state *h
-		= iio_dev_get_devdata(indio_dev);
-	h->last_timestamp = time;
-	schedule_work(&h->work_trigger_to_ring);
-}
-EXPORT_SYMBOL(iio_sw_poll_func_th);
-
 const struct iio_ring_access_funcs ring_sw_access_funcs = {
 	.mark_in_use = &iio_mark_sw_rb_in_use,
 	.unmark_in_use = &iio_unmark_sw_rb_in_use,