---

yaml
---
r: 249776
b: refs/heads/master
c: b26a218
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 25888dc51163a566f8c8f18a84c100851d12738c
+refs/heads/master: b26a2188e0464f5962caff62074c91ef1c92056a

trunk/drivers/staging/iio/accel/sca3000_ring.c

@@ -79,16 +79,13 @@ static int sca3000_read_data(struct sca3000_state *st,
  * @r:			the ring
  * @count:		number of samples to try and pull
  * @data:		output the actual samples pulled from the hw ring
- * @dead_offset:	cheating a bit here: Set to 1 so as to allow for the
- *			leading byte used in bus comms.
  *
  * Currently does not provide timestamps.  As the hardware doesn't add them they
  * can only be inferred approximately from ring buffer events such as 50% full
  * and knowledge of when buffer was last emptied.  This is left to userspace.
  **/
 static int sca3000_read_first_n_hw_rb(struct iio_ring_buffer *r,
-				      size_t count, char __user *buf,
-				      int *dead_offset)
+				      size_t count, char __user *buf)
 {
 	struct iio_hw_ring_buffer *hw_ring = iio_to_hw_ring_buf(r);
 	struct iio_dev *indio_dev = hw_ring->private;

trunk/drivers/staging/iio/industrialio-ring.c

@@ -71,12 +71,12 @@ static ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf,
 				  size_t n, loff_t *f_ps)
 {
 	struct iio_ring_buffer *rb = filp->private_data;
-	int ret, dead_offset;
+	int ret;
 
 	/* rip lots must exist. */
 	if (!rb->access.read_first_n)
 		return -EINVAL;
-	ret = rb->access.read_first_n(rb, n, buf, &dead_offset);
+	ret = rb->access.read_first_n(rb, n, buf);
 
 	return ret;
 }

trunk/drivers/staging/iio/kfifo_buf.c

@@ -182,12 +182,11 @@ int iio_store_to_kfifo(struct iio_ring_buffer *r, u8 *data, s64 timestamp)
 EXPORT_SYMBOL(iio_store_to_kfifo);
 
 int iio_read_first_n_kfifo(struct iio_ring_buffer *r,
-			   size_t n, char __user *buf, int *deadoffset)
+			   size_t n, char __user *buf)
 {
 	int ret, copied;
 	struct iio_kfifo *kf = iio_to_kfifo(r);
 
-	*deadoffset = 0;
 	ret = kfifo_to_user(&kf->kf, buf, r->bytes_per_datum*n, &copied);
 
 	return copied;

trunk/drivers/staging/iio/kfifo_buf.h

@@ -23,8 +23,7 @@ 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 *dead_offset);
+			   char __user *buf);
 
 int iio_request_update_kfifo(struct iio_ring_buffer *r);
 int iio_mark_update_needed_kfifo(struct iio_ring_buffer *r);

trunk/drivers/staging/iio/ring_generic.h

@@ -50,8 +50,7 @@ struct iio_ring_access_funcs {
 	int (*read_last)(struct iio_ring_buffer *ring, u8 *data);
 	int (*read_first_n)(struct iio_ring_buffer *ring,
 			    size_t n,
-			    char __user *buf,
-			    int *dead_offset);
+			    char __user *buf);
 
 	int (*mark_param_change)(struct iio_ring_buffer *ring);
 	int (*request_update)(struct iio_ring_buffer *ring);

trunk/drivers/staging/iio/ring_sw.c

@@ -139,14 +139,13 @@ static int iio_store_to_sw_ring(struct iio_sw_ring_buffer *ring,
 }
 
 int iio_read_first_n_sw_rb(struct iio_ring_buffer *r,
-			   size_t n, char __user *buf, int *dead_offset)
+			   size_t n, char __user *buf)
 {
 	struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r);
 
 	u8 *initial_read_p, *initial_write_p, *current_read_p, *end_read_p;
 	u8 *data;
-	int ret, max_copied;
-	int bytes_to_rip;
+	int ret, max_copied, bytes_to_rip, dead_offset;
 
 	/* A userspace program has probably made an error if it tries to
 	 *  read something that is not a whole number of bpds.
@@ -227,17 +226,17 @@ int iio_read_first_n_sw_rb(struct iio_ring_buffer *r,
 	current_read_p = ring->read_p;
 
 	if (initial_read_p <= current_read_p)
-		*dead_offset = current_read_p - initial_read_p;
+		dead_offset = current_read_p - initial_read_p;
 	else
-		*dead_offset = ring->buf.length*ring->buf.bytes_per_datum
+		dead_offset = ring->buf.length*ring->buf.bytes_per_datum
 			- (initial_read_p - current_read_p);
 
 	/* possible issue if the initial write has been lapped or indeed
 	 * the point we were reading to has been passed */
 	/* No valid data read.
 	 * In this case the read pointer is already correct having been
 	 * pushed further than we would look. */
-	if (max_copied - *dead_offset < 0) {
+	if (max_copied - dead_offset < 0) {
 		ret = 0;
 		goto error_free_data_cpy;
 	}
@@ -253,9 +252,9 @@ int iio_read_first_n_sw_rb(struct iio_ring_buffer *r,
 	while (ring->read_p != end_read_p)
 		ring->read_p = end_read_p;
 
-	ret = max_copied - *dead_offset;
+	ret = max_copied - dead_offset;
 
-	if (copy_to_user(buf, data + *dead_offset, ret))  {
+	if (copy_to_user(buf, data + dead_offset, ret))  {
 		ret =  -EFAULT;
 		goto error_free_data_cpy;
 	}

trunk/drivers/staging/iio/ring_sw.h

@@ -97,13 +97,11 @@ int iio_store_to_sw_rb(struct iio_ring_buffer *r, u8 *data, s64 timestamp);
  * @r:			ring buffer instance
  * @n:			number of datum's to try and read
  * @buf:		userspace buffer into which data is copied
- * @dead_offset:	how much of the stored data was possibly invalidated by
  *			the end of the copy.
  **/
 int iio_read_first_n_sw_rb(struct iio_ring_buffer *r,
 			   size_t n,
-			   char __user *buf,
-			   int *dead_offset);
+			   char __user *buf);
 
 /**
  * iio_request_update_sw_rb() - update params if update needed