---

yaml --- r: 281356 b: refs/heads/master c: 8fe6495 h: refs/heads/master v: v3
git-mirror · Dec 13, 2011 · c87de56 · c87de56
1 parent 6a50304
commit c87de56
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Showing 3 changed files with 7 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 641b4bb5f1c51a68f5aec7d3b47c96b39820b105
+refs/heads/master: 8fe64955e47277abf4a3ec56383ea9b9487bd029
diff --git a/trunk/drivers/staging/iio/buffer.h b/trunk/drivers/staging/iio/buffer.h
@@ -21,7 +21,7 @@ struct iio_buffer;
  * @mark_in_use:	reference counting, typically to prevent module removal
  * @unmark_in_use:	reduce reference count when no longer using buffer
  * @store_to:		actually store stuff to the buffer
- * @read_first_n:	try to get a specified number of elements (must exist)
+ * @read_first_n:	try to get a specified number of bytes (must exist)
  * @mark_param_change:	notify buffer that some relevant parameter has changed
  *			Often this means the underlying storage may need to
  *			change.

diff --git a/trunk/drivers/staging/iio/kfifo_buf.c b/trunk/drivers/staging/iio/kfifo_buf.c
@@ -160,7 +160,11 @@ static int iio_read_first_n_kfifo(struct iio_buffer *r,
 	int ret, copied;
 	struct iio_kfifo *kf = iio_to_kfifo(r);
 
-	ret = kfifo_to_user(&kf->kf, buf, r->bytes_per_datum*n, &copied);
+	if (n < r->bytes_per_datum)
+		return -EINVAL;
+
+	n = rounddown(n, r->bytes_per_datum);
+	ret = kfifo_to_user(&kf->kf, buf, n, &copied);
 
 	return copied;
 }