virtio: remove virtqueue_add_buf().

All users changed to virtqueue_add_sg() or virtqueue_add_outbuf/inbuf.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

2 files changed, 3 insertions, 41 deletions

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5217baf5528c..c70207478e57 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -296,37 +296,6 @@ add_head:
 }
 
 /**
- * virtqueue_add_buf - expose buffer to other end
- * @vq: the struct virtqueue we're talking about.
- * @sg: the description of the buffer(s).
- * @out_num: the number of sg readable by other side
- * @in_num: the number of sg which are writable (after readable ones)
- * @data: the token identifying the buffer.
- * @gfp: how to do memory allocations (if necessary).
- *
- * Caller must ensure we don't call this with other virtqueue operations
- * at the same time (except where noted).
- *
- * Returns zero or a negative error (ie. ENOSPC, ENOMEM).
- */
-int virtqueue_add_buf(struct virtqueue *_vq,
-                      struct scatterlist sg[],
-                      unsigned int out,
-                      unsigned int in,
-                      void *data,
-                      gfp_t gfp)
-{
-        struct scatterlist *sgs[2];
-
-        sgs[0] = sg;
-        sgs[1] = sg + out;
-
-        return virtqueue_add(_vq, sgs, sg_next_arr,
-                             out, in, out ? 1 : 0, in ? 1 : 0, data, gfp);
-}
-EXPORT_SYMBOL_GPL(virtqueue_add_buf);
-
-/**
  * virtqueue_add_sgs - expose buffers to other end
  * @vq: the struct virtqueue we're talking about.
  * @sgs: array of terminated scatterlists.
@@ -473,7 +442,7 @@ EXPORT_SYMBOL_GPL(virtqueue_notify);
  * virtqueue_kick - update after add_buf
  * @vq: the struct virtqueue
  *
- * After one or more virtqueue_add_buf calls, invoke this to kick
+ * After one or more virtqueue_add_* calls, invoke this to kick
  * the other side.
  *
  * Caller must ensure we don't call this with other virtqueue
@@ -530,7 +499,7 @@ static inline bool more_used(const struct vring_virtqueue *vq)
  * operations at the same time (except where noted).
  *
  * Returns NULL if there are no used buffers, or the "data" token
- * handed to virtqueue_add_buf().
+ * handed to virtqueue_add_*().
  */
 void *virtqueue_get_buf(struct virtqueue *_vq, unsigned int *len)
 {
@@ -685,7 +654,7 @@ EXPORT_SYMBOL_GPL(virtqueue_enable_cb_delayed);
  * virtqueue_detach_unused_buf - detach first unused buffer
  * @vq: the struct virtqueue we're talking about.
  *
- * Returns NULL or the "data" token handed to virtqueue_add_buf().
+ * Returns NULL or the "data" token handed to virtqueue_add_*().
  * This is not valid on an active queue; it is useful only for device
  * shutdown.
  */
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 9ff8645b7e0b..e94c75ded111 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -34,13 +34,6 @@ struct virtqueue {
         void *priv;
 };
 
-int virtqueue_add_buf(struct virtqueue *vq,
-                      struct scatterlist sg[],
-                      unsigned int out_num,
-                      unsigned int in_num,
-                      void *data,
-                      gfp_t gfp);
-
 int virtqueue_add_outbuf(struct virtqueue *vq,
                          struct scatterlist sg[], unsigned int num,
                          void *data,