freedreno/msm: remove reset of linked rings

The msm_cmd isn't refcount'd, so with stateobj rb's that have
independent lifecycle, this is no longer a safe thing to do.
Really, now that there is a bo-cache for rb's, fd_ringbuffer_reset()
should be deprecated because it adds a bunch of pointless complexity.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/freedreno_ringbuffer.h

@@ -102,6 +102,7 @@ struct fd_ringbuffer *fd_ringbuffer_ref(struct fd_ringbuffer *ring);
 void fd_ringbuffer_del(struct fd_ringbuffer *ring);
 void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
 		struct fd_ringbuffer *parent);
+will_be_deprecated
 void fd_ringbuffer_reset(struct fd_ringbuffer *ring);
 int fd_ringbuffer_flush(struct fd_ringbuffer *ring);
 /* in_fence_fd: -1 for no in-fence, else fence fd

freedreno/msm/msm_ringbuffer.c

@@ -324,14 +324,6 @@ static void flush_reset(struct fd_ringbuffer *ring)
 		fd_bo_del(&msm_bo->base);
 	}
 
-	/* for each of the cmd buffers, clear their reloc's: */
-	for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
-		struct msm_cmd *target_cmd = msm_ring->cmds[i];
-		if (!target_cmd)
-			continue;
-		target_cmd->nr_relocs = 0;
-	}
-
 	msm_ring->submit.nr_cmds = 0;
 	msm_ring->submit.nr_bos = 0;
 	msm_ring->nr_cmds = 0;