[PATCH net-next v2 1/3] xsk: Remove non-zero 'dma_page' check in xp_assign_dev

[Yunjian Wang]

Now dma mappings are used by the physical NICs. However the vNIC
maybe do not need them. So remove non-zero 'dma_page' check in
xp_assign_dev.

Signed-off-by: Yunjian Wang <wangyunj...@huawei.com>
---
 net/xdp/xsk_buff_pool.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index ce60ecd48a4d..a5af75b1f43c 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -219,16 +219,9 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
        if (err)
                goto err_unreg_pool;
 
-       if (!pool->dma_pages) {
-               WARN(1, "Driver did not DMA map zero-copy buffers");
-               err = -EINVAL;
-               goto err_unreg_xsk;
-       }
        pool->umem->zc = true;
        return 0;
 
-err_unreg_xsk:
-       xp_disable_drv_zc(pool);
 err_unreg_pool:
        if (!force_zc)
                err = 0; /* fallback to copy mode */
-- 
2.41.0