From 2b136d025348774633a2f6fc2a87f0cf409a3ab9 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Thu, 31 Oct 2013 15:26:33 +0200 Subject: [PATCH] IB/mlx5: Fix list_del of empty list For archs with pages size of 4K, when the chunk is freed, fwp is not in the list so avoid attempting to delete it. Signed-off-by: Eli Cohen Signed-off-by: Roland Dreier --- drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c index ba816c25c5c1..37b6ad1f9a1b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c @@ -229,7 +229,8 @@ static void free_4k(struct mlx5_core_dev *dev, u64 addr) set_bit(n, &fwp->bitmask); if (fwp->free_count == MLX5_NUM_4K_IN_PAGE) { rb_erase(&fwp->rb_node, &dev->priv.page_root); - list_del(&fwp->list); + if (fwp->free_count != 1) + list_del(&fwp->list); dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL); __free_page(fwp->page); kfree(fwp); -- 2.20.1