From 531eb45b3da4267fc2a64233ba256c8ffb02edd2 Mon Sep 17 00:00:00 2001 From: Sirong Wang Date: Fri, 1 Nov 2019 10:33:29 +0800 Subject: [PATCH] RDMA/hns: Correct the value of HNS_ROCE_HEM_CHUNK_LEN Size of pointer to buf field of struct hns_roce_hem_chunk should be considered when calculating HNS_ROCE_HEM_CHUNK_LEN, or sg table size will be larger than expected when allocating hem. Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver") Link: https://lore.kernel.org/r/1572575610-52530-2-git-send-email-liweihang@hisilicon.com Signed-off-by: Sirong Wang Signed-off-by: Weihang Li Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/hns/hns_roce_hem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.h b/drivers/infiniband/hw/hns/hns_roce_hem.h index 86783276fb1f..3bb8f78fb7b0 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hem.h +++ b/drivers/infiniband/hw/hns/hns_roce_hem.h @@ -59,7 +59,7 @@ enum { #define HNS_ROCE_HEM_CHUNK_LEN \ ((256 - sizeof(struct list_head) - 2 * sizeof(int)) / \ - (sizeof(struct scatterlist))) + (sizeof(struct scatterlist) + sizeof(void *))) #define check_whether_bt_num_3(type, hop_num) \ (type < HEM_TYPE_MTT && hop_num == 2)