From: Sirong Wang wangsirong@huawei.com
[ Upstream commit 531eb45b3da4267fc2a64233ba256c8ffb02edd2 ]
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@hisili... Signed-off-by: Sirong Wang wangsirong@huawei.com Signed-off-by: Weihang Li liweihang@hisilicon.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 435748858252d..8e8917ebb013b 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hem.h +++ b/drivers/infiniband/hw/hns/hns_roce_hem.h @@ -52,7 +52,7 @@ enum {
#define HNS_ROCE_HEM_CHUNK_LEN \ ((256 - sizeof(struct list_head) - 2 * sizeof(int)) / \ - (sizeof(struct scatterlist))) + (sizeof(struct scatterlist) + sizeof(void *)))
enum { HNS_ROCE_HEM_PAGE_SHIFT = 12,