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RDMA/hns: Correct the value of HNS_ROCE_HEM_CHUNK_LEN

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[ 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@hisilicon.com
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>
This commit is contained in:
Sirong Wang 2019-11-01 10:33:29 +08:00 committed by Greg Kroah-Hartman
parent d29e4ee553
commit a4623faa5e
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/hns/hns_roce_hem.h
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@ -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,