From 70c89bccb516af8694c50ba73b553278d7afaed4 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 21 Jun 2018 07:43:21 -0700 Subject: [PATCH] iw_cxgb4: correctly enforce the max reg_mr depth commit 7b72717a20bba8bdd01b14c0460be7d15061cd6b upstream. The code was mistakenly using the length of the page array memory instead of the depth of the page array. This would cause MR creation to fail in some cases. Fixes: 8376b86de7d3 ("iw_cxgb4: Support the new memory registration API") Cc: stable@vger.kernel.org Signed-off-by: Steve Wise Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/hw/cxgb4/mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index 410408f..0c21535 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -724,7 +724,7 @@ static int c4iw_set_page(struct ib_mr *ibmr, u64 addr) { struct c4iw_mr *mhp = to_c4iw_mr(ibmr); - if (unlikely(mhp->mpl_len == mhp->max_mpl_len)) + if (unlikely(mhp->mpl_len == mhp->attr.pbl_size)) return -ENOMEM; mhp->mpl[mhp->mpl_len++] = addr; -- 2.7.4