From: Selvin Xavier <selvin.xavier@broadcom.com>
Date: Wed, 15 Sep 2021 05:32:41 -0700
Subject: RDMA/bnxt_re: Correct FRMR size calculation
Patch-mainline: v5.16-rc1
Git-commit: 7a3c3a121eb73f59f04939a14c117e884f3538e2
References: jsc#SLE-18977

FRMR WQE requires to provide the log2 value of the PBL and page size.  Use
the standard ilog2() to calculate the log2 value

Link: https://lore.kernel.org/r/1631709163-2287-11-git-send-email-selvin.xavier@broadcom.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/bnxt_re/ib_verbs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -2488,7 +2488,8 @@ static int bnxt_re_build_reg_wqe(const s
 
 	wqe->frmr.l_key = wr->key;
 	wqe->frmr.length = wr->mr->length;
-	wqe->frmr.pbl_pg_sz_log = (wr->mr->page_size >> PAGE_SHIFT_4K) - 1;
+	wqe->frmr.pbl_pg_sz_log = ilog2(PAGE_SIZE >> PAGE_SHIFT_4K);
+	wqe->frmr.pg_sz_log = ilog2(wr->mr->page_size >> PAGE_SHIFT_4K);
 	wqe->frmr.va = wr->mr->iova;
 	return 0;
 }