From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Thu, 25 Nov 2021 21:42:28 +0100
Subject: RDMA/bnxt_re: Use bitmap_zalloc() when applicable
Patch-mainline: v5.17-rc1
Git-commit: 81ff48ddda0b7e1d4d1251d2a9c8e4059cd9456f
References: jsc#PED-1494

Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid
some open-coded arithmetic in allocator arguments.

Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.

Link: https://lore.kernel.org/r/5c029daf43b92fdc27926fe8a98084843437c498.1637872888.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
@@ -555,7 +555,7 @@ skip_ctx_setup:
 
 void bnxt_qplib_free_rcfw_channel(struct bnxt_qplib_rcfw *rcfw)
 {
-	kfree(rcfw->cmdq.cmdq_bitmap);
+	bitmap_free(rcfw->cmdq.cmdq_bitmap);
 	kfree(rcfw->qp_tbl);
 	kfree(rcfw->crsqe_tbl);
 	bnxt_qplib_free_hwq(rcfw->res, &rcfw->cmdq.hwq);
@@ -572,7 +572,6 @@ int bnxt_qplib_alloc_rcfw_channel(struct
 	struct bnxt_qplib_sg_info sginfo = {};
 	struct bnxt_qplib_cmdq_ctx *cmdq;
 	struct bnxt_qplib_creq_ctx *creq;
-	u32 bmap_size = 0;
 
 	rcfw->pdev = res->pdev;
 	cmdq = &rcfw->cmdq;
@@ -613,8 +612,7 @@ int bnxt_qplib_alloc_rcfw_channel(struct
 	if (!rcfw->crsqe_tbl)
 		goto fail;
 
-	bmap_size = BITS_TO_LONGS(rcfw->cmdq_depth) * sizeof(unsigned long);
-	cmdq->cmdq_bitmap = kzalloc(bmap_size, GFP_KERNEL);
+	cmdq->cmdq_bitmap = bitmap_zalloc(rcfw->cmdq_depth, GFP_KERNEL);
 	if (!cmdq->cmdq_bitmap)
 		goto fail;