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Subject[PATCH] RDMA/bnxt_re: Scan the whole bitmap when checking if "disabling RCFW with pending cmd-bit"
Date
The 'cmdq->cmdq_bitmap' bitmap is 'rcfw->cmdq_depth' bits long.
The size stored in 'cmdq->bmap_size' is the size of the bitmap in bytes.

Remove this erroneous 'bmap_size' and use 'rcfw->cmdq_depth' directly in
'bnxt_qplib_disable_rcfw_channel()'. Otherwise some error messages may
be missing.

Other uses of 'cmdq_bitmap' already take into account 'rcfw->cmdq_depth'
directly.

Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 6 ++----
drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 1 -
2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
index 3de854727460..19a0778d38a2 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
@@ -618,8 +618,6 @@ int bnxt_qplib_alloc_rcfw_channel(struct bnxt_qplib_res *res,
if (!cmdq->cmdq_bitmap)
goto fail;

- cmdq->bmap_size = bmap_size;
-
/* Allocate one extra to hold the QP1 entries */
rcfw->qp_tbl_size = qp_tbl_sz + 1;
rcfw->qp_tbl = kcalloc(rcfw->qp_tbl_size, sizeof(struct bnxt_qplib_qp_node),
@@ -667,8 +665,8 @@ void bnxt_qplib_disable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw)
iounmap(cmdq->cmdq_mbox.reg.bar_reg);
iounmap(creq->creq_db.reg.bar_reg);

- indx = find_first_bit(cmdq->cmdq_bitmap, cmdq->bmap_size);
- if (indx != cmdq->bmap_size)
+ indx = find_first_bit(cmdq->cmdq_bitmap, rcfw->cmdq_depth);
+ if (indx != rcfw->cmdq_depth)
dev_err(&rcfw->pdev->dev,
"disabling RCFW with pending cmd-bit %lx\n", indx);

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
index 82faa4e4cda8..0a3d8e7da3d4 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
@@ -152,7 +152,6 @@ struct bnxt_qplib_cmdq_ctx {
wait_queue_head_t waitq;
unsigned long flags;
unsigned long *cmdq_bitmap;
- u32 bmap_size;
u32 seq_num;
};

--
2.30.2
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