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RDMA/bnxt_re: Scan the whole bitmap when checking if "disabling RCFW with pending cmd-bit"

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[ Upstream commit a917dfb66c0a1fa1caacf3d71edcafcab48e6ff0 ]

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: 1ac5a40479 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Link: https://lore.kernel.org/r/47ed717c3070a1d0f53e7b4c768a4fd11caf365d.1636707421.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe JAILLET 2021-11-12 09:59:04 +01:00 committed by Greg Kroah-Hartman
parent 84cd5c029d
commit 04a032ea24
2 changed files with 2 additions and 5 deletions
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6
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
View File

@ -614,8 +614,6 @@ 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),
@ -663,8 +661,8 @@ 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);

1
drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
View File

@ -150,7 +150,6 @@ struct bnxt_qplib_cmdq_ctx {
wait_queue_head_t waitq;
unsigned long flags;
unsigned long *cmdq_bitmap;
u32 bmap_size;
u32 seq_num;
};