6.6-stable review patch. If anyone has any objections, please let me know.
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From: Alok Tiwari alok.a.tiwari@oracle.com
[ Upstream commit 145a417a39d7efbc881f52e829817376972b278c ]
RCFW_COMM_CONS_PCI_BAR_REGION is defined as BAR 2, so checking !creq_db->reg.bar_id is incorrect and always false.
pci_resource_start() returns the BAR base address, and a value of 0 indicates that the BAR is unassigned. Update the condition to test bar_base == 0 instead.
This ensures the driver detects and logs an error for an unassigned RCFW communication BAR.
Fixes: cee0c7bba486 ("RDMA/bnxt_re: Refactor command queue management code") Signed-off-by: Alok Tiwari alok.a.tiwari@oracle.com Link: https://patch.msgid.link/20251217100158.752504-1-alok.a.tiwari@oracle.com Reviewed-by: Kalesh AP kalesh-anakkur.purayil@broadcom.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c index e82bd37158ad..2accda5a04a1 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c @@ -1116,7 +1116,7 @@ static int bnxt_qplib_map_creq_db(struct bnxt_qplib_rcfw *rcfw, u32 reg_offt) creq_db->dbinfo.flags = 0; creq_db->reg.bar_id = RCFW_COMM_CONS_PCI_BAR_REGION; creq_db->reg.bar_base = pci_resource_start(pdev, creq_db->reg.bar_id); - if (!creq_db->reg.bar_id) + if (!creq_db->reg.bar_base) dev_err(&pdev->dev, "QPLIB: CREQ BAR region %d resc start is 0!", creq_db->reg.bar_id);