[PATCH net-next] octeontx2-af: fix PF/CGX debugfs PCI bus lookup
From: Ratheesh Kannoth <rkannoth@marvell.com>
Date: 2026-09-01 04:50:05
Also in:
lkml
Subsystem:
marvell octeontx2 rvu admin function driver, networking drivers, the rest · Maintainers:
Sunil Goutham, Ratheesh Kannoth, Geetha sowjanya, Subbaraya Sundeep, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Subbaraya Sundeep <sbhatta@marvell.com> rvu_dbg_rvu_pf_cgx_map_display() locates each RVU PF PCI device via pci_get_domain_bus_and_slot() when printing the PF-to-CGX map. It assumed PF0 always sits on PCI bus 1 and derived other PF bus numbers as pf + 1, but the AF device can be enumerated on a different bus. Use rvu->pdev->bus->number as the base bus instead, so each PF lookup uses pf + start on systems where RVU functions are on contiguous buses but do not start at bus 1. Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com> --- drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 22ee99676879..bf0302c0c1fc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c@@ -829,6 +829,7 @@ static int rvu_dbg_rvu_pf_cgx_map_display(struct seq_file *filp, void *unused) int pf, domain, blkid; u8 cgx_id, lmac_id; u16 pcifunc; + u8 start; domain = 2; mac_ops = get_mac_ops(rvu_first_cgx_pdata(rvu));
@@ -837,11 +838,16 @@ static int rvu_dbg_rvu_pf_cgx_map_display(struct seq_file *filp, void *unused) return 0; seq_printf(filp, "PCI dev\t\tRVU PF Func\tNIX block\t%s\tLMAC\tCHAN\n", mac_ops->name); + + /* All the PF devices are on contiguous PCI bus numbers, but the PF0(AF) + * may not start from 1 always. Hence get bus number from PCI device. + */ + start = rvu->pdev->bus->number; for (pf = 0; pf < rvu->hw->total_pfs; pf++) { if (!is_pf_cgxmapped(rvu, pf)) continue; - pdev = pci_get_domain_bus_and_slot(domain, pf + 1, 0); + pdev = pci_get_domain_bus_and_slot(domain, pf + start, 0); if (!pdev) continue;
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2.43.0