octeontx2-af: debugsfs: fix pci device refcount leak

As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put().

So before returning from rvu_dbg_rvu_pf_cgx_map_display() or
cgx_print_dmac_flt(), pci_dev_put() is called to avoid refcount
leak.

Fixes: dbc52debf95f ("octeontx2-af: Debugfs support for DMAC filters")
Fixes: e2fb37303865 ("octeontx2-af: Display CGX, NIX and PF map in debugfs.")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221117124658.162409-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index a1970eb..f66dde2 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -880,6 +880,8 @@ static int rvu_dbg_rvu_pf_cgx_map_display(struct seq_file *filp, void *unused)
                sprintf(lmac, "LMAC%d", lmac_id);
                seq_printf(filp, "%s\t0x%x\t\tNIX%d\t\t%s\t%s\n",
                           dev_name(&pdev->dev), pcifunc, blkid, cgx, lmac);
+
+               pci_dev_put(pdev);
        }
        return 0;
 }
@@ -2566,6 +2568,7 @@ static int cgx_print_dmac_flt(struct seq_file *s, int lmac_id)
                }
        }
 
+       pci_dev_put(pdev);
        return 0;
 }