From f1a094a83059b4677038befde6c4da6cfed31dbd Mon Sep 17 00:00:00 2001 From: Rajesh Borundia Date: Tue, 2 Apr 2013 05:34:41 +0000 Subject: [PATCH] qlcnic: Fix NULL dereference in error path. o Fix for smatch tool reported error drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c:2029 qlcnic_probe() error: potential NULL dereference 'adapter'. o While returning from an error path in probe, adapter is not initialized. So do not access adapter in cleanup path. Signed-off-by: Rajesh Borundia Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index 3ee593ee13cf..0d00b2bd2c81 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -546,11 +546,10 @@ void qlcnic_teardown_intr(struct qlcnic_adapter *adapter) } } -static void -qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter) +static void qlcnic_cleanup_pci_map(struct qlcnic_hardware_context *ahw) { - if (adapter->ahw->pci_base0 != NULL) - iounmap(adapter->ahw->pci_base0); + if (ahw->pci_base0 != NULL) + iounmap(ahw->pci_base0); } static int qlcnic_get_act_pci_func(struct qlcnic_adapter *adapter) @@ -2026,7 +2025,7 @@ err_out_free_netdev: free_netdev(netdev); err_out_iounmap: - qlcnic_cleanup_pci_map(adapter); + qlcnic_cleanup_pci_map(ahw); err_out_free_hw_res: kfree(ahw); @@ -2083,7 +2082,7 @@ static void qlcnic_remove(struct pci_dev *pdev) qlcnic_remove_sysfs(adapter); - qlcnic_cleanup_pci_map(adapter); + qlcnic_cleanup_pci_map(adapter->ahw); qlcnic_release_firmware(adapter); -- 2.20.1