From: Rajesh Borundia <rajesh.borundia@qlogic.com>
Date: Tue, 2 Apr 2013 05:34:41 +0000 (+0000)
Subject: qlcnic: Fix NULL dereference in error path.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f1a094a83059b4677038befde6c4da6cfed31dbd;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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);