netdev - [PATCH net 3/9] qlcnic: Fix NULL pointer dereference in VF probe path.

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Date:	Fri, 19 Jul 2013 16:56:28 -0400
From:	Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
To:	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <Dept_NX_Linux_NIC_Driver@...gic.com>
Subject: [PATCH net 3/9] qlcnic: Fix NULL pointer dereference in VF probe path.

o Check for non-NULL set_mac_filter_count function pointer
  before calling it fixes the panic.

This patch fixes regression introduced by patch
"qlcnic: Secondary unicast MAC address support." with
commit id 168e4fb54c11865668ad50eff81b5f2729e0e0f4.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index b00cf56..f4bb8f5 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1869,7 +1869,8 @@ static inline void qlcnic_free_mac_list(struct qlcnic_adapter *adapter)

 static inline void qlcnic_set_mac_filter_count(struct qlcnic_adapter *adapter)
 {
-	adapter->ahw->hw_ops->set_mac_filter_count(adapter);
+	if (adapter->ahw->hw_ops->set_mac_filter_count)
+		adapter->ahw->hw_ops->set_mac_filter_count(adapter);
 }

 static inline void qlcnic_dev_request_reset(struct qlcnic_adapter *adapter,
-- 
1.7.1

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