From c0913c2e431c86026acba667f8655d90979bb79c Mon Sep 17 00:00:00 2001 From: Mitch Williams Date: Tue, 12 Apr 2016 08:30:41 -0700 Subject: [PATCH] i40evf: Don't Panic Under some circumstances the driver remove function may be called before the driver is fully initialized. So we can't assume that we know where our towel is at, or that all of the data structures are initialized. To ensure that we don't panic, check that the vsi_res pointer is valid before dereferencing it. Then drink beer and eat peanuts. Change-ID: If697b4db57348e39f9538793e16aa755e3e1af03 Signed-off-by: Mitch Williams Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40evf/i40evf.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40evf/i40evf.h b/drivers/net/ethernet/intel/i40evf/i40evf.h index e657eccd232c..017c83b6271f 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf.h +++ b/drivers/net/ethernet/intel/i40evf/i40evf.h @@ -256,8 +256,10 @@ struct i40evf_adapter { bool netdev_registered; bool link_up; enum i40e_virtchnl_ops current_op; -#define CLIENT_ENABLED(_a) ((_a)->vf_res->vf_offload_flags & \ - I40E_VIRTCHNL_VF_OFFLOAD_IWARP) +#define CLIENT_ENABLED(_a) ((_a)->vf_res ? \ + (_a)->vf_res->vf_offload_flags & \ + I40E_VIRTCHNL_VF_OFFLOAD_IWARP : \ + 0) #define RSS_AQ(_a) ((_a)->vf_res->vf_offload_flags & \ I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ) #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_offload_flags & \ -- 2.39.5