bnx2x: fix page fault following EEH recovery
In the last step of the EEH recovery process, the EEH driver calls into bnx2x_io_resume() to re-initialize the NIC hardware via the function bnx2x_nic_load(). If an error occurs during bnx2x_nic_load(), OS and hardware resources are released and an error code is returned to the caller. When called from bnx2x_io_resume(), the return code is ignored and the network interface is brought up unconditionally. Later attempts to send a packet via this interface result in a page fault due to a null pointer reference. This patch checks the return code of bnx2x_nic_load(), prints an error message if necessary, and does not enable the interface. Signed-off-by: David Christensen <drc@linux.vnet.ibm.com> Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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