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>
bp->fw_seq = SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
DRV_MSG_SEQ_NUMBER_MASK;
- if (netif_running(dev))
- bnx2x_nic_load(bp, LOAD_NORMAL);
+ if (netif_running(dev)) {
+ if (bnx2x_nic_load(bp, LOAD_NORMAL)) {
+ netdev_err(bp->dev, "Error during driver initialization, try unloading/reloading the driver\n");
+ goto done;
+ }
+ }
netif_device_attach(dev);
+done:
rtnl_unlock();
}