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igbvf: after mailbox write, wait for reply 

Two of the VF mailbox commands were not waiting for a reply from the PF,
which can result in a VF mailbox timeout in the VM for the next command.

Signed-off-by: Greg Edwards <gedwards@ddn.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Edwards 2017-07-20 10:00:58 -06:00 committed by Jeff Kirsher
parent 32652c2ac2
commit 0d3ee0d925
1 changed files with 8 additions and 2 deletions
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10
drivers/net/ethernet/intel/igbvf/vf.c
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@ -230,6 +230,7 @@ static void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
u16 *hash_list = (u16 *)&msgbuf[1];
u32 hash_value;
u32 cnt, i;
s32 ret_val;
/* Each entry in the list uses 1 16 bit word. We have 30
* 16 bit words available in our HW msg buffer (minus 1 for the
@ -250,7 +251,9 @@ static void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
mc_addr_list += ETH_ALEN;
}
mbx->ops.write_posted(hw, msgbuf, E1000_VFMAILBOX_SIZE);
ret_val = mbx->ops.write_posted(hw, msgbuf, E1000_VFMAILBOX_SIZE);
if (!ret_val)
mbx->ops.read_posted(hw, msgbuf, 1);
}
/**
@ -293,11 +296,14 @@ void e1000_rlpml_set_vf(struct e1000_hw *hw, u16 max_size)
{
struct e1000_mbx_info *mbx = &hw->mbx;
u32 msgbuf[2];
s32 ret_val;
msgbuf[0] = E1000_VF_SET_LPE;
msgbuf[1] = max_size;
mbx->ops.write_posted(hw, msgbuf, 2);
ret_val = mbx->ops.write_posted(hw, msgbuf, 2);
if (!ret_val)
mbx->ops.read_posted(hw, msgbuf, 1);
}
/**