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Commit 0d3ee0d9 authored by Greg Edwards's avatar Greg Edwards Committed by Jeff Kirsher
Browse files

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: default avatarGreg Edwards <gedwards@ddn.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 32652c2a

drivers/net/ethernet/intel/igbvf/vf.c

+8 −2
Original line number Diff line number Diff line
@@ -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);

}



/**