Fix to read the correct mailbox register.

Fixes: f45834fd5c6a ("net/txgbe: support OEM customized LED")
Cc: sta...@dpdk.org

Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
 drivers/net/txgbe/base/txgbe_mng.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/txgbe/base/txgbe_mng.c 
b/drivers/net/txgbe/base/txgbe_mng.c
index 07bbfe8142..df7145094f 100644
--- a/drivers/net/txgbe/base/txgbe_mng.c
+++ b/drivers/net/txgbe/base/txgbe_mng.c
@@ -284,7 +284,7 @@ s32 txgbe_close_notify(struct txgbe_hw *hw)
        if (status)
                return status;
 
-       tmp = rd32(hw, TXGBE_MNGSWSYNC);
+       tmp = rd32a(hw, TXGBE_MNGMBX, 1);
        if (tmp == TXGBE_CHECKSUM_CAP_ST_PASS)
                status = 0;
        else
@@ -314,7 +314,7 @@ s32 txgbe_open_notify(struct txgbe_hw *hw)
        if (status)
                return status;
 
-       tmp = rd32(hw, TXGBE_MNGSWSYNC);
+       tmp = rd32a(hw, TXGBE_MNGMBX, 1);
        if (tmp == TXGBE_CHECKSUM_CAP_ST_PASS)
                status = 0;
        else
-- 
2.27.0

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