[PATCH 1/1] ixgbevf: avoid checking hang when performing hardware reset

[zyjzyj2000]

From: Zhu Yanjun <zyjzyj2...@gmail.com>

When performing hardware reset, it is not necessary to check hang.
Or else, the call trace will appear.

Signed-off-by: Zhu Yanjun <zyjzyj2...@gmail.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      | 1 +
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 5 +++--
 drivers/net/ethernet/intel/ixgbevf/vf.c           | 5 +++++
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h 
b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index d5944c3..60fc63b 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -446,6 +446,7 @@ enum ixbgevf_state_t {
        __IXGBEVF_SERVICE_INITED,
        __IXGBEVF_RESET_REQUESTED,
        __IXGBEVF_QUEUE_RESET_REQUESTED,
+       __IXGBEVF_HW_RESETTING,
 };
 
 enum ixgbevf_boards {
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c 
b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index acc2401..530005b 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -2795,9 +2795,10 @@ static void ixgbevf_check_hang_subtask(struct 
ixgbevf_adapter *adapter)
        u32 eics = 0;
        int i;
 
-       /* If we're down or resetting, just bail */
+       /* If we're down, resetting or hw resetting, just bail */
        if (test_bit(__IXGBEVF_DOWN, &adapter->state) ||
-           test_bit(__IXGBEVF_RESETTING, &adapter->state))
+           test_bit(__IXGBEVF_RESETTING, &adapter->state) ||
+           test_bit(__IXGBEVF_HW_RESETTING, &adapter->state))
                return;
 
        /* Force detection of hung controller */
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c 
b/drivers/net/ethernet/intel/ixgbevf/vf.c
index e670d3b..4ec4484 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -80,6 +80,9 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
        s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
        u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
        u8 *addr = (u8 *)(&msgbuf[1]);
+       struct ixgbevf_adapter *adapter = hw->back;
+
+       set_bit(__IXGBEVF_HW_RESETTING, &adapter->state);
 
        /* Call adapter stop to disable tx/rx and clear interrupts */
        hw->mac.ops.stop_adapter(hw);
@@ -128,6 +131,8 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
 
        hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
 
+       clear_bit(__IXGBEVF_HW_RESETTING, &adapter->state);
+
        return 0;
 }
 
-- 
2.7.4