diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igbvf/mbx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igbvf/mbx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igbvf/mbx.c b/drivers/net/ethernet/intel/igbvf/mbx.c index 01752f44ace2..c9a441632e9f 100644 --- a/drivers/net/ethernet/intel/igbvf/mbx.c +++ b/drivers/net/ethernet/intel/igbvf/mbx.c @@ -264,6 +264,8 @@ static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size) s32 err; u16 i; + WARN_ON_ONCE(!spin_is_locked(&hw->mbx_lock)); + /* lock the mailbox to prevent pf/vf race condition */ err = e1000_obtain_mbx_lock_vf(hw); if (err) @@ -300,6 +302,8 @@ static s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size) s32 err; u16 i; + WARN_ON_ONCE(!spin_is_locked(&hw->mbx_lock)); + /* lock the mailbox to prevent pf/vf race condition */ err = e1000_obtain_mbx_lock_vf(hw); if (err) |