[PATCH 09/15] NTB: handle link up, D0 and D3 events correctly

[Arindam Nath]

Just like for Link-Down event, Link-Up and D3 events
are also mutually exclusive to Link-Down and D0 events
respectively. So we clear the bitmasks in peer_sta
depending on event type.

Signed-off-by: Arindam Nath <arindam.nath@xxxxxxx>
---
 drivers/ntb/hw/amd/ntb_hw_amd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index d933a1dffdc6..a1c4a21c58c3 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -568,6 +568,11 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
 	case AMD_PEER_PMETO_EVENT:
 	case AMD_LINK_UP_EVENT:
 		ndev->peer_sta |= status;
+		if (status == AMD_LINK_UP_EVENT)
+			ndev->peer_sta &= ~AMD_LINK_DOWN_EVENT;
+		else if (status == AMD_PEER_D3_EVENT)
+			ndev->peer_sta &= ~AMD_PEER_D0_EVENT;
+
 		amd_ack_smu(ndev, status);
 
 		/* link down */
@@ -582,6 +587,7 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
 			dev_info(dev, "Wakeup is done.\n");
 
 		ndev->peer_sta |= AMD_PEER_D0_EVENT;
+		ndev->peer_sta &= ~AMD_PEER_D3_EVENT;
 		amd_ack_smu(ndev, AMD_PEER_D0_EVENT);
 
 		/* start a timer to poll link status */
-- 
2.17.1