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NTB: handle link up, D0 and D3 events correctly 

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@amd.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Arindam Nath 2020-02-05 21:24:26 +05:30 committed by Jon Mason
parent 60ceafd151
commit 673dd0c247
1 changed files with 6 additions and 0 deletions
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6
drivers/ntb/hw/amd/ntb_hw_amd.c
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@ -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 */