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NTB: handle link down event correctly

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Link-Up and Link-Down are mutually exclusive events.
So when we receive a Link-Down event, we should also
clear the bitmask for Link-Up event in peer_sta.

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 21:24:25 +05:30 committed by Jon Mason
parent fdd8281fb0
commit 60ceafd151
1 changed files with 6 additions and 3 deletions
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9
drivers/ntb/hw/amd/ntb_hw_amd.c
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@ -551,8 +551,12 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
dev_info(dev, "Flush is done.\n"); dev_info(dev, "Flush is done.\n");
break; break;
case AMD_PEER_RESET_EVENT: case AMD_PEER_RESET_EVENT:
ndev->peer_sta |= AMD_PEER_RESET_EVENT; case AMD_LINK_DOWN_EVENT:
amd_ack_smu(ndev, AMD_PEER_RESET_EVENT); ndev->peer_sta |= status;
if (status == AMD_LINK_DOWN_EVENT)
ndev->peer_sta &= ~AMD_LINK_UP_EVENT;
amd_ack_smu(ndev, status);
/* link down first */ /* link down first */
ntb_link_event(&ndev->ntb); ntb_link_event(&ndev->ntb);
@ -563,7 +567,6 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
case AMD_PEER_D3_EVENT: case AMD_PEER_D3_EVENT:
case AMD_PEER_PMETO_EVENT: case AMD_PEER_PMETO_EVENT:
case AMD_LINK_UP_EVENT: case AMD_LINK_UP_EVENT:
case AMD_LINK_DOWN_EVENT:
ndev->peer_sta |= status; ndev->peer_sta |= status;
amd_ack_smu(ndev, status); amd_ack_smu(ndev, status);