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authorArindam Nath <arindam.nath@amd.com>2020-02-05 18:54:26 +0300
committerJon Mason <jdmason@kudzu.us>2020-03-13 17:04:20 +0300
commit673dd0c24779fa9233fd600555132b5ffc1e19e4 (patch)
treeecc391355cb2fc0b37f77dd35d4e9736e303876e /drivers/ntb/hw
parent60ceafd151d62eba6c19c27e617269567082a17d (diff)
downloadlinux-673dd0c24779fa9233fd600555132b5ffc1e19e4.tar.xz
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>
Diffstat (limited to 'drivers/ntb/hw')
-rw-r--r--drivers/ntb/hw/amd/ntb_hw_amd.c6
1 files changed, 6 insertions, 0 deletions
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 */