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NTB: set peer_sta within event handler itself

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amd_ack_smu() should only set the corresponding
bits into SMUACK register. Setting the bitmask
of peer_sta should be done within the event handler.
They are two different things, and so should be
handled differently and at different places.

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 21:24:23 +05:30 committed by Jon Mason
parent 5cafa48502
commit 2465b87ce3
1 changed files with 4 additions and 2 deletions
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6
drivers/ntb/hw/amd/ntb_hw_amd.c
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@ -541,8 +541,6 @@ static void amd_ack_smu(struct amd_ntb_dev *ndev, u32 bit)
reg = readl(mmio + AMD_SMUACK_OFFSET);
reg |= bit;
writel(reg, mmio + AMD_SMUACK_OFFSET);
ndev->peer_sta |= bit;
}
static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
@ -560,9 +558,11 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
status &= AMD_EVENT_INTMASK;
switch (status) {
case AMD_PEER_FLUSH_EVENT:
ndev->peer_sta |= AMD_PEER_FLUSH_EVENT;
dev_info(dev, "Flush is done.\n");
break;
case AMD_PEER_RESET_EVENT:
ndev->peer_sta |= AMD_PEER_RESET_EVENT;
amd_ack_smu(ndev, AMD_PEER_RESET_EVENT);
/* link down first */
@ -575,6 +575,7 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
case AMD_PEER_PMETO_EVENT:
case AMD_LINK_UP_EVENT:
case AMD_LINK_DOWN_EVENT:
ndev->peer_sta |= status;
amd_ack_smu(ndev, status);
/* link down */
@ -588,6 +589,7 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
if (status & 0x1)
dev_info(dev, "Wakeup is done.\n");
ndev->peer_sta |= AMD_PEER_D0_EVENT;
amd_ack_smu(ndev, AMD_PEER_D0_EVENT);
/* start a timer to poll link status */