NTB: set peer_sta within event handler itself

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>

drivers/ntb/hw/amd/ntb_hw_amd.c

@@ -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 */