From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org (mail.kernel.org. [198.145.29.99]) by gmr-mx.google.com with ESMTPS id z185si203066pgd.4.2020.04.11.16.04.20 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 11 Apr 2020 16:04:20 -0700 (PDT) From: Sasha Levin Subject: [PATCH AUTOSEL 5.6 026/149] NTB: set peer_sta within event handler itself Date: Sat, 11 Apr 2020 19:01:43 -0400 Message-Id: <20200411230347.22371-26-sashal@kernel.org> In-Reply-To: <20200411230347.22371-1-sashal@kernel.org> References: <20200411230347.22371-1-sashal@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Arindam Nath , Jon Mason , Sasha Levin , linux-ntb@googlegroups.com List-ID: From: Arindam Nath [ Upstream commit 2465b87ce36ea2dbd97e5fb58a0efd284c9f687e ] 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 Signed-off-by: Jon Mason Signed-off-by: Sasha Levin --- drivers/ntb/hw/amd/ntb_hw_amd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index e52b300b2f5b7..119cfd89afddc 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -493,8 +493,6 @@ 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) @@ -512,9 +510,11 @@ 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 */ @@ -527,6 +527,7 @@ 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 */ @@ -540,6 +541,7 @@ 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 */ -- 2.20.1