Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
IronPort-SDR: KsNG1196CrkiVMs+iBtYzsAMngsWG6waT1KKDX6qJtL16v2+trc8F/yMeSnel6bC+hPOleegXV
 bWeNlK/NQGsA==
IronPort-SDR: Fs4pZUxMK/8fcBFX0Jb8mob6R/t0PY5ARNLAXFEgVblwdspSkxuzuukhnkHZ/mdnqNPvd9alWr
 2e+5YiWNWk1A==
From:   mohammad.athari.ismail@intel.com
To:     Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        Jose Abreu <joabreu@synopsys.com>,
        "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc:     Ong Boon Leong <boon.leong.ong@intel.com>,
        Voon Weifeng <weifeng.voon@intel.com>,
        Wong Vee Khee <vee.khee.wong@intel.com>,
        Tan Tee Min <tee.min.tan@intel.com>, netdev@vger.kernel.org,
        linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        mohammad.athari.ismail@intel.com
Subject: [PATCH net] net: stmmac: cleared __FPE_REMOVING bit in stmmac_fpe_start_wq()
Date:   Fri, 30 Apr 2021 07:01:04 +0800
Message-Id: <20210429230104.16977-1-mohammad.athari.ismail@intel.com>
Precedence: bulk

From: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>

An issue found when network interface is down and up again, FPE handshake
fails to trigger. This is due to __FPE_REMOVING bit remains being set in
stmmac_fpe_stop_wq() but not cleared in stmmac_fpe_start_wq(). This
cause FPE workqueue task, stmmac_fpe_lp_task() not able to be executed.

To fix this, add clearing __FPE_REMOVING bit in stmmac_fpe_start_wq().

Fixes: 5a5586112b92 ("net: stmmac: support FPE link partner hand-shaking procedure")
Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index a9a984c57d78..e0b7eebcb512 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3180,6 +3180,7 @@ static int stmmac_fpe_start_wq(struct stmmac_priv *priv)
 	char *name;
 
 	clear_bit(__FPE_TASK_SCHED, &priv->fpe_task_state);
+	clear_bit(__FPE_REMOVING,  &priv->fpe_task_state);
 
 	name = priv->wq_name;
 	sprintf(name, "%s-fpe", priv->dev->name);
-- 
2.17.1