[PATCH net] net: stmmac: cleared __FPE_REMOVING bit in stmmac_fpe_start_wq()

[mohammad.athari.ismail at intel.com]

From: Mohammad Athari Bin Ismail <mohammad.athari.ismail at 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 at 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