[PATCH 5.4 183/388] r8169: improve RTL8168b FIFO overflow workaround

From: Greg Kroah-Hartman
Date: Tue Sep 29 2020 - 08:04:09 EST


From: Heiner Kallweit <hkallweit1@xxxxxxxxx>

[ Upstream commit 6b02e407cbf8d421477ebb7792cd6380affcd313 ]

So far only the reset bit it set, but the handler executing the reset
is not scheduled. Therefore nothing will happen until some other action
schedules the handler. Improve this by ensuring that the handler is
scheduled.

Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/realtek/r8169_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 6fa9852e3f97f..903212ad9bb2f 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -6256,8 +6256,7 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
if (unlikely(status & RxFIFOOver &&
tp->mac_version == RTL_GIGA_MAC_VER_11)) {
netif_stop_queue(tp->dev);
- /* XXX - Hack alert. See rtl_task(). */
- set_bit(RTL_FLAG_TASK_RESET_PENDING, tp->wk.flags);
+ rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
}

rtl_irq_disable(tp);
--
2.25.1