commit 6b839b6cf9eada30b086effb51e5d6076bafc761
author Heiner Kallweit <hkallweit1@gmail.com> Thu Oct 18 19:56:01 2018 +0200
committer David S. Miller <davem@davemloft.net> Thu Oct 18 11:33:29 2018 -0700
tree ff03cc172c8ac189df65e1134bc6400a88907217
parent 2ee653f644ab203364724cac85a7efd371367979

r8169: fix NAPI handling under high load

rtl_rx() and rtl_tx() are called only if the respective bits are set
in the interrupt status register. Under high load NAPI may not be
able to process all data (work_done == budget) and it will schedule
subsequent calls to the poll callback.
rtl_ack_events() however resets the bits in the interrupt status
register, therefore subsequent calls to rtl8169_poll() won't call
rtl_rx() and rtl_tx() - chip interrupts are still disabled.

Fix this by calling rtl_rx() and rtl_tx() independent of the bits
set in the interrupt status register. Both functions will detect
if there's nothing to do for them.

Fixes: da78dbff2e05 ("r8169: remove work from irq handler.")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>