net: ethoc: enable NAPI before poll may be scheduled
authorMax Filippov <jcmvbkbc@gmail.com>
Tue, 6 Jun 2017 01:31:16 +0000 (18:31 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 14 Jun 2017 11:16:19 +0000 (13:16 +0200)
commit9cbc6cbd9170d9b1e08fdaa7644b387978a74ada
tree766dfa7c9de362a8df14aa325700720dd7d98fc0
parent45202cd2199c1ef8f5064a6f58e40c41947dc634
net: ethoc: enable NAPI before poll may be scheduled

[ Upstream commit d220b942a4b6a0640aee78841608f4aa5e8e185e ]

ethoc_reset enables device interrupts, ethoc_interrupt may schedule a
NAPI poll before NAPI is enabled in the ethoc_open, which results in
device being unable to send or receive anything until it's closed and
reopened. In case the device is flooded with ingress packets it may be
unable to recover at all.
Move napi_enable above ethoc_reset in the ethoc_open to fix that.

Fixes: a1702857724f ("net: Add support for the OpenCores 10/100 Mbps Ethernet MAC.")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/ethoc.c