kernel_optimize_test/drivers/net
Brian Silverman f76580d82c can: m_can: Disable and ignore ELO interrupt
commit f58ac1adc76b5beda43c64ef359056077df4d93a upstream.

With the design of this driver, this condition is often triggered.
However, the counter that this interrupt indicates an overflow is never
read either, so overflowing is harmless.

On my system, when a CAN bus starts flapping up and down, this locks up
the whole system with lots of interrupts and printks.

Specifically, this interrupt indicates the CEL field of ECR has
overflowed. All reads of ECR mask out CEL.

Fixes: e0d1f4816f ("can: m_can: add Bosch M_CAN controller support")
Link: https://lore.kernel.org/all/20211129222628.7490-1-brian.silverman@bluerivertech.com
Cc: stable@vger.kernel.org
Signed-off-by: Brian Silverman <brian.silverman@bluerivertech.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 11:32:39 +01:00
..
appletalk
arcnet
bonding bonding: make tx_rebalance_counter an atomic 2021-12-14 11:32:36 +01:00
caif
can can: m_can: Disable and ignore ELO interrupt 2021-12-14 11:32:39 +01:00
dsa net: dsa: rtl8366rb: Fix off-by-one bug 2021-11-18 14:04:03 +01:00
ethernet iavf: Fix reporting when setting descriptor count 2021-12-14 11:32:37 +01:00
fddi
fjes
hamradio net: 6pack: Fix tx timeout and slot time 2021-09-30 10:11:07 +02:00
hippi
hyperv
ieee802154
ipa net: ipa: disable HOLB drop when updating timer 2021-11-26 10:39:14 +01:00
ipvlan
mdio mdio: aspeed: Fix "Link is Down" issue 2021-12-01 09:19:01 +01:00
netdevsim
pcs
phy net: phylink: Force retrigger in case of latched link-fail indicator 2021-12-01 09:19:07 +01:00
plip
ppp
slip
team
usb net: usb: lan78xx: lan78xx_phy_init(): use PHY_POLL instead of "0" if no IRQ is available 2021-12-08 09:03:25 +01:00
vmxnet3 vmxnet3: do not stop tx queues after netif_device_detach() 2021-11-18 14:03:43 +01:00
wan
wimax
wireguard wireguard: ratelimiter: use kvcalloc() instead of kvzalloc() 2021-12-08 09:03:23 +01:00
wireless iwlwifi: mvm: retry init flow if failed 2021-12-08 09:03:29 +01:00
xen-netback xen-netback: correct success/error reporting for the SKB-with-fraglist case 2021-10-09 14:40:56 +02:00
bareudp.c
dummy.c
eql.c
geneve.c
gtp.c
ifb.c ifb: fix building without CONFIG_NET_CLS_ACT 2021-11-18 14:03:49 +01:00
Kconfig ifb: Depend on netfilter alternatively to tc 2021-11-18 14:03:46 +01:00
LICENSE.SRC
loopback.c
macsec.c
macvlan.c
macvtap.c
Makefile
mdio.c
mii.c
net_failover.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c
thunderbolt.c
tun.c tun: fix bonding active backup with arp monitoring 2021-11-26 10:39:18 +01:00
veth.c
virtio_net.c
vrf.c vrf: don't run conntrack on vrf with !dflt qdisc 2021-12-14 11:32:36 +01:00
vsockmon.c
vxlan.c
xen-netfront.c xen/netfront: don't trust the backend response data blindly 2021-12-01 09:19:09 +01:00