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f58ac1adc7
linux/drivers/net/can
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Brian Silverman f58ac1adc7 can: m_can: Disable and ignore ELO interrupt 
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>
2021-12-07 09:09:02 +01:00
..
c_can can: c_can: fix null-ptr-deref on ioctl() 2021-09-07 08:46:58 +02:00
cc770 can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
dev can: netlink: add can_priv::do_get_auto_tdcv() to retrieve tdcv from device 2021-10-24 16:24:29 +02:00
ifi_canfd can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
m_can can: m_can: Disable and ignore ELO interrupt 2021-12-07 09:09:02 +01:00
mscan can: mscan: mpc5xxx_can: Make use of the helper function dev_err_probe() 2021-10-24 16:26:05 +02:00
peak_canfd can: peak_pciefd: pucan_handle_status(): fix a potential starvation issue in TX path 2021-06-24 08:40:10 +02:00
rcar can: rcar: drop unneeded ARM dependency 2021-10-24 16:26:04 +02:00
sja1000 can: sja1000: fix use after free in ems_pcmcia_add_card() 2021-12-07 09:08:58 +01:00
softing can: softing: Remove redundant variable ptr 2021-05-27 09:42:22 +02:00
spi can: mcp251xfd: mcp251xfd_chip_start(): fix error handling for mcp251xfd_chip_rx_int_enable() 2021-11-06 21:25:25 +01:00
usb can: peak_usb: exchange the order of information messages 2021-11-06 17:34:28 +01:00
at91_can.c can: at91/janz-ican3: replace snprintf() in show functions with sysfs_emit() 2021-10-24 16:25:42 +02:00
flexcan.c can: flexcan: Use struct_group() to zero struct flexcan_regs regions 2021-09-25 08:20:48 -07:00
grcan.c can: dev: can_free_echo_skb(): extend to return can frame length 2021-03-30 11:14:28 +02:00
janz-ican3.c can: at91/janz-ican3: replace snprintf() in show functions with sysfs_emit() 2021-10-24 16:25:42 +02:00
Kconfig can: flexcan: update Kconfig to enable coldfire 2021-07-25 11:36:29 +02:00
kvaser_pciefd.c can: kvaser_pciefd: Always disable bus load reporting 2021-03-16 08:41:26 +01:00
led.c
Makefile can: dev: move driver related infrastructure into separate subdir 2021-01-13 09:42:58 +01:00
pch_can.c can: pch_can: pch_can_rx_normal: fix use after free 2021-12-07 09:08:36 +01:00
slcan.c tty: remove file from tty_mode_ioctl 2021-09-22 16:59:13 +02:00
sun4i_can.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
ti_hecc.c can: rx-offload: add skb queue for use during ISR 2021-07-25 11:36:25 +02:00
vcan.c net: introduce CAN specific pointer in the struct net_device 2021-02-24 14:32:15 -08:00
vxcan.c net: introduce CAN specific pointer in the struct net_device 2021-02-24 14:32:15 -08:00
xilinx_can.c can: xilinx_can: xcan_remove(): remove redundant netif_napi_del() 2021-10-24 16:26:05 +02:00