linux/drivers/net/can at linux-6.17.y - linux - Gitea: Git with a cup of tea

michael/linux

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Marc Kleine-Budde db1b7ae308 can: sun4i_can: sun4i_can_interrupt(): fix max irq loop handling

commit 76544beea7 upstream.

Reading the interrupt register `SUN4I_REG_INT_ADDR` causes all of its bits
to be reset. If we ever reach the condition of handling more than
`SUN4I_CAN_MAX_IRQ` IRQs, we will have read the register and reset all its
bits but without actually handling the interrupt inside of the loop body.

This may, among other issues, cause us to never `netif_wake_queue()` again
after a transmission interrupt.

Fixes: 0738eff14d ("can: Allwinner A10/A20 CAN Controller support - Kernel module")
Cc: stable@vger.kernel.org
Co-developed-by: Thomas Mühlbacher <tmuehlbacher@posteo.net>
Signed-off-by: Thomas Mühlbacher <tmuehlbacher@posteo.net>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20251116-sun4i-fix-loop-v1-1-3d76d3f81950@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-12-07 06:27:36 +09:00

..

can: c_can: Use syscon_regmap_lookup_by_phandle_args

2025-02-19 10:44:21 +01:00

can: {cc770,sja1000}_isa: allow building on x86_64

2024-11-04 17:46:06 +01:00

docs: Fix kernel-doc error in CAN driver

2025-07-25 13:09:07 +02:00

can: netlink: can_changelink(): allow disabling of automatic restart

2025-10-29 14:10:23 +01:00

can: esd: acc_start_xmit(): use can_dev_dropped_skb() instead of can_dropped_invalid_skb()

2025-10-29 14:10:19 +01:00

can: dev: add struct data_bittiming_params to group FD parameters

2025-05-21 14:33:28 +02:00

can: dev: add struct data_bittiming_params to group FD parameters

2025-05-21 14:33:28 +02:00

can: kvaser_pciefd: Add devlink port support

2025-07-25 17:55:46 +02:00

can: m_can: fix CAN state in system PM

2025-10-23 16:24:28 +02:00

can: Switch back to struct platform_driver::remove()

2024-09-11 09:37:16 +02:00

can: dev: add struct data_bittiming_params to group FD parameters

2025-05-21 14:33:28 +02:00

can: rcar_canfd: Fix CAN-FD mode as default

2025-12-07 06:27:36 +09:00

can: rockchip-canfd: rkcanfd_start_xmit(): use can_dev_dropped_skb() instead of can_dropped_invalid_skb()

2025-10-29 14:10:19 +01:00

can: sja1000: fix max irq loop handling

2025-12-07 06:27:36 +09:00

can: slcan: allow reception of short error messages

2025-05-21 10:12:05 +02:00

can: Switch back to struct platform_driver::remove()

2024-09-11 09:37:16 +02:00

can: hi311x: populate ndo_change_mtu() to prevent buffer overflow

2025-09-19 19:03:01 +02:00

can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data

2025-12-07 06:27:30 +09:00

at91_can.c

can: Switch back to struct platform_driver::remove()

2024-09-11 09:37:16 +02:00

bxcan.c

can: bxcan: bxcan_start_xmit(): use can_dev_dropped_skb() instead of can_dropped_invalid_skb()

2025-10-29 14:10:18 +01:00

can327.c

tty: use u8 for flags

2023-08-11 21:12:45 +02:00

grcan.c

treewide, timers: Rename from_timer() to timer_container_of()

2025-06-08 09:07:37 +02:00

janz-ican3.c

can: janz-ican3: use sysfs_emit() in fwinfo_show()

2025-07-15 11:41:41 +02:00

Kconfig

can: kvaser_pciefd: Add devlink support

2025-07-25 17:55:46 +02:00

Makefile

can: kvaser_pciefd: Split driver into C-file and header-file.

2025-07-25 17:53:50 +02:00

sun4i_can.c

can: sun4i_can: sun4i_can_interrupt(): fix max irq loop handling

2025-12-07 06:27:36 +09:00

ti_hecc.c

can: ti_hecc: fix -Woverflow compiler warning

2025-07-15 13:32:02 +02:00

vcan.c

net: annotate writes on dev->mtu from ndo_change_mtu()

2024-05-07 16:19:14 -07:00

vxcan.c

net: Use link/peer netns in newlink() of rtnl_link_ops

2025-02-21 15:28:02 -08:00

xilinx_can.c

can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB

2025-09-10 17:12:05 +02:00