kernel/linux.git/drivers/net/can, branch v7.2-rc1

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2026-06-17T18:49:00+00:00

Pull virtio updates from Michael Tsirkin: - new virtio CAN driver - support for LoongArch architecture in fw_cfg - support for firmware notifications in vdpa/octeon_ep - support for VFs in virtio core - fixes, cleanups all over the place, notably: - vhost: fix vhost_get_avail_idx for a non empty ring fixing an significant old perf regression - READ_ONCE() annotations mean virtio ring is now free of KCSAN warnings * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (37 commits) can: virtio: Fix comment in UAPI header can: virtio: Add virtio CAN driver virtio: add num_vf callback to virtio_bus fw_cfg: Add support for LoongArch architecture vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler vdpa/octeon_ep: Add vDPA device event handling for firmware notifications vdpa/octeon_ep: Use 4 bytes for mailbox signature vdpa/octeon_ep: Fix PF->VF mailbox data address calculation vhost_task_create: kill unnecessary .exit_signal initialization vhost: remove unnecessary module_init/exit functions vdpa/mlx5: Use kvzalloc_flex() for MTT command memory vdpa_sim_net: switch to dynamic root device vdpa_sim_blk: switch to dynamic root device virtio-mem: Destroy mutex before freeing virtio_mem virtio-balloon: Destroy mutex before freeing virtio_balloon tools/virtio: fix build for kmalloc_obj API and missing stubs virtio_ring: Add READ_ONCE annotations for device-writable fields vduse: fix compat handling for VDUSE_IOTLB_GET_FD/VDUSE_VQ_GET_INFO tools/virtio: check mmap return value in vringh_test vhost/net: complete zerocopy ubufs only once ...

can: virtio: Add virtio CAN driver

2026-06-10T06:17:00+00:00

Add virtio CAN driver based on Virtio 1.4 specification (see https://github.com/oasis-tcs/virtio-spec/tree/virtio-1.4). The driver implements a complete CAN bus interface over Virtio transport, supporting both CAN Classic and CAN-FD Ids. In term of frames, it supports classic and CAN FD. RTR frames are only supported with classic CAN. Usage: - "ip link set up can0" - start controller - "ip link set down can0" - stop controller - "candump can0" - receive frames - "cansend can0 123#DEADBEEF" - send frames Signed-off-by: Harald Mommer Co-developed-by: Harald Mommer Signed-off-by: Mikhail Golubev-Ciuchea Co-developed-by: Marc Kleine-Budde Signed-off-by: Marc Kleine-Budde Cc: Damir Shaikhutdinov Reviewed-by: Francesco Valla Tested-by: Francesco Valla Signed-off-by: Matias Ezequiel Vara Larsen Signed-off-by: Michael S. Tsirkin Message-ID:

net: Consistently define pci_device_ids using named initializers

2026-05-13T01:16:34+00:00

... and PCI device helpers. The various struct pci_device_id arrays were initialized mostly by one the PCI_DEVICE macros and then list expressions. The latter isn't easily readable if you're not into PCI. Using named initializers is more explicit and thus easier to parse. Also use PCI_DEVICE* helper macros to assign .vendor, .device, .subvendor and .subdevice where appropriate and skip explicit assignments of 0 (which the compiler takes care of). The secret plan is to make struct pci_device_id::driver_data an anonymous union (similar to https://lore.kernel.org/all/cover.1776579304.git.u.kleine-koenig@baylibre.com/) and that requires named initializers. But it's also a nice cleanup on its own. This change doesn't introduce changes to the compiled pci_device_id arrays. Tested on x86 and arm64. Reviewed-by: Jijie Shao Acked-by: Arend van Spriel Reviewed-by: Aleksandr Loktionov Reviewed-by: Petr Machata # for mlxsw Acked-by: Jacob Keller Acked-by: Johannes Berg Signed-off-by: Uwe Kleine-König (The Capable Hub) Forwarded: id:76da4f44d48bdde84580963862bf9616bee5c9e9.1778149923.git.u.kleine-koenig@baylibre.com (v2) Reviewed-by: Michael Grzeschik Link: https://patch.msgid.link/20260511090023.1634387-6-u.kleine-koenig@baylibre.com Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-04-14T19:04:00+00:00

Merge in late fixes in preparation for the net-next PR. Conflicts: include/net/sch_generic.h a6bd339dbb351 ("net_sched: fix skb memory leak in deferred qdisc drops") ff2998f29f390 ("net: sched: introduce qdisc-specific drop reason tracing") https://lore.kernel.org/adz0iX85FHMz0HdO@sirena.org.uk drivers/net/ethernet/airoha/airoha_eth.c 1acdfbdb516b ("net: airoha: Fix VIP configuration for AN7583 SoC") bf3471e6e6c0 ("net: airoha: Make flow control source port mapping dependent on nbq parameter") Adjacent changes: drivers/net/ethernet/airoha/airoha_ppe.c f44218cd5e6a ("net: airoha: Reset PPE cpu port configuration in airoha_ppe_hw_init()") 7da62262ec96 ("inet: add ip_local_port_step_width sysctl to improve port usage distribution") Signed-off-by: Jakub Kicinski

can: ucan: fix devres lifetime

2026-04-09T16:20:34+00:00

USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind. Fixes: 9f2d3eae88d2 ("can: ucan: add driver for Theobroma Systems UCAN devices") Cc: stable@vger.kernel.org # 4.19 Cc: Jakob Unterwurzacher Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260327104520.1310158-1-johan@kernel.org Signed-off-by: Marc Kleine-Budde

can: ucan: refactor endpoint lookup

2026-04-01T07:27:58+00:00

Use the common USB helpers for looking up bulk and interrupt endpoints (and determining endpoint numbers and max packet sizes) instead of open coding. Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260330101817.1664787-3-johan@kernel.org Signed-off-by: Marc Kleine-Budde

can: kvaser_usb: leaf: refactor endpoint lookup

2026-04-01T07:27:58+00:00

Use the common USB helper for looking up bulk and interrupt endpoints instead of open coding. Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260330101817.1664787-2-johan@kernel.org Signed-off-by: Marc Kleine-Budde

can: mcp251xfd: add support for XSTBYEN transceiver standby control

2026-04-01T07:27:58+00:00

The MCP251xFD has a dedicated transceiver standby control function on the INT0/GPIO0/XSTBY pin, controlled by the XSTBYEN bit in IOCON. When enabled, the hardware automatically manages the transceiver standby state: the pin is driven low when the controller is active and high when it enters Sleep mode. Enable this feature when the 'microchip,xstbyen' device tree property is present. Signed-off-by: Viken Dadhaniya Link: https://patch.msgid.link/20260321135031.3107408-3-viken.dadhaniya@oss.qualcomm.com Signed-off-by: Marc Kleine-Budde

can: rcar_can: Convert to FIELD_MODIFY()

2026-04-01T07:27:58+00:00

Use the FIELD_MODIFY() helper instead of open-coding the same operation. Signed-off-by: Geert Uytterhoeven Link: https://patch.msgid.link/ee2e6aaacd5e061c972716ecaf8a929be7ef5f2e.1772705647.git.geert+renesas@glider.be Signed-off-by: Marc Kleine-Budde

net: can: ctucanfd: remove useless copy of PCI_DEVICE_DATA macro

2026-04-01T07:27:58+00:00

The ctucanfd driver has its own copy of the PCI_DEVICE_DATA macro. I assume this was done to support older kernel versions where it didn't exist, but that is irrelevant once the driver is in the mainline kernel. Remove it. Signed-off-by: Ethan Nelson-Moore Link: https://patch.msgid.link/20260130114134.47421-1-enelsonmoore@gmail.com Signed-off-by: Marc Kleine-Budde