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Example output: $ devlink dev pci/0000:07:00.0 pci/0000:08:00.0 pci/0000:09:00.0 $ devlink dev info pci/0000:07:00.0: driver kvaser_pciefd pci/0000:08:00.0: driver kvaser_pciefd pci/0000:09:00.0: driver kvaser_pciefd Reviewed-by: Vincent Mailhol Signed-off-by: Jimmy Assarsson --- Changes in v4: - Include kvaser_picefd.h to avoid transient Sparse warning reported by Simon Horman [2] - Add tag Reviewed-by Vincent Mailhol Changes in v2: - Add two space indentation to terminal output. Suggested by Vincent Mailhol [1] [1] https://lore.kernel.org/linux-can/20250723083236.9-1-extja@kvaser.com/T/#m31ee4aad13ee29d5559b56fdce842609ae4f67c5 [2] https://lore.kernel.org/linux-can/20250725-furry-precise-jerboa-d9e29d-mkl@pengutronix.de/T/#mbdd00e79c5765136b0a91cf38f0814a46c50a09b drivers/net/can/Kconfig | 1 + drivers/net/can/kvaser_pciefd/Makefile | 2 +- drivers/net/can/kvaser_pciefd/kvaser_pciefd.h | 2 ++ .../net/can/kvaser_pciefd/kvaser_pciefd_core.c | 15 ++++++++++++--- .../net/can/kvaser_pciefd/kvaser_pciefd_devlink.c | 11 +++++++++++ 5 files changed, 27 insertions(+), 4 deletions(-) create mode 100644 drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index cf989bea9aa3..b37d80bf7270 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -154,6 +154,7 @@ config CAN_JANZ_ICAN3 config CAN_KVASER_PCIEFD depends on PCI tristate "Kvaser PCIe FD cards" + select NET_DEVLINK help This is a driver for the Kvaser PCI Express CAN FD family. diff --git a/drivers/net/can/kvaser_pciefd/Makefile b/drivers/net/can/kvaser_pciefd/Makefile index ea1bf1000760..8c5b8cdc6b5f 100644 --- a/drivers/net/can/kvaser_pciefd/Makefile +++ b/drivers/net/can/kvaser_pciefd/Makefile @@ -1,3 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_CAN_KVASER_PCIEFD) += kvaser_pciefd.o -kvaser_pciefd-y = kvaser_pciefd_core.o +kvaser_pciefd-y = kvaser_pciefd_core.o kvaser_pciefd_devlink.o diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h b/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h index 55bb7e078340..34ba393d6093 100644 --- a/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h @@ -13,6 +13,7 @@ #include #include #include +#include #define KVASER_PCIEFD_MAX_CAN_CHANNELS 8UL #define KVASER_PCIEFD_DMA_COUNT 2U @@ -87,4 +88,5 @@ struct kvaser_pciefd { struct kvaser_pciefd_fw_version fw_version; }; +extern const struct devlink_ops kvaser_pciefd_devlink_ops; #endif /* _KVASER_PCIEFD_H */ diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c index 97cbe07c4ee3..60c72ab0a5d8 100644 --- a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c @@ -1751,14 +1751,16 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, const struct pci_device_id *id) { int ret; + struct devlink *devlink; struct device *dev = &pdev->dev; struct kvaser_pciefd *pcie; const struct kvaser_pciefd_irq_mask *irq_mask; - pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); - if (!pcie) + devlink = devlink_alloc(&kvaser_pciefd_devlink_ops, sizeof(*pcie), dev); + if (!devlink) return -ENOMEM; + pcie = devlink_priv(devlink); pci_set_drvdata(pdev, pcie); pcie->pci = pdev; pcie->driver_data = (const struct kvaser_pciefd_driver_data *)id->driver_data; @@ -1766,7 +1768,7 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, ret = pci_enable_device(pdev); if (ret) - return ret; + goto err_free_devlink; ret = pci_request_regions(pdev, KVASER_PCIEFD_DRV_NAME); if (ret) @@ -1830,6 +1832,8 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, if (ret) goto err_free_irq; + devlink_register(devlink); + return 0; err_free_irq: @@ -1853,6 +1857,9 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, err_disable_pci: pci_disable_device(pdev); +err_free_devlink: + devlink_free(devlink); + return ret; } @@ -1876,6 +1883,8 @@ static void kvaser_pciefd_remove(struct pci_dev *pdev) for (i = 0; i < pcie->nr_channels; ++i) free_candev(pcie->can[i]->can.dev); + devlink_unregister(priv_to_devlink(pcie)); + devlink_free(priv_to_devlink(pcie)); pci_iounmap(pdev, pcie->reg_base); pci_release_regions(pdev); pci_disable_device(pdev); diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c new file mode 100644 index 000000000000..7c2040ed53d7 --- /dev/null +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +/* kvaser_pciefd devlink functions + * + * Copyright (C) 2025 KVASER AB, Sweden. All rights reserved. + */ +#include "kvaser_pciefd.h" + +#include + +const struct devlink_ops kvaser_pciefd_devlink_ops = { +}; -- 2.49.0