dfl_fpga_cdev_release_port(9)

🌸 NAME 🌸

okay bestie, welcome to dfl_fpga_cdev_release_port(9) — this is the Kernel API Manual page for releasing a port platform device. slay, let’s get into it. 💅

✨ SYNOPSIS ✨

int dfl_fpga_cdev_release_port (struct dfl_fpga_cdev *cdev , int port_id
);

🎀 ARGUMENTS 🎀

• cdev — the parent container device. it’s the main-character container, no cap.
• port_id — the id of the port platform device. literally which port platform device we’re talking about.

💖 DESCRIPTION 💖

This function allows a user to release a port platform device. It’s a mandatory step before you turn a port from PF into VF for SRIOV support — yes, mandatory, so don’t skip it, bestie. 🫶

🔥 RETURN 🔥

• 0 — success, iconic, we love to see it.
• a negative error code — otherwise, aka something went sideways. 😭

👑 SEE ALSO 👑

Kernel file ./drivers/fpga/dfl.c — and then the whole friend group:

• struct dfl_dev_info(9)
• struct dfl_chardev_info(9)
• dfl_fpga_port_ops_get(9)
• dfl_fpga_port_ops_put(9)
• dfl_fpga_port_ops_add(9)
• dfl_fpga_port_ops_del(9)
• dfl_fpga_check_port_id(9)
• dfl_fpga_dev_feature_uinit(9)
• dfl_fpga_dev_feature_init(9)
• dfl_fpga_dev_ops_register(9)
• dfl_fpga_dev_ops_unregister(9)
• struct build_feature_devs_info(9)
• struct dfl_feature_info(9)
• dfh_find_param(9)
• parse_feature(9)
• dfl_fpga_enum_info_add_dfl(9)
• dfl_fpga_enum_info_add_irq(9)
• dfl_fpga_feature_devs_enumerate(9)
• dfl_fpga_feature_devs_remove(9)
• __dfl_fpga_cdev_find_port_data(9)
• dfl_fpga_cdev_assign_port(9)
• dfl_fpga_cdev_config_ports_pf(9)
• dfl_fpga_cdev_config_ports_vf(9)
• dfl_fpga_set_irq_triggers(9)
• dfl_feature_ioctl_get_num_irqs(9)
• dfl_feature_ioctl_set_irq(9)

cute sign-off: source/version is ./drivers/fpga, date is October 2026, and the page is dfl_fpga_cdev_release_port(9) — bye bestie, go release that port responsibly 💅✨