dfl_fpga_set_irq_triggers(9)

💅 dfl_fpga_set_irq_triggers

okay so bestie, welcome to another page of the Kernel API Manual ✨ — this one's called dfl_fpga_set_irq_triggers, and it's literally the function that sets up eventfd triggers for dfl feature interrupts. no cap, that's the whole vibe. let's get into it 🫶

✨ SYNOPSIS ✨

int dfl_fpga_set_irq_triggers(struct dfl_feature *feature,
                              unsigned int start,
                              unsigned int count,
                              int32_t *fds);

🎀 ARGUMENTS 🎀

• feature — the dfl sub feature. like, the feature we're doing stuff to 💖
• start — where the irq index starts inside this dfl sub feature. the beginning, the origin, the main character's entrance 🌸
• count — how many irqs. the number. the quantity. the amount of them 💅
• fds — the eventfds we're binding to the irqs. two special cases, listen up:
  • if fds[n] is negative → unbind the related irq 🙈
  • if the fds ptr is NULL → unbind count specified number of irqs

🌈 DESCRIPTION 🌈

okay so what this does: it binds the given eventfds with irqs in this dfl sub feature. that's the whole thing. iconic behavior honestly.

and then the unbinding rules, because bestie you gotta know when to let go:

• unbind the related irq if fds[n] is negative 💀
• unbind count specified number of irqs if the fds ptr is NULL 🦋

⭐ RETURN ⭐

0 on success, negative error code otherwise. that's it. that's the whole return section. slay 💖

🔥 SEE ALSO 🔥

buckle up, this list is long and it ATE 👑

• Kernel file ./drivers/fpga/dfl.c
• 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_release_port(9)
• dfl_fpga_cdev_assign_port(9)
• dfl_fpga_cdev_config_ports_pf(9)
• dfl_fpga_cdev_config_ports_vf(9)
• dfl_feature_ioctl_get_num_irqs(9)
• dfl_feature_ioctl_set_irq(9)

bestie pls note: this page lives under the source path ./drivers/fpga, dated October 2026, and the whole thing is dfl_fpga_set_irq_triggers(9) — that's the sign-off, mwah 💋🧚✨