dfl_feature_...get_num_irqs(9)

✨ dfl_feature_...get_num_irqs(9) ✨

okay so this is a page from the Kernel API Manual bestie, and it's all about one very specific little function 💅

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🌸 NAME 🌸

dfl_feature_ioctl_get_num_irqs — the dfl feature _GET_IRQ_NUM ioctl interface. that's it, that's the whole vibe 🎀

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🦋 SYNOPSIS 🦋

long dfl_feature_ioctl_get_num_irqs (struct platform_device *pdev ,
       struct dfl_feature *feature , unsigned long arg );

like, look at her go 😭 three whole parameters, zero notes

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💖 ARGUMENTS 💖

• pdev — the feature device that's holding the sub feature. she's the main character here 👑
• feature — the actual dfl sub feature. the little guy in question 🫶
• arg — the ioctl argument. literally just what got passed in, no cap

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⭐ RETURN ⭐

0 on success 🎉 — and a negative error code otherwise. so if it's not 0, something's giving "not slay" and you should probably go look at that 💀

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🌈 SEE ALSO 🌈

okay this list is LONG and honestly iconic, so buckle up bestie — pulling from the 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_fpga_set_irq_triggers(9)
• dfl_feature_ioctl_set_irq(9)

like I said. a whole friend group 🙈

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and that's the page!! sign-off time: this one lives over in ./drivers/fpga, dated October 2026, and it's filed under dfl_feature_...get_num_irqs(9) 💜 go read the source, iykyk 🧚✨