dfl_fpga_check_port_id(9)

💅 dfl_fpga_check_port_id — the "is this your port?" check

okay bestie, so this one's from the Kernel API Manual (yes, the actual kernel docs, we're in the big leagues now ✨), and it's genuinely a tiny little function that does exactly one thing: it looks at a port and tells you whether the port id matches. that's it. that's the whole vibe. no cap. 🎀

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🌸 NAME 🌸

dfl_fpga_check_port_id — check the port id. literally what it says on the tin, she's not hiding anything 💅

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✨ SYNOPSIS ✨

int dfl_fpga_check_port_id (struct dfl_feature_dev_data *fdata , void
*pport_id );

so she returns an int, she takes a struct dfl_feature_dev_data *fdata and a void *pport_id, and then she's done. short queen energy 👑

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🦋 ARGUMENTS 🦋

• fdata — the port feature dev data. this is the thing you're checking against, the main character of the operation 🫶
• pport_id — the port id you want to compare. this is the one doing the vibe check on fdata.

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🔥 RETURN 🔥

• 1 if the port device matches with the given port id 💖
• 0 otherwise 🙈

that's the whole boolean situation. one or zero, no in-between, no nuance, no "it depends". she ate and left no crumbs.

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🌈 SEE ALSO 🌈

bestie there are SO many siblings, buckle up 🎀

• 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_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_get_num_irqs(9)
• dfl_feature_ioctl_set_irq(9)

like I said. a whole friend group 💀

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ngl if you got here from a port lookup and it returned 0, that's not a bug, that's just not the port you were looking for 🧚

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so yeah, that's the page! source lives in ./drivers/fpga (the kernel tree, obviously 💜), and this version is dated October 2026, tied to dfl_fpga_check_port_id(9). go forth and check those port ids, bestie — periodt. 🌸💖🎀