fwnode_irq_get(9)

💅 fwnode_irq_get(9) — Kernel API Manual

okay so bestie, we're diving into fwnode_irq_get, straight out of the Kernel API Manual ✨ and honestly? it's giving "small function, big job" energy and I'm obsessed 🎀

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🌸 NAME 🌸

fwnode_irq_get — literally just: get the IRQ directly from a fwnode 💖 no middleman, no cap.

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✨ SYNOPSIS ✨

int fwnode_irq_get (const struct fwnode_handle *fwnode , unsigned int
       index );

that's the whole vibe check right there 🦋

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🎀 ARGUMENTS 🎀

• fwnode — a pointer to the firmware node 💫 that's your main character right there
• index — the zero-based index of the IRQ 👑 so like, zero counts as the first one, don't come at me

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🌈 RETURN 🌈

Linux IRQ number on success 🥳🎉 — and a negative errno on failure 😭💀 (yes, negative, keep that in mind when you check it, ngl).

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🦋 SEE ALSO 🦋

first up, the kernel file to go peek at: ./drivers/base/property.c — that's the source of truth, bestie 🫶

and now the extended friend group 💜 — every single one of these:

• device_property_present(9)
• fwnode_property_present(9)
• device_property_read_bool(9)
• fwnode_property_read_bool(9)
• device_property_read_u8_array(9)
• device_property_read_u16_array(9)
• device_property_read_u32_array(9)
• device_property_read_u64_array(9)
• device_property_read_string_array(9)
• device_property_read_string(9)
• device_property_match_string(9)
• fwnode_property_read_u8_array(9)
• fwnode_property_read_u16_array(9)
• fwnode_property_read_u32_array(9)
• fwnode_property_read_u64_array(9)
• fwnode_property_read_string_array(9)
• fwnode_property_read_string(9)
• fwnode_property_match_string(9)
• fwnode_property_match_property_string(9)
• fwnode_property_get_reference_args(9)
• fwnode_find_reference(9)
• fwnode_get_name(9)
• fwnode_get_name_prefix(9)
• fwnode_name_eq(9)
• fwnode_get_parent(9)
• fwnode_get_next_parent(9)
• fwnode_count_parents(9)
• fwnode_get_nth_parent(9)
• fwnode_get_next_child_node(9)
• fwnode_get_next_available_child_node(9)
• device_get_next_child_node(9)
• fwnode_get_named_child_node(9)
• device_get_named_child_node(9)
• fwnode_handle_get(9)
• fwnode_device_is_available(9)
• fwnode_get_child_node_count(9)
• fwnode_get_named_child_node_count(9)
• fwnode_get_phy_mode(9)
• device_get_phy_mode(9)
• fwnode_iomap(9)
• fwnode_irq_get_byname(9)
• fwnode_graph_get_next_endpoint(9)
• fwnode_graph_get_port_parent(9)
• fwnode_graph_get_remote_port_parent(9)
• fwnode_graph_get_remote_port(9)
• fwnode_graph_get_remote_endpoint(9)
• fwnode_graph_get_endpoint_by_id(9)
• fwnode_graph_get_endpoint_count(9)
• fwnode_graph_parse_endpoint(9)
• fwnode_connection_find_match(9)
• fwnode_connection_find_matches(9)

like I said. the whole group chat 😭💖

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anyway that's the page!! mwah 💋 this one's filed under ./drivers/base and dated October 2026 — so you know exactly where it lives and when it was serving looks 🌟 byeee 🧚‍♀️💜