of_find_prop...alue_of_size(9)

🦋 of_find_prop…alue_of_size(9) 🦋

okay so bestie, welcome to the glow-up of of_find_prop...alue_of_size, straight out of the Kernel API Manual (yes the header on the original was literally of_find_prop...alue_of_size(9) twice, the truncated name is iconic honestly, we stan a mysterious queen 💅).

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✨ NAME ✨

of_find_property_value_of_size — and that's literally it, the manpage gives us a dash and then nothing, no cap 😭 she said "my name is enough."

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🌸 SYNOPSIS 🌸

void * of_find_property_value_of_size (const struct device_node *np ,
const char *propname , u32 min , u32 max , size_t *len );

like yes she returns a void *, she's flexible, she contains multitudes 🫶

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🎀 ARGUMENTS 🎀

• np — the device node you're pulling this property value out of. your source of truth, your main character node 👑
• propname — the name of the property we're hunting for. the search term, the vibe check 🔍
• min — the minimum allowed length of the property value. she has standards.
• max — the maximum allowed length of the property value, and heads up: 0 means unlimited ✨ (zero says "no thoughts, no ceiling, go off")
• len — if it's !=NULL, the actual length gets written right here. a lil out-parameter, a lil gift 🎁

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💖 DESCRIPTION 💖

Search for a property in a device node and valid the requested size. 🦋

(that's the original wording's grammar, we're keeping the energy fr fr — the point is: you go looking for the property, and you check that its size is within the bounds you asked for. size validation, that's the whole gig.)

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🔥 RETURN 🔥

• The property value on success — slay, she ate 💅
• -EINVAL — if the property does not exist 😭 (no property, no prophecy)
• -ENODATA — if the property does not have a value 💀 (she exists but she's empty, giving ghost)
• -EOVERFLOW — if the property data is too small or too large 🙈 (goldilocks violation, neither porridge is acceptable)

ngl always check your return value, bestie — those error codes are not decorative 🌈

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🌟 SEE ALSO 🌟

Kernel file ./drivers/of/property.c, plus the whole friend group right here:

• of_property_read_bool(9)
• of_graph_is_present(9)
• of_property_count_elems_of_size(9)
• of_property_read_u8_index(9)
• of_property_read_u16_index(9)
• of_property_read_u32_index(9)
• of_property_read_u64_index(9)
• of_property_read_variable_u8_array(9)
• of_property_read_variable_u16_array(9)
• of_property_read_variable_u32_array(9)
• of_property_read_u64(9)
• of_property_read_variable_u64_array(9)
• of_property_read_string(9)
• of_property_match_string(9)
• of_property_read_string_helper(9)
• of_graph_parse_endpoint(9)
• of_graph_get_port_by_id(9)
• of_graph_get_next_port(9)
• of_graph_get_next_port_endpoint(9)
• of_graph_get_next_endpoint(9)
• of_graph_get_endpoint_by_regs(9)
• of_graph_get_remote_endpoint(9)
• of_graph_get_port_parent(9)
• of_graph_get_remote_port_parent(9)
• of_graph_get_remote_port(9)
• of_graph_get_endpoint_count(9)
• of_graph_get_port_count(9)
• of_graph_get_remote_node(9)
• parse_prop_cells(9)
• parse_suffix_prop_cells(9)
• struct supplier_bindings(9)
• of_link_property(9)

like that's the entire group chat, every single one of them 💜

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and that's the whole page!! mwah 🧚‍♀️ huge thanks to the fine folks over at ./drivers/of — this one's dated October 2026, and the original footer still signs off with of_find_prop...alue_of_size(9) so we're matching that energy, periodt. 🍓⭐💫