devm_platfo...ource_byname(9)

💅 devm_platform_ioremap_resource_byname ✨

okay bestie, welcome to the Kernel API Manual 🎀 — this one's a (9) section page, which is the fancy way of saying "kernel internals, put your seatbelt on" 🦋

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🌸 NAME 🌸

devm_platform_ioremap_resource_byname — it literally calls devm_ioremap_resource for a platform device, but it goes and fetches the resource by name instead of by index. it's giving "i know exactly which one i want" energy 👑

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✨ SYNOPSIS ✨

void __iomem * devm_platform_ioremap_resource_byname (struct
       platform_device *pdev , const char *name );

that's the whole signature. two args. returns a void __iomem *. slay 💅

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🫶 ARGUMENTS 🫶

• pdev — the platform device you're working with, and the way it does double duty is iconic: it's used for the memory resource lookup and for the resource management (yes, both, same struct, main character energy 🔥)
• name — the name of the resource you're looking for. that's it. that's the string 🌸

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💖 RETURN 💖

you get back a pointer to the remapped memory 🌈 — OR, and this is the important bit, an ERR_PTR encoded error code on failure 😭 so please, for the love of everything, check it before you dereference it. no cap.

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🔍 SEE ALSO 🔍

the whole friend group, in the order the page lists them, and yes i'm listing every single one because we do not skip the boring parts here 🫶

Kernel file ./drivers/base/platform.c and then:

• platform_get_resource(9)
• devm_platform_get_and_ioremap_resource(9)
• devm_platform_ioremap_resource(9)
• platform_get_irq_affinity(9)
• platform_get_irq_optional(9)
• platform_get_irq(9)
• platform_irq_count(9)
• devm_platform_get_irqs_affinity(9)
• platform_get_resource_byname(9)
• platform_get_irq_byname(9)
• platform_get_irq_byname_optional(9)
• platform_add_devices(9)
• platform_device_put(9)
• platform_device_alloc(9)
• platform_device_add_resources(9)
• platform_device_add_data(9)
• platform_device_set_of_node(9)
• platform_device_set_fwnode(9)
• platform_device_set_of_node_from_dev(9)
• platform_device_add(9)
• platform_device_del(9)
• platform_device_register(9)
• platform_device_unregister(9)
• platform_device_register_full(9)
• __platform_driver_register(9)
• platform_driver_unregister(9)
• __platform_driver_probe(9)
• __platform_create_bundle(9)
• __platform_register_drivers(9)
• platform_unregister_drivers(9)
• platform_match(9)
• platform_find_device_by_driver(9)

like, that's the whole platform.c extended universe and honestly? obsessed 💜

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side note bestie: the page header was devm_platfo...ource_byname(9) both before and after — truncated name, full vibes. genuinely iconic of the manpage formatter 🙈

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💫 that's the page! 💫 source path ./drivers/base, dated October 2026, and it's the Kernel API Manual's devm_platfo...ource_byname(9) — bye bestie, go check your ERR_PTRs 🎀💖✨