wmidev_set_block(9)

💅 NAME 💅

okay so bestie, gather round — wmidev_set_block is literally the "write to a WMI data block" girlie. that's the whole vibe. she writes. to a block. iconic behavior.

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✨ SYNOPSIS ✨

int wmidev_set_block (struct wmi_device *wdev , u8 instance , const
struct wmi_buffer *in );

like, that's the signature, no cap — copy it exactly, don't @ me 🫶

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🎀 ARGUMENTS 🎀

• wdev — a wmi bus device from a driver. yes bestie, it comes from your driver, she's not out here making friends on her own 💖
• instance — the instance index. which one? the instance one. it's a u8, keep it cute.
• in — a WMI buffer containing the new values for the data block. this is the actual tea she's about to spill into the block 🍓

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🦋 DESCRIPTION 🦋

so what does she do? she writes the content of in into a WMI data block. that's it. that's the whole plot. main character energy, minimal dialogue 🌸

like — the data block is sitting there, in has the new values, and she just... puts them in. lowkey obsessed with how clean that is ngl ✨

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🌈 RETURN 🌈

• 0 on success 🎉 slay, we love a zero
• a negative error code on failure 😭 it's giving "something went wrong bestie"

fr fr, always check this one — a negative number means the vibes were NOT immaculate.

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/platform/wmi/core.c — that's where the magic happens, iykyk 💅

and here's the whole friend group, go say hi:

• wmi_instance_count(9)
• wmidev_instance_count(9)
• wmi_evaluate_method(9)
• wmidev_evaluate_method(9)
• wmidev_invoke_method(9)
• wmidev_invoke_procedure(9)
• wmi_query_block(9)
• wmidev_block_query(9)
• wmidev_query_block(9)
• wmi_set_block(9)
• wmidev_block_set(9)
• wmi_install_notify_handler(9)
• wmi_remove_notify_handler(9)
• wmi_has_guid(9)
• wmi_get_acpi_device_uid(9)
• wmi_driver_unregister(9)

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and that's the page bestie!! 🧚 this little gem comes from ./drivers/platform/wmi, dated October 2026, and she answers to the name wmidev_set_block(9) — periodt 💜🎀