rt2x00usb_vendor_request(9)

💅 rt2x00usb_vendor_request(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for rt2x00usb_vendor_request, and it's literally the main-character function of talking to your device, so let's get into it 🫶

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🌸 NAME 🌸

rt2x00usb_vendor_request — send a register command to the device 📡✨

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🎀 SYNOPSIS 🎀

int rt2x00usb_vendor_request (struct rt2x00_dev *rt2x00dev , const u8
request , const u8 requesttype , const u16 offset , const u16 value ,
void *buffer , const u16 buffer_length , const int timeout );

like, yes, that's a lot of args, but every single one is pulling its weight 💪

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🦋 ARGUMENTS 🦋

• rt2x00dev — pointer to struct rt2x00_dev. that's your device, your whole vibe, the main character 🎀
• request — the USB vendor command (see enum rt2x00usb_vendor_request) 📨
• requesttype — the request type, and it's a USB_VENDOR_REQUEST_* one 🌈
• offset — the register offset you wanna perform the action on 🎯
• value — the value to write to the device ✍️
• buffer — the buffer where the device will read info from / write info to 🗂️
• buffer_length — size of that buffer, no cap 📏
• timeout — the operation timeout ⏳ (iykyk, patience is key)

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💜 DESCRIPTION 💜

so this is the main function for communicating with the device — the whole group chat goes through here 💅 the buffer argument must either be NULL or point to a buffer allocated by kmalloc. like, it's not a suggestion, bestie, it's a must.

⚠️ if you don't do that, you can get unexpected behavior — and how bad it gets depends on the architecture 😭 so like, please just kmalloc. slay responsibly 💀

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🔥 SEE ALSO 🔥

• kernel file ./drivers/net/wireless/ralink/rt2x00/rt2x00usb.h
• enum rt2x00usb_vendor_request(9)
• enum rt2x00usb_mode_offset(9)
• rt2x00usb_vendor_request_buff(9)
• rt2x00usb_vendor_request_sw(9)
• rt2x00usb_eeprom_read(9)
• rt2x00usb_register_read(9)
• rt2x00usb_register_read_lock(9)
• rt2x00usb_register_multiread(9)
• rt2x00usb_register_write(9)
• rt2x00usb_register_write_lock(9)
• rt2x00usb_register_multiwrite(9)
• rt2x00usb_regbusy_read(9)
• rt2x00usb_register_read_async(9)
• struct queue_entry_priv_usb(9)
• struct queue_entry_priv_usb_bcn(9)
• rt2x00usb_kick_queue(9)
• rt2x00usb_flush_queue(9)
• rt2x00usb_watchdog(9)

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and that's the whole page, babe 🧚✨ this came straight out of ./drivers/net/wireless/ralink/..., dated October 2026, and it's page rt2x00usb_vendor_request(9) of the Kernel API Manual — go forth and vendor-request responsibly, ily 🫶💖