rio_write_config_8(9)

💅 rio_write_config_8(9) 💅

okay so welcome to the Kernel API Manual, bestie — this is the page for rio_write_config_8, and yes it does exactly what it says on the tin 🎀

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✨ NAME ✨

rio_write_config_8 — write 8 bits to configuration space 🦋

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✨ SYNOPSIS ✨

int rio_write_config_8 (struct rio_dev *rdev , u32 offset , u8 data );

like, that's the whole signature, no cap 💖

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✨ ARGUMENTS ✨

• rdev — the RIO device, aka the main character of this whole operation 👑
• offset — offset into the device configuration space, i.e. where in there you're poking 🌸
• data — the data to be written, the actual 8 bits you're sending out into the world 💫

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✨ DESCRIPTION ✨

So what it does is: it writes 8 bits of data to the specified offset within the RIO device's configuration space. That's it. That's the vibe. short, sweet, iconic, ate and left no crumbs 💅✨

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✨ SEE ALSO ✨

the kernel file is ./include/linux/rio_drv.h and here's the whole friend group 🫶:

• rio_local_read_config_32(9)
• rio_local_write_config_32(9)
• rio_local_read_config_16(9)
• rio_local_write_config_16(9)
• rio_local_read_config_8(9)
• rio_local_write_config_8(9)
• rio_read_config_32(9)
• rio_write_config_32(9)
• rio_read_config_16(9)
• rio_write_config_16(9)
• rio_read_config_8(9)
• rio_send_doorbell(9)
• rio_init_mbox_res(9)
• rio_init_dbell_res(9)
• RIO_DEVICE(9)
• rio_add_outb_message(9)
• rio_add_inb_buffer(9)
• rio_get_inb_message(9)
• rio_name(9)
• rio_get_drvdata(9)
• rio_set_drvdata(9)

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that's the whole page, go forth and write your 8 bits 🧚💜

sign-off szn: this one lives in ./include/linux and it's dated October 2026 — mwah, xoxo, bye bestie 😭💖