optidma_unlock(9)

✨ optidma_unlock(9) ✨

okay so bestie, this page is from the Kernel API Manual, and it's about one very specific little unlock move. no cap, it's short but important. 💅

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🌸 NAME 🌸

optidma_unlock — unlock control registers

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🎀 SYNOPSIS 🎀

void optidma_unlock (struct ata_port *ap );

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🦋 ARGUMENTS 🦋

• ap — the ATA port. that's the one and only argument, bestie. 🫶

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💖 DESCRIPTION 💖

so this function unlocks the control register block for this adapter. that's the whole vibe. 🔓✨

⚠️ but listen: registers must not be unlocked in a situation where libata might look at them. like, do not let libata catch them unlocked. that's the warning, and it is lowkey very real. 💀

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🔥 SEE ALSO 🔥

Kernel file: ./drivers/ata/pata_optidma.c

also go look at these iconic functions:

• optidma_pre_reset(9)
• optidma_lock(9)
• optidma_mode_setup(9)
• optiplus_mode_setup(9)
• optidma_set_pio_mode(9)
• optidma_set_dma_mode(9)
• optiplus_set_pio_mode(9)
• optiplus_set_dma_mode(9)
• optidma_make_bits43(9)
• optidma_set_mode(9)
• optiplus_with_udma(9)

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bye bestie 🫶 — this page lives under ./drivers/ata, and it's dated October 2026. 💋