cdns_drd_update_mode(9)

💅 cdns_drd_update_mode — like, the Kernel API Manual, bestie

okay so real talk, this is cdns_drd_update_mode(9) from the Kernel API Manual, and honestly? she's a little function with one job and she does it. let's get into it 🎀

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✨ NAME ✨

cdns_drd_update_mode — initializes the mode of operation. that's it, that's the whole vibe. she sets the mode. iconic behavior honestly 👑

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🌸 SYNOPSIS 🌸

int cdns_drd_update_mode (struct cdns *cdns );

(yes, that space before the ) is canon, don't come for me, i copy things exactly 💖)

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🦋 ARGUMENTS 🦋

• cdns — a pointer to the controller context structure. like, the whole context. the lore. the backstory. she needs it 🫶

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⭐ DESCRIPTION ⭐

so what does she actually do? she returns 0 on success — slay, we love a clean return — otherwise you get a negative errno. that's it. no cap, that's the entire description. short king energy but make it a kernel function 😭

ngl if you get something negative back, that's your sign that things did not go off without a hitch. negative errno = not the moment. 💀

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🧚 SEE ALSO 🧚

the kernel file lives at ./drivers/usb/cdns3/drd.c and here's the whole friend group, all mutuals, all worth a follow:

• cdns_set_mode(9)
• cdns_otg_disable_irq(9)
• cdns_otg_enable_irq(9)
• cdns_drd_host_on(9)
• cdns_drd_host_off(9)
• cdns_drd_gadget_on(9)
• cdns_drd_gadget_off(9)
• cdns_init_otg_mode(9)
• cdns_drd_irq(9)

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and that's the page, bestie!! 🌈 this lil legend comes to you from ./drivers/usb/cdns3 and she's dated October 2026 — put it in your calendar, she's a Scorpio probably 💜 bye ily, go read the other ones too 🍓