gadget_is_dualspeed(9)

💅 gadget_is_dualspeed(9) — a page from the Kernel API Manual ✨

okay so bestie, this one is genuinely tiny but it slaps 🎀 it's a function from the Kernel API Manual that answers one very specific yes-or-no question for you, and honestly? iconic behaviour.

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🌸 NAME 🌸

gadget_is_dualspeed — returns true iff the hardware handles high speed 💫

like, "iff" is math-girl speak for "if and only if", so it's not maybe true, it's true exactly when the hardware can do the high-speed thing. no cap.

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✨ SYNOPSIS ✨

int gadget_is_dualspeed (struct usb_gadget *g );

that's it. that's the whole vibe check 🦋

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🫶 ARGUMENTS 🫶

• g — the controller that might support both high and full speeds 👀 literally the little guy you're asking about. "might" is doing a lot of work here, so bestie, that's why we call the function instead of just assuming 💅

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🔥 SEE ALSO 🔥

the whole friend group, fr fr — all of these live in the kernel file ./include/linux/usb/gadget.h 📁 and honestly the way this list goes on… main character energy:

• struct usb_request(9)
• struct usb_ep_caps(9)
• struct usb_ep(9)
• free_usb_request(9)
• struct usb_gadget(9)
• usb_ep_align(9)
• usb_ep_align_maybe(9)
• gadget_is_altset_supported(9)
• gadget_is_stall_supported(9)
• gadget_is_zlp_supported(9)
• gadget_avoids_skb_reserve(9)
• gadget_is_superspeed(9)
• gadget_is_superspeed_plus(9)
• gadget_is_otg(9)
• struct usb_gadget_driver(9)
• usb_gadget_register_driver_owner(9)
• usb_gadget_unregister_driver(9)
• struct usb_string(9)
• struct usb_gadget_strings(9)
• usb_free_descriptors(9)

like I said. the entire group chat. go read them, iykyk 💖

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🎀 sign-off 🎀

this cutie lives under ./include/linux/usb, dated October 2026, and it's filed as gadget_is_dualspeed(9) in case you need to find it again — slay, go check your gadget's speed, and drink some water 💜🦋🌸