omap_irq_disable_vblank(9)

💅 omap_irq_disable_vblank(9) 💅

okay so bestie, this one's from the Kernel API Manual and it's a tiny little function but it's important, so let's get into it 🫶

---

✨ NAME ✨

omap_irq_disable_vblank — literally the function that turns vblank interrupt events off, no cap 🎀

---

🌸 SYNOPSIS 🌸

void omap_irq_disable_vblank (struct drm_crtc *crtc );

ok so she takes exactly one thing and returns absolutely nothing (void, iconic, unbothered, moisturized 💅).

---

🦋 ARGUMENTS 🦋

• crtc — the DRM CRTC. that's it, that's the whole argument list. one (1) singular CRTC and she's the main character of this page 👑

---

🔥 DESCRIPTION 🔥

So the whole vibe here is: disable the vblank interrupts for crtc. simple. clean. done. ✨

BUT — and this is the part where you gotta listen, bestie — if the device doesn't have a hardware vblank counter, then this routine should be a no-op. like, it should do literally nothing. and why? because the interrupts have to stay on to keep the count accurate 😭🙈

so real talk: on hardware with no vblank counter, this function is a "do not touch" situation. the interrupts are the only thing keeping the count honest, so you cannot be out here disabling them fr fr 💀

---

🌈 SEE ALSO 🌈

• the kernel file ./drivers/gpu/drm/omapdrm/omap_irq.c — that's where she lives 🏠
• omap_irq_enable_vblank(9) — her counterpart, the one who turns the interrupts back on 🧚 (they're a matching set, iykyk)

---

and that's the whole page, bestie! 💖 this cutie came out of the ./drivers/gpu/drm/omapdrm tree, dated October 2026 — go forth and not disable vblank interrupts on counter-less hardware, mwah 🍓💜