omap_iommu_prepare(9)

okay so bestie, this is omap_iommu_prepare(9) from the Kernel API Manual — the lil prepare() hook for dev_pm_ops that's lowkey doing a vibe check before the PM core gets dramatic 💅✨

💖 NAME 💖

omap_iommu_prepare — the prepare() dev_pm_ops implementation. That's the whole assignment, periodt.

🎀 SYNOPSIS 🎀

int omap_iommu_prepare (struct device *dev );

🦋 ARGUMENTS 🦋

• dev — iommu device. The main character we're checking on 🫶

🌸 DESCRIPTION 🌸

Okay so this function performs the necessary checks to determine if the IOMMU device needs suspending or not. It checks if the runtime_pm status of the device is suspended, and returns 1 in that case. That return value makes the PM core skip invoking any of the Sleep PM callbacks (suspend, suspend_late, resume, resume_early, etc.). Literally “not today, callbacks” energy 😭🔥

👑 SEE ALSO 👑

• Kernel file ./drivers/iommu/omap-iommu.c
• to_omap_domain(9)
• omap_iommu_save_ctx(9)
• omap_iommu_restore_ctx(9)
• load_iotlb_entry(9)
• flush_iotlb_page(9)
• flush_iotlb_all(9)
• omap_iopgtable_store_entry(9)
• iopgtable_lookup_entry(9)
• iopgtable_clear_entry(9)
• omap_iommu_attach(9)
• omap_iommu_detach(9)
• omap_iommu_domain_deactivate(9)
• omap_iommu_domain_activate(9)
• omap_iommu_runtime_suspend(9)
• omap_iommu_runtime_resume(9)

cute sign-off: source is ./drivers/iommu, dated October 2026, page omap_iommu_prepare(9) — bye bestie, go skip those callbacks responsibly 💜🦋