dwc2_restore_essential_regs(9)

💅 dwc2_restore_essential_regs(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the ./drivers/usb/dwc2 lore, the core has been through something (power stuff, we'll get there), and now somebody has to put the essential regs back. That somebody is this function. No cap, it's giving "cleanup crew but make it silicon."

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✨ NAME ✨

dwc2_restore_essential_regs — restores the essential regs of the core 🎀

(and yes, the original says "essiential" — we're keeping the energy, the typo ate and left no crumbs 🙈)

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🌸 SYNOPSIS 🌸

void dwc2_restore_essential_regs (struct dwc2_hsotg *hsotg , int rmode ,
       int is_host );

it returns void, meaning it does not hand you back a value, it just Does The Thing and leaves. main character behavior honestly 💅

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🦋 ARGUMENTS 🦋

• hsotg — the programming view of the DWC_otg controller. this is your whole world, your context, your little guy 🫶
• rmode — the restore mode, which gets enabled in the case of remote-wakeup. remote wakeup specifically, bestie, don't generalize ✨
• is_host — host mode or device mode. you gotta tell it which one, it's not a mind reader 💀

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🔥 SEE ALSO 🔥

the whole friend group, and yes they all live in the kernel file ./drivers/usb/dwc2/core.c:

• dwc2_backup_global_registers(9)
• dwc2_restore_global_registers(9)
• dwc2_exit_partial_power_down(9)
• dwc2_enter_partial_power_down(9)
• dwc2_hib_restore_common(9)
• dwc2_wait_for_mode(9)
• dwc2_iddig_filter_enabled(9)
• dwc2_force_mode(9)
• dwc2_clear_force_mode(9)
• dwc2_dump_host_registers(9)
• dwc2_dump_global_registers(9)
• dwc2_flush_tx_fifo(9)
• dwc2_flush_rx_fifo(9)
• dwc2_enable_global_interrupts(9)
• dwc2_disable_global_interrupts(9)
• dwc2_hsotg_wait_bit_set(9)
• dwc2_hsotg_wait_bit_clear(9)

literally the entire group chat, go say hi 👑🌈

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ok that's the whole page, it's short and it slays, go read the source if you want the real tea ⭐

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kiss kiss, this came from ./drivers/usb/dwc2, dated October 2026, and the whole thing is filed under dwc2_restore_essential_regs(9) — mwah 💖🌸