pci_enable_device_mem(9)

💅 pci_enable_device_mem — like, the Kernel API Manual page, bestie

okay so this is pci_enable_device_mem(9) from the Kernel API Manual, and honestly? it's giving "one little function, huge responsibilities." let's get into it 💖

---

✨ NAME ✨

pci_enable_device_mem — get a device all set up and ready to vibe with Memory space 🧚

---

🦋 SYNOPSIS 🦋

int pci_enable_device_mem (struct pci_dev *dev );

---

🌸 ARGUMENTS 🌸

• dev — the PCI device you're initializing. that's your girl right there 🫶

---

🔥 DESCRIPTION 🔥

So what does it actually do? It initializes the device before it gets used by a driver — think of it as the getting-ready-with-me moment. It asks the low-level code to enable Memory resources. And if the device was suspended? It wakes it up. not me being the alarm clock 😭

⚠️ Beware: this function can fail. lowkey important, don't skip the return value check bestie, int is not decoration 💀

---

👑 SEE ALSO 👑

kernel file ./drivers/pci/pci.c — and okay, the friend group here is massive, so buckle up 🎀

• pci_bus_max_busnr(9), pci_status_get_and_clear_errors(9), pci_dev_str_match_path(9)
• pci_dev_str_match(9), pci_find_capability(9), pci_bus_find_capability(9)
• pci_find_next_ext_capability(9), pci_find_ext_capability(9), pci_get_dsn(9)
• pci_find_next_ht_capability(9), pci_find_ht_capability(9), pci_find_vsec_capability(9)
• pci_find_dvsec_capability(9), pci_find_parent_resource(9), pci_find_resource(9)
• pci_resource_name(9), pci_wait_for_pending(9), pci_request_acs(9)
• pci_std_enable_acs(9), pci_enable_acs(9), pci_restore_bars(9)
• pci_update_current_state(9), pci_refresh_power_state(9), pci_platform_power_transition(9)
• pci_resume_bus(9), pci_power_up(9), pci_set_full_power_state(9)
• __pci_dev_set_current_state(9), pci_bus_set_current_state(9), pci_set_low_power_state(9)
• pci_set_power_state(9), pci_save_state(9), pci_restore_state(9)
• pci_store_saved_state(9), pci_load_saved_state(9), pci_load_and_free_saved_state(9)
• pci_reenable_device(9), pci_enable_device(9), pcibios_release_device(9)
• pcibios_disable_device(9), pci_disable_enabled_device(9), pci_disable_device(9)
• pcibios_set_pcie_reset_state(9), pci_set_pcie_reset_state(9), pcie_clear_root_pme_status(9)
• pci_check_pme_status(9), pci_pme_wakeup(9), pci_pme_wakeup_bus(9)
• pci_pme_capable(9), pci_pme_restore(9), pci_pme_active(9)
• __pci_enable_wake(9), pci_enable_wake(9), pci_wake_from_d3(9)
• pci_target_state(9), pci_prepare_to_sleep(9), pci_back_from_sleep(9)
• pci_finish_runtime_suspend(9), pci_dev_run_wake(9), pci_dev_need_resume(9)
• pci_dev_adjust_pme(9), pci_dev_complete_resume(9), pci_choose_state(9)
• pci_suspend_retains_context(9), pci_bridge_d3_possible(9), pci_d3cold_enable(9)
• pci_d3cold_disable(9), pci_pm_init(9), _pci_add_cap_save_buffer(9)
• pci_allocate_cap_save_buffers(9), pci_configure_ari(9), pci_acs_enabled(9)
• pci_acs_path_enabled(9), pci_acs_init(9), pci_enable_atomic_ops_to_root(9)
• pci_release_region(9), __pci_request_region(9), pci_request_region(9)
• pci_release_selected_regions(9), pci_request_selected_regions(9), pci_request_selected_regions_exclusive(9)
• pci_release_regions(9), pci_request_regions(9), pci_request_regions_exclusive(9)
• pci_remap_iospace(9), pci_unmap_iospace(9), pcibios_setup(9)
• pcibios_set_master(9), pci_set_master(9), pci_clear_master(9)
• pci_set_cacheline_size(9), pci_set_mwi(9), pci_try_set_mwi(9)
• pci_clear_mwi(9), pci_disable_parity(9), pci_intx(9)
• pci_wait_for_pending_transaction(9), pcie_flr(9), pcie_reset_flr(9)
• pci_pm_reset(9), pcie_wait_for_link_status(9), pcie_retrain_link(9)
• pcie_wait_for_link_delay(9), pcie_wait_for_link(9), pci_bridge_wait_for_secondary_bus(9)
• pci_bridge_secondary_bus_reset(9), __pci_reset_function_locked(9), pci_init_reset_methods(9)
• pci_reset_function(9), pci_reset_function_locked(9), pci_try_reset_function(9)
• pci_probe_reset_slot(9), pci_try_reset_slot(9), pci_try_reset_bus(9)
• pci_reset_bridge(9), pci_bus_error_reset(9), pci_probe_reset_bus(9)
• pci_reset_bus(9), pcix_get_max_mmrbc(9), pcix_get_mmrbc(9)
• pcix_set_mmrbc(9), pcie_get_readrq(9), pcie_set_readrq(9)
• pcie_get_mps(9), pcie_set_mps(9), pcie_bandwidth_available(9)
• pcie_get_supported_speeds(9), pcie_get_speed_cap(9), pcie_get_width_cap(9)
• pcie_bandwidth_capable(9), __pcie_print_link_status(9), pcie_print_link_status(9)
• pci_select_bars(9), pci_set_vga_state(9), pci_add_dma_alias(9)
• pci_real_dma_dev(9), pci_specified_resource_alignment(9), pci_bus_find_emul_domain_nr(9)
• pci_ext_cfg_avail(9)

like, that's the whole group chat and every single one of them is iconic in their own way 💜

---

and that's the page!! 🎀 this cutie lives in ./drivers/pci, dated October 2026, and it's pci_enable_device_mem(9) — go check your return value, i'm literally begging you 💖✨