pci_dev_need_resume(9)
π NAME π
pci_dev_need_resume β the vibe check that tells you whether this device actually needs to be resumed. Like, do we gotta wake it up or is it fine? β¨
π SYNOPSIS π
bool pci_dev_need_resume (struct pci_dev *pci_dev );
π«Ά ARGUMENTS π«Ά
pci_devβ the device you're checking, bestie. That's the one we're asking about. π
πΈ DESCRIPTION πΈ
So this function returns 'true' when the answer is "yeah, we gotta resume it" β and that happens in any of these three situations, okay? Listen up:
- the device is not runtime-suspended, or
- it has to be reconfigured because of a wakeup settings difference between system suspend and runtime suspend, or
- the current power state of it just isn't suitable for the upcoming (system-wide) transition.
And if it's 'true', that's your sign β the device needs the resume treatment. No cap. π
π¦ SEE ALSO π¦
okay so first up, the kernel file this all lives in: ./drivers/pci/pci.c
And now, the friend group. This is a lot of friends. Buckle up π’π
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_mem(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_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)
Yeah. All of them. We're not skipping a single one, that's the rule π β¨
πΈ okay that's the whole tea, bestie β this page is from ./drivers/pci, dated October 2026. Slay, go resume some devices, and drink water π«Άππ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms