pci_clear_master(9)

🎀 NAME 🎀

pci_clear_master — okay so bestie, this is the function that disables bus-mastering for device dev. That's it. That's the whole gig. She's short, she's sweet, she's a one-liner in spirit 💅

Coming at you straight from the Kernel API Manual, no cap 🫶

✨ SYNOPSIS ✨

void pci_clear_master (struct pci_dev *dev );

Literally the entire signature. Copy it exactly, spaces and all, she's sensitive about that 💖

🦋 ARGUMENTS 🦋

• dev — the PCI device to disable 💀 hand it your struct pci_dev * and the bus-mastering gets cleared for it. That's the vibe check, it passed, moving on ✨

🌈 SEE ALSO 🌈

ngl the guest list here is iconic and also kind of unhinged — it is every single PCI friend in ./drivers/pci/pci.c. Like, the whole group chat got invited. In order. No skips, no cuts, fr fr 👑

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_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_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… one hundred and thirty-nine of them. She said "invite everyone." And honestly? She ate 🔥

okay that's the whole page, you're officially caught up 🫶 this little love letter lives in ./drivers/pci, it's stamped October 2026, and it goes by pci_clear_master(9) — mwah, go clear some masters 💖✨