ufshcd_system_suspend(9)

🌸 NAME 🌸

ufshcd_system_suspend — system suspend callback. okay bestie, this is the ufshcd_system_suspend(9) page from the Kernel API Manual, and it's literally about the system suspend callback. slay. 💖

✨ SYNOPSIS ✨

int ufshcd_system_suspend (struct device *dev );

🫶 ARGUMENTS 🫶

• dev — Device associated with the UFS controller. that's the device you're handing over, periodt. 🫶

💤 DESCRIPTION 💤

Executed before putting the system into a sleep state in which the contents of main memory are preserved. so like, this callback runs before the system goes into that sleep state where the contents of main memory are preserved — memory stays preserved, that's the whole point. 💤

🔥 RETURN 🔥

0 for success and non-zero for failure. zero is the slay result, non-zero means something went sideways — no cap. 🔥

👑 SEE ALSO 👑

the whole friend group is linked here, including Kernel file ./drivers/ufs/core/ufshcd.c plus this iconic lineup — every single one, no skips: ufshcd_enable_intr(9), ufshcd_disable_intr(9), ufshcd_print_trs_all(9), ufshcd_print_pwr_info(9), ufshcd_wait_for_register(9), ufshcd_get_intr_mask(9), ufshcd_get_ufs_version(9), ufshcd_is_device_present(9), ufshcd_get_tr_ocs(9), ufshcd_utrl_clear(9), ufshcd_utmrl_clear(9), ufshcd_get_lists_status(9), ufshcd_get_req_rsp(9), ufshcd_is_exception_event(9), ufshcd_reset_intr_aggr(9), ufshcd_config_intr_aggr(9), ufshcd_disable_intr_aggr(9), ufshcd_enable_run_stop_reg(9), ufshcd_hba_start(9), ufshcd_is_hba_active(9), ufshcd_pm_qos_init(9), ufshcd_pm_qos_exit(9), ufshcd_pm_qos_update(9), ufshcd_set_clk_freq(9), ufshcd_scale_clks(9), ufshcd_is_devfreq_scaling_required(9), ufshcd_pause_command_processing(9), ufshcd_resume_command_processing(9), ufshcd_scale_gear(9), ufshcd_devfreq_scale(9), ufshcd_hold(9), ufshcd_send_command(9), ufshcd_copy_sense_data(9), ufshcd_copy_query_response(9), ufshcd_hba_capabilities(9), ufshcd_ready_for_uic_cmd(9), ufshcd_get_upmcrs(9), ufshcd_dispatch_uic_cmd(9), ufshcd_wait_for_uic_cmd(9), __ufshcd_send_uic_cmd(9), ufshcd_send_uic_cmd(9), ufshcd_sgl_to_prdt(9), ufshcd_map_sg(9), ufshcd_prepare_req_desc_hdr(9), ufshcd_prepare_utp_scsi_cmd_upiu(9), ufshcd_prepare_utp_query_req_upiu(9), ufshcd_compose_devman_upiu(9), ufshcd_comp_scsi_upiu(9), ufshcd_upiu_wlun_to_scsi_wlun(9), ufshcd_queuecommand(9), ufshcd_dev_cmd_completion(9), ufshcd_exec_dev_cmd(9), ufshcd_init_query(9), ufshcd_query_flag(9), ufshcd_query_attr(9), ufshcd_query_attr_retry(9), ufshcd_query_attr_qword(9), ufshcd_query_descriptor_retry(9), ufshcd_read_desc_param(9), struct uc_string_id(9), ufshcd_read_string_desc(9), ufshcd_read_unit_desc_param(9), ufshcd_memory_alloc(9), ufshcd_host_memory_configure(9), ufshcd_dme_link_startup(9), ufshcd_dme_reset(9), ufshcd_dme_enable(9), ufshcd_dme_set_attr(9), ufshcd_dme_get_attr(9), ufshcd_dme_rmw(9), ufshcd_uic_pwr_ctrl(9), ufshcd_uic_tx_eqtr(9), ufshcd_send_bsg_uic_cmd(9), ufshcd_uic_change_pwr_mode(9), ufshcd_get_max_pwr_mode(9), ufshcd_dme_change_power_mode(9), ufshcd_change_power_mode(9), ufshcd_config_pwr_mode(9), ufshcd_complete_dev_init(9), ufshcd_make_hba_operational(9), ufshcd_hba_stop(9), ufshcd_hba_execute_hce(9), ufshcd_link_startup(9), ufshcd_verify_dev_init(9), ufshcd_setup_links(9), ufshcd_lu_init(9), ufshcd_sdev_init(9), ufshcd_change_queue_depth(9), ufshcd_sdev_configure(9), ufshcd_sdev_destroy(9), ufshcd_scsi_cmd_status(9), ufshcd_transfer_rsp_status(9), ufshcd_uic_cmd_compl(9), ufshcd_compl_one_cqe(9), __ufshcd_transfer_req_compl(9), ufshcd_mcq_compl_pending_transfer(9), ufshcd_transfer_req_compl(9), ufshcd_disable_ee(9), ufshcd_enable_ee(9), ufshcd_enable_auto_bkops(9), ufshcd_disable_auto_bkops(9), ufshcd_force_reset_auto_bkops(9), ufshcd_bkops_ctrl(9), ufshcd_exception_event_handler(9), ufshcd_quirk_dl_nac_errors(9), ufshcd_abort_all(9), ufshcd_err_handler(9), ufshcd_update_uic_error(9), ufshcd_check_errors(9), ufshcd_tmc_handler(9), ufshcd_handle_mcq_cq_events(9), ufshcd_sl_intr(9), ufshcd_intr(9), ufshcd_issue_tm_cmd(9), ufshcd_issue_devman_upiu_cmd(9), ufshcd_exec_raw_upiu_cmd(9), ufshcd_advanced_rpmb_req_handler(9), ufshcd_eh_device_reset_handler(9), ufshcd_try_to_abort_task(9), ufshcd_abort(9), ufshcd_process_probe_result(9), ufshcd_host_reset_and_restore(9), ufshcd_reset_and_restore(9), ufshcd_eh_host_reset_handler(9), ufshcd_get_max_icc_level(9), ufshcd_find_max_sup_active_icc_level(9), ufshcd_scsi_add_wlus(9), ufshcd_create_device_id(9), ufshcd_quirk_tune_host_pa_tactivate(9), ufshcd_quirk_override_pa_h8time(9), ufshcd_add_lus(9), ufshcd_get_op_mode(9), ufshcd_probe_hba(9), ufshcd_async_scan(9), ufshcd_set_dev_pwr_mode(9), ufshcd_suspend(9), ufshcd_resume(9), ufshcd_system_resume(9), ufshcd_runtime_suspend(9), ufshcd_runtime_resume(9), ufshcd_remove(9), ufshcd_set_dma_mask(9), ufshcd_devres_release(9), ufshcd_alloc_host(9), ufshcd_init(9).

that's the whole page, bestie. source/version is ./drivers/ufs/core, dated October 2026, and the manual page is ufshcd_system_suspend(9). bye and stay suspended (responsibly) 🎀💅