ufshcd_scale_gear(9)

✨ ufshcd_scale_gear(9) ✨

okay bestie, so this is a page from the Kernel API Manual and it's literally all about ufshcd_scale_gear — the function that makes your UFS gear go up or go down 💅 no cap, it's giving main character energy for storage performance.

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🌸 NAME 🌸

ufshcd_scale_gear — scale up/down UFS gear, periodt.

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🦋 SYNOPSIS 🦋

int ufshcd_scale_gear (struct ufs_hba *hba , u32 target_gear , bool
scale_up );

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🎀 ARGUMENTS 🎀

• hba — per adapter instance. like, this is the HBA's whole setup, basically the adapter's main character energy.
• target_gear — target gear to scale to. the vibe check destination, iykyk.
• scale_up — True for scaling up gear and false for scaling down. glow up or slow down, bestie ✨

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💖 RETURN 💖

0 for success — slay!

-EBUSY if scaling can't happen at this time — not me being blocked, it's giving "try again later" 😭

non-zero for any other errors — other oopsies, fr fr.

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🔥 SEE ALSO 🔥

so this function is literally in the Kernel file ./drivers/ufs/core/ufshcd.c and it's surrounded by its whole friend group 🫶 here's the squad:

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_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_suspend(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)

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and that's the whole squad, bestie — every single one of them is literally iconic in their own way 👑

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🌸 cute lil sign-off 🌸

this page lives in ./drivers/ufs/core, and it's dated October 2026. the manual page itself is ufshcd_scale_gear(9). now go scale that gear, you absolute legend 💅✨