void mhi_pm_st_worker()

in mhi/core/pm.c [732:794]

• 55 lines of code
• 10 McCabe index (conditional complexity)

void mhi_pm_st_worker(struct work_struct *work)
{
	struct state_transition *itr, *tmp;
	LIST_HEAD(head);
	struct mhi_controller *mhi_cntrl = container_of(work,
							struct mhi_controller,
							st_worker);
	struct device *dev = &mhi_cntrl->mhi_dev->dev;

	spin_lock_irq(&mhi_cntrl->transition_lock);
	list_splice_tail_init(&mhi_cntrl->transition_list, &head);
	spin_unlock_irq(&mhi_cntrl->transition_lock);

	list_for_each_entry_safe(itr, tmp, &head, node) {
		list_del(&itr->node);
		dev_dbg(dev, "Handling state transition: %s\n",
			TO_DEV_STATE_TRANS_STR(itr->state));

		switch (itr->state) {
		case DEV_ST_TRANSITION_PBL:
			write_lock_irq(&mhi_cntrl->pm_lock);
			if (MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state))
				mhi_cntrl->ee = mhi_get_exec_env(mhi_cntrl);
			write_unlock_irq(&mhi_cntrl->pm_lock);
			mhi_fw_load_handler(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_SBL:
			write_lock_irq(&mhi_cntrl->pm_lock);
			mhi_cntrl->ee = MHI_EE_SBL;
			write_unlock_irq(&mhi_cntrl->pm_lock);
			/*
			 * The MHI devices are only created when the client
			 * device switches its Execution Environment (EE) to
			 * either SBL or AMSS states
			 */
			mhi_create_devices(mhi_cntrl);
			if (mhi_cntrl->fbc_download)
				mhi_download_amss_image(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_MISSION_MODE:
			mhi_pm_mission_mode_transition(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_FP:
			write_lock_irq(&mhi_cntrl->pm_lock);
			mhi_cntrl->ee = MHI_EE_FP;
			write_unlock_irq(&mhi_cntrl->pm_lock);
			mhi_create_devices(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_READY:
			mhi_ready_state_transition(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_SYS_ERR:
			mhi_pm_sys_error_transition(mhi_cntrl);
			break;
		case DEV_ST_TRANSITION_DISABLE:
			mhi_pm_disable_transition(mhi_cntrl);
			break;
		default:
			break;
		}
		kfree(itr);
	}
}