static int msb_reset()

in core/ms_block.c [724:769]

• 36 lines of code
• 7 McCabe index (conditional complexity)

static int msb_reset(struct msb_data *msb, bool full)
{

	bool was_parallel = msb->regs.param.system & MEMSTICK_SYS_PAM;
	struct memstick_dev *card = msb->card;
	struct memstick_host *host = card->host;
	int error;

	/* Reset the card */
	msb->regs.param.system = MEMSTICK_SYS_BAMD;

	if (full) {
		error =  host->set_param(host,
					MEMSTICK_POWER, MEMSTICK_POWER_OFF);
		if (error)
			goto out_error;

		msb_invalidate_reg_window(msb);

		error = host->set_param(host,
					MEMSTICK_POWER, MEMSTICK_POWER_ON);
		if (error)
			goto out_error;

		error = host->set_param(host,
					MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
		if (error) {
out_error:
			dbg("Failed to reset the host controller");
			msb->read_only = true;
			return -EFAULT;
		}
	}

	error = msb_run_state_machine(msb, h_msb_reset);
	if (error) {
		dbg("Failed to reset the card");
		msb->read_only = true;
		return -ENODEV;
	}

	/* Set parallel mode */
	if (was_parallel)
		msb_switch_to_parallel(msb);
	return 0;
}