static int pcc_parse_subspace_db_reg()

in pcc.c [492:540]

• 40 lines of code
• 5 McCabe index (conditional complexity)

static int pcc_parse_subspace_db_reg(struct pcc_chan_info *pchan,
				     struct acpi_subtable_header *pcct_entry)
{
	int ret = 0;

	if (pcct_entry->type <= ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2) {
		struct acpi_pcct_subspace *pcct_ss;

		pcct_ss = (struct acpi_pcct_subspace *)pcct_entry;

		ret = pcc_chan_reg_init(&pchan->db,
					&pcct_ss->doorbell_register,
					pcct_ss->preserve_mask,
					pcct_ss->write_mask, 0,	"Doorbell");

	} else {
		struct acpi_pcct_ext_pcc_master *pcct_ext;

		pcct_ext = (struct acpi_pcct_ext_pcc_master *)pcct_entry;

		ret = pcc_chan_reg_init(&pchan->db,
					&pcct_ext->doorbell_register,
					pcct_ext->preserve_mask,
					pcct_ext->write_mask, 0, "Doorbell");
		if (ret)
			return ret;

		ret = pcc_chan_reg_init(&pchan->cmd_complete,
					&pcct_ext->cmd_complete_register,
					0, 0, pcct_ext->cmd_complete_mask,
					"Command Complete Check");
		if (ret)
			return ret;

		ret = pcc_chan_reg_init(&pchan->cmd_update,
					&pcct_ext->cmd_update_register,
					pcct_ext->cmd_update_preserve_mask,
					pcct_ext->cmd_update_set_mask, 0,
					"Command Complete Update");
		if (ret)
			return ret;

		ret = pcc_chan_reg_init(&pchan->error,
					&pcct_ext->error_status_register,
					0, 0, pcct_ext->error_status_mask,
					"Error Status");
	}
	return ret;
}