drivers/acpi/cppc_acpi.c

148 		int ret;						\
150 		ret = access_fn(cpc_ptr->cpu_id, &st_name);		\
151 		if (ret)						\
152 			return ret;					\
181 	int ret;
183 	ret = cppc_get_perf_ctrs(cpc_ptr->cpu_id, &fb_ctrs);
184 	if (ret)
185 		return ret;
213 	int ret, status;
225 	ret = readw_relaxed_poll_timeout(&generic_comm_base->status, status,
229 	if (likely(!ret)) {
232 			ret = -EIO;
235 	if (unlikely(ret))
236 		pr_err("PCC check channel failed for ss: %d. ret=%d\n",
237 		       pcc_ss_id, ret);
239 	return ret;
248 	int ret = -EIO, i;
267 		ret = check_pcc_chan(pcc_ss_id, false);
268 		if (ret)
303 				ret = -EIO;
321 	ret = mbox_send_message(pcc_ss_data->pcc_channel->mchan, &cmd);
322 	if (ret < 0) {
323 		pr_err("Err sending PCC mbox message. ss: %d cmd:%d, ret:%d\n",
324 		       pcc_ss_id, cmd, ret);
329 	ret = check_pcc_chan(pcc_ss_id, true);
335 		mbox_chan_txdone(pcc_ss_data->pcc_channel->mchan, ret);
337 		mbox_client_txdone(pcc_ss_data->pcc_channel->mchan, ret);
341 		if (unlikely(ret)) {
349 					desc->write_cmd_status = ret;
356 	return ret;
359 static void cppc_chan_tx_done(struct mbox_client *cl, void *msg, int ret)
361 	if (ret < 0)
362 		pr_debug("TX did not complete: CMD sent:%x, ret:%d\n",
363 				*(u16 *)msg, ret);
365 		pr_debug("TX completed. CMD sent:%x, ret:%d\n",
366 				*(u16 *)msg, ret);
685 	int ret = -ENODATA;
699 		ret = -ENODEV;
707 		ret = -ENOMEM;
862 	ret = acpi_get_psd(cpc_ptr, handle);
863 	if (ret)
868 		ret = register_pcc_channel(pcc_subspace_id);
869 		if (ret)
882 		ret = -EINVAL;
889 	ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
891 	if (ret) {
914 	return ret;
1155 		int ret = 0;
1167 			ret = -EIO;
1171 		return ret;
1246 	int ret = 0, regs_in_pcc = 0;
1274 			ret = -EIO;
1300 		ret = -EFAULT;
1316 	return ret;
1377 	int ret = 0, regs_in_pcc = 0;
1408 			ret = -EIO;
1427 		ret = -EFAULT;
1438 	return ret;
1453 	int ret;
1470 			ret = cpc_write(cpu, auto_sel_reg, enable);
1471 			if (ret)
1472 				return ret;
1476 			ret = cpc_write(cpu, epp_set_reg, perf_ctrls->energy_perf);
1477 			if (ret)
1478 				return ret;
1485 		ret = send_pcc_cmd(pcc_ss_id, CMD_WRITE);
1488 		ret = -ENOTSUPP;
1492 	return ret;
1520 		int ret = 0;
1533 			ret = -EIO;
1538 		return ret;
1556 	int ret = -EINVAL;
1572 			ret = cpc_write(cpu, auto_sel_reg, enable);
1573 			if (ret)
1574 				return ret;
1581 		ret = send_pcc_cmd(pcc_ss_id, CMD_WRITE);
1584 		ret = -ENOTSUPP;
1588 	return ret;
1606 	int ret = -EINVAL;
1620 		ret = cpc_write(cpu, enable_reg, enable);
1621 		if (ret)
1622 			return ret;
1628 		ret = send_pcc_cmd(pcc_ss_id, CMD_WRITE);
1630 		return ret;
1650 	int ret = 0;
1676 			ret = check_pcc_chan(pcc_ss_id, false);
1677 			if (ret) {
1679 				return ret;
1763 		ret = cpc_desc->write_cmd_status;
1765 	return ret;