116 	int rc;  in opal_prd_mmap()  local
132 	rc = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, size,  in opal_prd_mmap()
135 	return rc;  in opal_prd_mmap()
167 	int rc;  in opal_prd_read()  local
194 		rc = wait_event_interruptible(opal_prd_msg_wait,  in opal_prd_read()
196 		if (rc)  in opal_prd_read()
206 	rc = copy_to_user(buf, &item->msg, size);  in opal_prd_read()
207 	if (rc) {  in opal_prd_read()
230 	int rc;  in opal_prd_write()  local
238 	rc = copy_from_user(&hdr, buf, sizeof(hdr));  in opal_prd_write()
239 	if (rc)  in opal_prd_write()
248 	rc = copy_from_user(msg, buf, size);  in opal_prd_write()
249 	if (rc) {  in opal_prd_write()
254 	rc = opal_prd_msg(msg);  in opal_prd_write()
255 	if (rc) {  in opal_prd_write()
256 		pr_warn("write: opal_prd_msg returned %d\n", rc);  in opal_prd_write()
285 	int rc = 0;  in opal_prd_ioctl()  local
291 		rc = copy_to_user((void __user *)param, &info, sizeof(info));  in opal_prd_ioctl()
292 		if (rc)  in opal_prd_ioctl()
297 		rc = copy_from_user(&scom, (void __user *)param, sizeof(scom));  in opal_prd_ioctl()
298 		if (rc)  in opal_prd_ioctl()
301 		scom.rc = opal_xscom_read(scom.chip, scom.addr,  in opal_prd_ioctl()
305 				scom.chip, scom.addr, scom.data, scom.rc);  in opal_prd_ioctl()
307 		rc = copy_to_user((void __user *)param, &scom, sizeof(scom));  in opal_prd_ioctl()
308 		if (rc)  in opal_prd_ioctl()
313 		rc = copy_from_user(&scom, (void __user *)param, sizeof(scom));  in opal_prd_ioctl()
314 		if (rc)  in opal_prd_ioctl()
317 		scom.rc = opal_xscom_write(scom.chip, scom.addr, scom.data);  in opal_prd_ioctl()
319 				scom.chip, scom.addr, scom.data, scom.rc);  in opal_prd_ioctl()
321 		rc = copy_to_user((void __user *)param, &scom, sizeof(scom));  in opal_prd_ioctl()
322 		if (rc)  in opal_prd_ioctl()
327 		rc = -EINVAL;  in opal_prd_ioctl()
330 	return rc;  in opal_prd_ioctl()
392 	int rc;  in opal_prd_probe()  local
405 	rc = opal_message_notifier_register(OPAL_MSG_PRD, &opal_prd_event_nb);  in opal_prd_probe()
406 	if (rc) {  in opal_prd_probe()
408 		return rc;  in opal_prd_probe()
411 	rc = misc_register(&opal_prd_dev);  in opal_prd_probe()
412 	if (rc) {  in opal_prd_probe()
416 		return rc;  in opal_prd_probe()