1 // SPDX-License-Identifier: GPL-2.0-or-later
40 static int surveillance_timeout = -1;
104  * --------------------------------------------------------
105  * 0-7		(8)	: rtas_error_log
106  * 8-47		(40)	: extended info
107  * 48-51	(4)	: vendor id
108  * 52-1023 (vendor specific) : location code and debug data
119 		printk(RTAS_DEBUG "%d -------- %s begin --------\n",  in printk_log_rtas()
140 			if (j == (perline-1))  in printk_log_rtas()
146 		printk(RTAS_DEBUG "%d -------- %s end ----------\n",  in printk_log_rtas()
210 	/* get length and increase count */  in pSeries_log_error()
300 			 size_t count, loff_t *ppos)  in rtas_log_read()  argument
307 	if (!buf || count < rtas_error_log_buffer_max)  in rtas_log_read()
308 		return -EINVAL;  in rtas_log_read()
310 	count = rtas_error_log_buffer_max;  in rtas_log_read()
312 	if (!access_ok(buf, count))  in rtas_log_read()
313 		return -EFAULT;  in rtas_log_read()
315 	tmp = kmalloc(count, GFP_KERNEL);  in rtas_log_read()
317 		return -ENOMEM;  in rtas_log_read()
323 		if (file->f_flags & O_NONBLOCK) {  in rtas_log_read()
325 			error = -EAGAIN;  in rtas_log_read()
331 			error = -ENODATA;  in rtas_log_read()
346 	memcpy(tmp, &rtas_log_buf[offset], count);  in rtas_log_read()
349 	rtas_log_size -= 1;  in rtas_log_read()
352 	error = copy_to_user(buf, tmp, count) ? -EFAULT : count;  in rtas_log_read()
383 	if (error == -EINVAL) {  in enable_surveillance()
389 	return -1;  in enable_surveillance()
400 		if (error == -1) {  in do_event_scan()
401 			printk(KERN_ERR "event-scan failed\n");  in do_event_scan()
421  * we call event-scan too quickly.
443 			if (surveillance_timeout != -1) {  in rtas_event_scan()
494 /* Cancel the rtas event scan work */
511 		printk(KERN_INFO "rtasd: No event-scan on system\n");  in rtas_event_scan_init()
512 		return -ENODEV;  in rtas_event_scan_init()
515 	err = of_property_read_u32(rtas.dev, "rtas-event-scan-rate", &rtas_event_scan_rate);  in rtas_event_scan_init()
517 		printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n");  in rtas_event_scan_init()
518 		return -ENODEV;  in rtas_event_scan_init()
522 		/* Broken firmware: take a rate of zero to mean don't scan */  in rtas_event_scan_init()
523 		printk(KERN_DEBUG "rtasd: scan rate is 0, not scanning\n");  in rtas_event_scan_init()
535 		return -ENOMEM;  in rtas_event_scan_init()
552 		return -ENODEV;  in rtas_init()