1 files changed, 0 insertions, 163 deletions
diff --git a/drivers/misc/ibmasm/event.c b/drivers/misc/ibmasm/event.c
deleted file mode 100644
index 3990bf2b1728..000000000000
--- a/drivers/misc/ibmasm/event.c
+++ /dev/null
@@ -1,163 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-/*
- * IBM ASM Service Processor Device Driver
- *
- * Copyright (C) IBM Corporation, 2004
- *
- * Author: Max Asböck <amax@us.ibm.com>
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include "ibmasm.h"
-#include "lowlevel.h"
-
-/*
- * ASM service processor event handling routines.
- *
- * Events are signalled to the device drivers through interrupts.
- * They have the format of dot commands, with the type field set to
- * sp_event.
- * The driver does not interpret the events, it simply stores them in a
- * circular buffer.
- */
-
-static void wake_up_event_readers(struct service_processor *sp)
-{
-	struct event_reader *reader;
-
-	list_for_each_entry(reader, &sp->event_buffer->readers, node)
-                wake_up_interruptible(&reader->wait);
-}
-
-/*
- * receive_event
- * Called by the interrupt handler when a dot command of type sp_event is
- * received.
- * Store the event in the circular event buffer, wake up any sleeping
- * event readers.
- * There is no reader marker in the buffer, therefore readers are
- * responsible for keeping up with the writer, or they will lose events.
- */
-void ibmasm_receive_event(struct service_processor *sp, void *data, unsigned int data_size)
-{
-	struct event_buffer *buffer = sp->event_buffer;
-	struct ibmasm_event *event;
-	unsigned long flags;
-
-	data_size = min(data_size, IBMASM_EVENT_MAX_SIZE);
-
-	spin_lock_irqsave(&sp->lock, flags);
-	/* copy the event into the next slot in the circular buffer */
-	event = &buffer->events[buffer->next_index];
-	memcpy_fromio(event->data, data, data_size);
-	event->data_size = data_size;
-	event->serial_number = buffer->next_serial_number;
-
-	/* advance indices in the buffer */
-	buffer->next_index = (buffer->next_index + 1) % IBMASM_NUM_EVENTS;
-	buffer->next_serial_number++;
-	spin_unlock_irqrestore(&sp->lock, flags);
-
-	wake_up_event_readers(sp);
-}
-
-static inline int event_available(struct event_buffer *b, struct event_reader *r)
-{
-	return (r->next_serial_number < b->next_serial_number);
-}
-
-/*
- * get_next_event
- * Called by event readers (initiated from user space through the file
- * system).
- * Sleeps until a new event is available.
- */
-int ibmasm_get_next_event(struct service_processor *sp, struct event_reader *reader)
-{
-	struct event_buffer *buffer = sp->event_buffer;
-	struct ibmasm_event *event;
-	unsigned int index;
-	unsigned long flags;
-
-	reader->cancelled = 0;
-
-	if (wait_event_interruptible(reader->wait,
-			event_available(buffer, reader) || reader->cancelled))
-		return -ERESTARTSYS;
-
-	if (!event_available(buffer, reader))
-		return 0;
-
-	spin_lock_irqsave(&sp->lock, flags);
-
-	index = buffer->next_index;
-	event = &buffer->events[index];
-	while (event->serial_number < reader->next_serial_number) {
-		index = (index + 1) % IBMASM_NUM_EVENTS;
-		event = &buffer->events[index];
-	}
-	memcpy(reader->data, event->data, event->data_size);
-	reader->data_size = event->data_size;
-	reader->next_serial_number = event->serial_number + 1;
-
-	spin_unlock_irqrestore(&sp->lock, flags);
-
-	return event->data_size;
-}
-
-void ibmasm_cancel_next_event(struct event_reader *reader)
-{
-        reader->cancelled = 1;
-        wake_up_interruptible(&reader->wait);
-}
-
-void ibmasm_event_reader_register(struct service_processor *sp, struct event_reader *reader)
-{
-	unsigned long flags;
-
-	reader->next_serial_number = sp->event_buffer->next_serial_number;
-	init_waitqueue_head(&reader->wait);
-	spin_lock_irqsave(&sp->lock, flags);
-	list_add(&reader->node, &sp->event_buffer->readers);
-	spin_unlock_irqrestore(&sp->lock, flags);
-}
-
-void ibmasm_event_reader_unregister(struct service_processor *sp, struct event_reader *reader)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&sp->lock, flags);
-	list_del(&reader->node);
-	spin_unlock_irqrestore(&sp->lock, flags);
-}
-
-int ibmasm_event_buffer_init(struct service_processor *sp)
-{
-	struct event_buffer *buffer;
-	struct ibmasm_event *event;
-	int i;
-
-	buffer = kmalloc_obj(struct event_buffer);
-	if (!buffer)
-		return -ENOMEM;
-
-	buffer->next_index = 0;
-	buffer->next_serial_number = 1;
-
-	event = buffer->events;
-	for (i=0; i<IBMASM_NUM_EVENTS; i++, event++)
-		event->serial_number = 0;
-
-	INIT_LIST_HEAD(&buffer->readers);
-
-	sp->event_buffer = buffer;
-
-	return 0;
-}
-
-void ibmasm_event_buffer_exit(struct service_processor *sp)
-{
-	kfree(sp->event_buffer);
-}