// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Core IEEE1394 transaction logic
*
* Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net>
*/
#include <linux/bug.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/idr.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/rculist.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <asm/byteorder.h>
#include "core.h"
#include "packet-header-definitions.h"
#include "phy-packet-definitions.h"
#include <trace/events/firewire.h>
#define HEADER_DESTINATION_IS_BROADCAST(header) \
((async_header_get_destination(header) & 0x3f) == 0x3f)
/* returns 0 if the split timeout handler is already running */
static int try_cancel_split_timeout(struct fw_transaction *t)
{
if (t->is_split_transaction)
return del_timer(&t->split_timeout_timer);
else
return 1;
}
static int close_transaction(struct fw_transaction *transaction, struct fw_card *card, int rcode,
u32 response_tstamp)
{
struct fw_transaction *t = NULL, *iter;
unsigned long flags;
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry(iter, &card->transaction_list, link) {
if (iter == transaction) {
if (!try_cancel_split_timeout(iter)) {
spin_unlock_irqrestore(&card->lock, flags);
goto timed_out;
}
list_del_init(&iter->link);
card->tlabel_mask &= ~(1ULL << iter->tlabel);
t = iter;
break;
}
}
spin_unlock_irqrestore(&card->lock, flags);
if (t) {
if (!t->with_tstamp) {
t->callback.without_tstamp(card, rcode, NULL