add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/firewire/core-card.c
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@@ -1,19 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (C) 2005-2007  Kristian Hoegsberg <krh@bitplanet.net>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software Foundation,
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- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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  */
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 #include <linux/bug.h>
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@@ -681,6 +668,7 @@
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 void fw_core_remove_card(struct fw_card *card)
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 {
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 	struct fw_card_driver dummy_driver = dummy_driver_template;
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+	unsigned long flags;
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 	card->driver->update_phy_reg(card, 4,
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 				     PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
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@@ -695,7 +683,9 @@
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 	dummy_driver.stop_iso		= card->driver->stop_iso;
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 	card->driver = &dummy_driver;
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+	spin_lock_irqsave(&card->lock, flags);
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 	fw_destroy_nodes(card);
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+	spin_unlock_irqrestore(&card->lock, flags);
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 	/* Wait for all users, especially device workqueue jobs, to finish. */
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 	fw_card_put(card);