add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/dca/dca-sysfs.c
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@@ -1,22 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the Free
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- * Software Foundation; either version 2 of the License, or (at your option)
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- * any later version.
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- *
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- * This program is distributed in the hope that it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc., 59
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- * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
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- *
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- * The full GNU General Public License is included in this distribution in the
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- * file called COPYING.
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  */
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 #include <linux/kernel.h>
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@@ -40,9 +24,7 @@
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 	cd = device_create(dca_class, dca->cd, MKDEV(0, slot + 1), NULL,
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 			   "requester%d", req_count++);
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-	if (IS_ERR(cd))
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-		return PTR_ERR(cd);
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-	return 0;
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+	return PTR_ERR_OR_ZERO(cd);
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 }
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 void dca_sysfs_remove_req(struct dca_provider *dca, int slot)