add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pps/kapi.c
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@@ -1,22 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * kernel API
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  *
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- *
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  * Copyright (C) 2005-2009   Rodolfo Giometti <giometti@linux.it>
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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
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- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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  */
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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@@ -72,7 +58,8 @@
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  * source is described by info's fields and it will have, as default PPS
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  * parameters, the ones specified into default_params.
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  *
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- * The function returns, in case of success, the PPS device. Otherwise NULL.
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+ * The function returns, in case of success, the PPS device. Otherwise
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+ * ERR_PTR(errno).
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  */
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 struct pps_device *pps_register_source(struct pps_source_info *info,
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@@ -135,7 +122,7 @@
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 pps_register_source_exit:
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 	pr_err("%s: unable to register source\n", info->name);
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-	return NULL;
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+	return ERR_PTR(err);
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 }
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 EXPORT_SYMBOL(pps_register_source);
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