add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/ab3100-otp.c
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@@ -1,8 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * drivers/mfd/ab3100_otp.c
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  *
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  * Copyright (C) 2007-2009 ST-Ericsson AB
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- * License terms: GNU General Public License (GPL) version 2
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  * Driver to read out OTP from the AB3100 Mixed-signal circuit
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  * Author: Linus Walleij <linus.walleij@stericsson.com>
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  */
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@@ -29,22 +29,22 @@
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29
 
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 /**
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  * struct ab3100_otp
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- * @dev containing device
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- * @locked whether the OTP is locked, after locking, no more bits
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+ * @dev: containing device
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+ * @locked: whether the OTP is locked, after locking, no more bits
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  *       can be changed but before locking it is still possible
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  *       to change bits from 1->0.
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- * @freq clocking frequency for the OTP, this frequency is either
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+ * @freq: clocking frequency for the OTP, this frequency is either
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  *       32768Hz or 1MHz/30
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- * @paf product activation flag, indicates whether this is a real
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+ * @paf: product activation flag, indicates whether this is a real
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  *       product (paf true) or a lab board etc (paf false)
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- * @imeich if this is set it is possible to override the
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+ * @imeich: if this is set it is possible to override the
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  *       IMEI number found in the tac, fac and svn fields with
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  *       (secured) software
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- * @cid customer ID
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- * @tac type allocation code of the IMEI
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- * @fac final assembly code of the IMEI
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- * @svn software version number of the IMEI
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- * @debugfs a debugfs file used when dumping to file
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+ * @cid: customer ID
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+ * @tac: type allocation code of the IMEI
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+ * @fac: final assembly code of the IMEI
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+ * @svn: software version number of the IMEI
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+ * @debugfs: a debugfs file used when dumping to file
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  */
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 struct ab3100_otp {
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 	struct device *dev;
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@@ -122,17 +122,11 @@
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 	.release	= single_release,
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 };
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-static int __init ab3100_otp_init_debugfs(struct device *dev,
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-					  struct ab3100_otp *otp)
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+static void __init ab3100_otp_init_debugfs(struct device *dev,
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+					   struct ab3100_otp *otp)
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 {
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 	otp->debugfs = debugfs_create_file("ab3100_otp", S_IFREG | S_IRUGO,
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-					   NULL, otp,
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-					   &ab3100_otp_operations);
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-	if (!otp->debugfs) {
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-		dev_err(dev, "AB3100 debugfs OTP file registration failed!\n");
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-		return -ENOENT;
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-	}
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-	return 0;
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+					   NULL, otp, &ab3100_otp_operations);
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 }
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 static void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
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@@ -141,10 +135,9 @@
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 }
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 #else
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 /* Compile this out if debugfs not selected */
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-static inline int __init ab3100_otp_init_debugfs(struct device *dev,
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-						 struct ab3100_otp *otp)
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+static inline void __init ab3100_otp_init_debugfs(struct device *dev,
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+						  struct ab3100_otp *otp)
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 {
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-	return 0;
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 }
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 static inline void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
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@@ -211,9 +204,7 @@
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 	}
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 	/* debugfs entries */
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-	err = ab3100_otp_init_debugfs(&pdev->dev, otp);
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-	if (err)
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-		goto err;
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+	ab3100_otp_init_debugfs(&pdev->dev, otp);
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 	return 0;
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