write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/regulator/dbx500-prcmu.c
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@@ -1,7 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) ST-Ericsson SA 2010
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  *
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- * License Terms: GNU General Public License v2
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  * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
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  *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
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  *
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@@ -67,15 +67,13 @@
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 static struct ux500_regulator_debug {
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 	struct dentry *dir;
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-	struct dentry *status_file;
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-	struct dentry *power_state_cnt_file;
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 	struct dbx500_regulator_info *regulator_array;
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 	int num_regulators;
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 	u8 *state_before_suspend;
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 	u8 *state_after_suspend;
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 } rdebug;
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-static int ux500_regulator_power_state_cnt_print(struct seq_file *s, void *p)
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+static int ux500_regulator_power_state_cnt_show(struct seq_file *s, void *p)
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 {
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 	/* print power state count */
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 	seq_printf(s, "ux500-regulator power state count: %i\n",
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@@ -83,23 +81,9 @@
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 	return 0;
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 }
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+DEFINE_SHOW_ATTRIBUTE(ux500_regulator_power_state_cnt);
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-static int ux500_regulator_power_state_cnt_open(struct inode *inode,
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-	struct file *file)
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-{
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-	return single_open(file, ux500_regulator_power_state_cnt_print,
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-		inode->i_private);
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-}
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-
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-static const struct file_operations ux500_regulator_power_state_cnt_fops = {
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-	.open = ux500_regulator_power_state_cnt_open,
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-	.read = seq_read,
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-	.llseek = seq_lseek,
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-	.release = single_release,
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-	.owner = THIS_MODULE,
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-};
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-
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-static int ux500_regulator_status_print(struct seq_file *s, void *p)
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+static int ux500_regulator_status_show(struct seq_file *s, void *p)
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 {
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 	int i;
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@@ -122,27 +106,7 @@
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 	return 0;
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 }
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-
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-static int ux500_regulator_status_open(struct inode *inode, struct file *file)
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-{
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-	return single_open(file, ux500_regulator_status_print,
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-		inode->i_private);
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-}
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-
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-static const struct file_operations ux500_regulator_status_fops = {
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-	.open = ux500_regulator_status_open,
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-	.read = seq_read,
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-	.llseek = seq_lseek,
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-	.release = single_release,
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-	.owner = THIS_MODULE,
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-};
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-
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-int __attribute__((weak)) dbx500_regulator_testcase(
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-	struct dbx500_regulator_info *regulator_info,
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-	int num_regulators)
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-{
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-	return 0;
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-}
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+DEFINE_SHOW_ATTRIBUTE(ux500_regulator_status);
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 int
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 ux500_regulator_debug_init(struct platform_device *pdev,
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@@ -151,22 +115,14 @@
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 {
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 	/* create directory */
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 	rdebug.dir = debugfs_create_dir("ux500-regulator", NULL);
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-	if (!rdebug.dir)
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-		goto exit_no_debugfs;
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 	/* create "status" file */
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-	rdebug.status_file = debugfs_create_file("status",
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-		S_IRUGO, rdebug.dir, &pdev->dev,
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-		&ux500_regulator_status_fops);
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-	if (!rdebug.status_file)
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-		goto exit_destroy_dir;
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+	debugfs_create_file("status", S_IRUGO, rdebug.dir, &pdev->dev,
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+			    &ux500_regulator_status_fops);
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 	/* create "power-state-count" file */
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-	rdebug.power_state_cnt_file = debugfs_create_file("power-state-count",
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-		S_IRUGO, rdebug.dir, &pdev->dev,
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-		&ux500_regulator_power_state_cnt_fops);
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-	if (!rdebug.power_state_cnt_file)
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-		goto exit_destroy_status;
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+	debugfs_create_file("power-state-count", S_IRUGO, rdebug.dir,
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+			    &pdev->dev, &ux500_regulator_power_state_cnt_fops);
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 	rdebug.regulator_array = regulator_info;
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 	rdebug.num_regulators = num_regulators;
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@@ -179,19 +135,12 @@
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 	if (!rdebug.state_after_suspend)
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 		goto exit_free;
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-	dbx500_regulator_testcase(regulator_info, num_regulators);
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 	return 0;
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 exit_free:
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 	kfree(rdebug.state_before_suspend);
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 exit_destroy_power_state:
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-	debugfs_remove(rdebug.power_state_cnt_file);
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-exit_destroy_status:
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-	debugfs_remove(rdebug.status_file);
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-exit_destroy_dir:
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-	debugfs_remove(rdebug.dir);
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-exit_no_debugfs:
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-	dev_err(&pdev->dev, "failed to create debugfs entries.\n");
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+	debugfs_remove_recursive(rdebug.dir);
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 	return -ENOMEM;
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 }
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