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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/mfd/ab3100-core.c
..
..
@@ -1,6 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2007-2010 ST-Ericsson
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- * License terms: GNU General Public License (GPL) version 2
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  * Low-level core for exclusive access to the AB3100 IC on the I2C bus
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  * and some basic chip-configuration.
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  * Author: Linus Walleij <linus.walleij@stericsson.com>
..
..
@@ -498,7 +498,7 @@
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 	int i = 0;
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 	/* Get userspace string and assure termination */
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-	buf_size = min(count, (sizeof(buf)-1));
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+	buf_size = min((ssize_t)count, (ssize_t)(sizeof(buf)-1));
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 	if (copy_from_user(buf, user_buf, buf_size))
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 		return -EFAULT;
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 	buf[buf_size] = 0;
..
..
@@ -575,58 +575,27 @@
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 	.llseek = noop_llseek,
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 };
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577
 
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-static struct dentry *ab3100_dir;
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-static struct dentry *ab3100_reg_file;
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 static struct ab3100_get_set_reg_priv ab3100_get_priv;
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-static struct dentry *ab3100_get_reg_file;
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 static struct ab3100_get_set_reg_priv ab3100_set_priv;
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-static struct dentry *ab3100_set_reg_file;
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 static void ab3100_setup_debugfs(struct ab3100 *ab3100)
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 {
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-	int err;
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+	struct dentry *ab3100_dir;
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584
 
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 	ab3100_dir = debugfs_create_dir("ab3100", NULL);
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-	if (!ab3100_dir)
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-		goto exit_no_debugfs;
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586
 
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-	ab3100_reg_file = debugfs_create_file("registers",
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-				S_IRUGO, ab3100_dir, ab3100,
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-				&ab3100_registers_fops);
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-	if (!ab3100_reg_file) {
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-		err = -ENOMEM;
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-		goto exit_destroy_dir;
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-	}
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+	debugfs_create_file("registers", S_IRUGO, ab3100_dir, ab3100,
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+			    &ab3100_registers_fops);
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 	ab3100_get_priv.ab3100 = ab3100;
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 	ab3100_get_priv.mode = false;
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-	ab3100_get_reg_file = debugfs_create_file("get_reg",
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-				S_IWUSR, ab3100_dir, &ab3100_get_priv,
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-				&ab3100_get_set_reg_fops);
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-	if (!ab3100_get_reg_file) {
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-		err = -ENOMEM;
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-		goto exit_destroy_reg;
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-	}
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+	debugfs_create_file("get_reg", S_IWUSR, ab3100_dir, &ab3100_get_priv,
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+			    &ab3100_get_set_reg_fops);
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594
 
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 	ab3100_set_priv.ab3100 = ab3100;
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 	ab3100_set_priv.mode = true;
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-	ab3100_set_reg_file = debugfs_create_file("set_reg",
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-				S_IWUSR, ab3100_dir, &ab3100_set_priv,
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-				&ab3100_get_set_reg_fops);
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-	if (!ab3100_set_reg_file) {
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-		err = -ENOMEM;
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-		goto exit_destroy_get_reg;
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-	}
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-	return;
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-
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- exit_destroy_get_reg:
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-	debugfs_remove(ab3100_get_reg_file);
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- exit_destroy_reg:
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-	debugfs_remove(ab3100_reg_file);
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- exit_destroy_dir:
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-	debugfs_remove(ab3100_dir);
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- exit_no_debugfs:
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-	return;
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+	debugfs_create_file("set_reg", S_IWUSR, ab3100_dir, &ab3100_set_priv,
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+			    &ab3100_get_set_reg_fops);
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 }
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 #else
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 static inline void ab3100_setup_debugfs(struct ab3100 *ab3100)
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@@ -896,10 +865,10 @@
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 		 &ab3100->chip_name[0]);
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866
 
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 	/* Attach a second dummy i2c_client to the test register address */
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-	ab3100->testreg_client = i2c_new_dummy(client->adapter,
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+	ab3100->testreg_client = i2c_new_dummy_device(client->adapter,
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 					       client->addr + 1);
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-	if (!ab3100->testreg_client) {
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-		err = -ENOMEM;
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+	if (IS_ERR(ab3100->testreg_client)) {
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+		err = PTR_ERR(ab3100->testreg_client);
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 		goto exit_no_testreg_client;
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 	}
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