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mfd: ab3100: no need to check return value of debugfs_create functions 

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20190706164722.18766-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2019-07-06 18:47:20 +02:00
parent 98051ba2b2
commit 45640a383a
2 changed files with 13 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/mfd/ab3100-core.c
View File

@ -575,58 +575,27 @@ static const struct file_operations ab3100_get_set_reg_fops = {
.llseek = noop_llseek,
};
static struct dentry *ab3100_dir;
static struct dentry *ab3100_reg_file;
static struct ab3100_get_set_reg_priv ab3100_get_priv;
static struct dentry *ab3100_get_reg_file;
static struct ab3100_get_set_reg_priv ab3100_set_priv;
static struct dentry *ab3100_set_reg_file;
static void ab3100_setup_debugfs(struct ab3100 *ab3100)
{
int err;
struct dentry *ab3100_dir;
ab3100_dir = debugfs_create_dir("ab3100", NULL);
if (!ab3100_dir)
goto exit_no_debugfs;
ab3100_reg_file = debugfs_create_file("registers",
S_IRUGO, ab3100_dir, ab3100,
&ab3100_registers_fops);
if (!ab3100_reg_file) {
err = -ENOMEM;
goto exit_destroy_dir;
}
debugfs_create_file("registers", S_IRUGO, ab3100_dir, ab3100,
&ab3100_registers_fops);
ab3100_get_priv.ab3100 = ab3100;
ab3100_get_priv.mode = false;
ab3100_get_reg_file = debugfs_create_file("get_reg",
S_IWUSR, ab3100_dir, &ab3100_get_priv,
&ab3100_get_set_reg_fops);
if (!ab3100_get_reg_file) {
err = -ENOMEM;
goto exit_destroy_reg;
}
debugfs_create_file("get_reg", S_IWUSR, ab3100_dir, &ab3100_get_priv,
&ab3100_get_set_reg_fops);
ab3100_set_priv.ab3100 = ab3100;
ab3100_set_priv.mode = true;
ab3100_set_reg_file = debugfs_create_file("set_reg",
S_IWUSR, ab3100_dir, &ab3100_set_priv,
&ab3100_get_set_reg_fops);
if (!ab3100_set_reg_file) {
err = -ENOMEM;
goto exit_destroy_get_reg;
}
return;
exit_destroy_get_reg:
debugfs_remove(ab3100_get_reg_file);
exit_destroy_reg:
debugfs_remove(ab3100_reg_file);
exit_destroy_dir:
debugfs_remove(ab3100_dir);
exit_no_debugfs:
return;
debugfs_create_file("set_reg", S_IWUSR, ab3100_dir, &ab3100_set_priv,
&ab3100_get_set_reg_fops);
}
#else
static inline void ab3100_setup_debugfs(struct ab3100 *ab3100)

21
drivers/mfd/ab3100-otp.c
View File

@ -122,17 +122,11 @@ static const struct file_operations ab3100_otp_operations = {
.release = single_release,
};
static int __init ab3100_otp_init_debugfs(struct device *dev,
struct ab3100_otp *otp)
static void __init ab3100_otp_init_debugfs(struct device *dev,
struct ab3100_otp *otp)
{
otp->debugfs = debugfs_create_file("ab3100_otp", S_IFREG | S_IRUGO,
NULL, otp,
&ab3100_otp_operations);
if (!otp->debugfs) {
dev_err(dev, "AB3100 debugfs OTP file registration failed!\n");
return -ENOENT;
}
return 0;
NULL, otp, &ab3100_otp_operations);
}
static void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
@ -141,10 +135,9 @@ static void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
}
#else
/* Compile this out if debugfs not selected */
static inline int __init ab3100_otp_init_debugfs(struct device *dev,
struct ab3100_otp *otp)
static inline void __init ab3100_otp_init_debugfs(struct device *dev,
struct ab3100_otp *otp)
{
return 0;
}
static inline void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
@ -211,9 +204,7 @@ static int __init ab3100_otp_probe(struct platform_device *pdev)
}
/* debugfs entries */
err = ab3100_otp_init_debugfs(&pdev->dev, otp);
if (err)
goto err;
ab3100_otp_init_debugfs(&pdev->dev, otp);
return 0;