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USB: imx21-hcd: 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: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-05-29 17:30:54 +02:00
parent 9fc6f2203f
commit 465d3256f6
1 changed files with 10 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/usb/host/imx21-dbg.c
View File

@ -417,46 +417,22 @@ DEFINE_SHOW_ATTRIBUTE(debug_isoc);
static void create_debug_files(struct imx21 *imx21)
{
imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL);
if (!imx21->debug_root)
goto failed_create_rootdir;
struct dentry *root;
if (!debugfs_create_file("status", S_IRUGO,
imx21->debug_root, imx21, &debug_status_fops))
goto failed_create;
root = debugfs_create_dir(dev_name(imx21->dev), NULL);
imx21->debug_root = root;
if (!debugfs_create_file("dmem", S_IRUGO,
imx21->debug_root, imx21, &debug_dmem_fops))
goto failed_create;
if (!debugfs_create_file("etd", S_IRUGO,
imx21->debug_root, imx21, &debug_etd_fops))
goto failed_create;
if (!debugfs_create_file("statistics", S_IRUGO,
imx21->debug_root, imx21, &debug_statistics_fops))
goto failed_create;
if (!debugfs_create_file("isoc", S_IRUGO,
imx21->debug_root, imx21, &debug_isoc_fops))
goto failed_create;
return;
failed_create:
debugfs_remove_recursive(imx21->debug_root);
failed_create_rootdir:
imx21->debug_root = NULL;
debugfs_create_file("status", S_IRUGO, root, imx21, &debug_status_fops);
debugfs_create_file("dmem", S_IRUGO, root, imx21, &debug_dmem_fops);
debugfs_create_file("etd", S_IRUGO, root, imx21, &debug_etd_fops);
debugfs_create_file("statistics", S_IRUGO, root, imx21,
&debug_statistics_fops);
debugfs_create_file("isoc", S_IRUGO, root, imx21, &debug_isoc_fops);
}
static void remove_debug_files(struct imx21 *imx21)
{
if (imx21->debug_root) {
debugfs_remove_recursive(imx21->debug_root);
imx21->debug_root = NULL;
}
debugfs_remove_recursive(imx21->debug_root);
}
#endif