USB: fotg210-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: Alan Stern <stern@rowland.harvard.edu>
Cc: Johan Hovold <johan@kernel.org>
Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@intel.com>
Cc: Vasyl Gomonovych <gomonovych@gmail.com>
Cc: Mariusz Skamra <mariuszx.skamra@intel.com>
Cc: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index d8abf401918ac457a5ba6630df1951787a7c9ee4..e64eb47770c8bb0f2b2c89d4abf9d6e3abf85140 100644 (file)
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -844,28 +844,16 @@ static int debug_registers_open(struct inode *inode, struct file *file)
 static inline void create_debug_files(struct fotg210_hcd *fotg210)
 {
        struct usb_bus *bus = &fotg210_to_hcd(fotg210)->self;
+       struct dentry *root;
 
-       fotg210->debug_dir = debugfs_create_dir(bus->bus_name,
-                       fotg210_debug_root);
-       if (!fotg210->debug_dir)
-               return;
-
-       if (!debugfs_create_file("async", S_IRUGO, fotg210->debug_dir, bus,
-                       &debug_async_fops))
-               goto file_error;
-
-       if (!debugfs_create_file("periodic", S_IRUGO, fotg210->debug_dir, bus,
-                       &debug_periodic_fops))
-               goto file_error;
+       root = debugfs_create_dir(bus->bus_name, fotg210_debug_root);
+       fotg210->debug_dir = root;
 
-       if (!debugfs_create_file("registers", S_IRUGO, fotg210->debug_dir, bus,
-                       &debug_registers_fops))
-               goto file_error;
-
-       return;
-
-file_error:
-       debugfs_remove_recursive(fotg210->debug_dir);
+       debugfs_create_file("async", S_IRUGO, root, bus, &debug_async_fops);
+       debugfs_create_file("periodic", S_IRUGO, root, bus,
+                           &debug_periodic_fops);
+       debugfs_create_file("registers", S_IRUGO, root, bus,
+                           &debug_registers_fops);
 }
 
 static inline void remove_debug_files(struct fotg210_hcd *fotg210)
@@ -5686,10 +5674,6 @@ static int __init fotg210_hcd_init(void)
                        sizeof(struct fotg210_itd));
 
        fotg210_debug_root = debugfs_create_dir("fotg210", usb_debug_root);
-       if (!fotg210_debug_root) {
-               retval = -ENOENT;
-               goto err_debug;
-       }
 
        retval = platform_driver_register(&fotg210_hcd_driver);
        if (retval < 0)
@@ -5699,7 +5683,7 @@ static int __init fotg210_hcd_init(void)
 clean:
        debugfs_remove(fotg210_debug_root);
        fotg210_debug_root = NULL;
-err_debug:
+
        clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
        return retval;
 }