USB: minor cleanups for sysfs.c

This patch (as858) makes some minor cleanups to sysfs.c in usbcore.
Unnecessary tests are removed and a few temp variables are added.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 8f5a764..cad4fb3 100644 (file)
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -250,10 +250,7 @@ int usb_create_sysfs_dev_files(struct usb_device *udev)
                goto error;
        return 0;
 error:
-       usb_remove_ep_files(&udev->ep0);
-       device_remove_file(dev, &dev_attr_manufacturer);
-       device_remove_file(dev, &dev_attr_product);
-       device_remove_file(dev, &dev_attr_serial);
+       usb_remove_sysfs_dev_files(udev);
        return retval;
 }
 
@@ -262,14 +259,10 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev)
        struct device *dev = &udev->dev;
 
        usb_remove_ep_files(&udev->ep0);
+       device_remove_file(dev, &dev_attr_manufacturer);
+       device_remove_file(dev, &dev_attr_product);
+       device_remove_file(dev, &dev_attr_serial);
        sysfs_remove_group(&dev->kobj, &dev_attr_grp);
-
-       if (udev->manufacturer)
-               device_remove_file(dev, &dev_attr_manufacturer);
-       if (udev->product)
-               device_remove_file(dev, &dev_attr_product);
-       if (udev->serial)
-               device_remove_file(dev, &dev_attr_serial);
 }
 
 /* Interface fields */
@@ -373,33 +366,28 @@ static inline void usb_remove_intf_ep_files(struct usb_interface *intf)
 
 int usb_create_sysfs_intf_files(struct usb_interface *intf)
 {
+       struct device *dev = &intf->dev;
        struct usb_device *udev = interface_to_usbdev(intf);
        struct usb_host_interface *alt = intf->cur_altsetting;
        int retval;
 
-       retval = sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);
+       retval = sysfs_create_group(&dev->kobj, &intf_attr_grp);
        if (retval)
-               goto error;
+               return retval;
 
        if (alt->string == NULL)
                alt->string = usb_cache_string(udev, alt->desc.iInterface);
        if (alt->string)
-               retval = device_create_file(&intf->dev, &dev_attr_interface);
+               retval = device_create_file(dev, &dev_attr_interface);
        usb_create_intf_ep_files(intf, udev);
        return 0;
-error:
-       if (alt->string)
-               device_remove_file(&intf->dev, &dev_attr_interface);
-       sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
-       usb_remove_intf_ep_files(intf);
-       return retval;
 }
 
 void usb_remove_sysfs_intf_files(struct usb_interface *intf)
 {
-       usb_remove_intf_ep_files(intf);
-       sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
+       struct device *dev = &intf->dev;
 
-       if (intf->cur_altsetting->string)
-               device_remove_file(&intf->dev, &dev_attr_interface);
+       usb_remove_intf_ep_files(intf);
+       device_remove_file(dev, &dev_attr_interface);
+       sysfs_remove_group(&dev->kobj, &intf_attr_grp);
 }