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USB: Turn interface_to_usbdev into an inline function

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The stronger type-checking would have prevented a bug I had.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Matthew Wilcox 2010-04-30 13:11:30 -06:00 committed by Greg Kroah-Hartman
parent fe54b058de
commit 1e429018b6
1 changed files with 5 additions and 2 deletions
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7
include/linux/usb.h
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@ -184,8 +184,6 @@ struct usb_interface {
struct work_struct reset_ws; /* for resets in atomic context */
};
#define to_usb_interface(d) container_of(d, struct usb_interface, dev)
#define interface_to_usbdev(intf) \
container_of(intf->dev.parent, struct usb_device, dev)
static inline void *usb_get_intfdata(struct usb_interface *intf)
{
@ -493,6 +491,11 @@ struct usb_device {
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)
static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf)
{
return to_usb_device(intf->dev.parent);
}
extern struct usb_device *usb_get_dev(struct usb_device *dev);
extern void usb_put_dev(struct usb_device *dev);