dm: core: Guard against including dm.h in header files

Header files generally should not include header files just for a struct,
since forward declarations work just as well and reduce overhead.

Add a warning for dm.h being included, since this has crept into U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-07-19 10:15:59 -06:00 committed by Tom Rini
parent 41ba040e16
commit a0558aca55
1 changed files with 4 additions and 0 deletions

View File

@ -3,6 +3,10 @@
* Copyright (c) 2013 Google, Inc
*/
#ifdef _DM_H_
#warning "Suspect dm.h is included from a header file - please fix"
#endif
#ifndef _DM_H_
#define _DM_H_