From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423776Ab3FUWjM (ORCPT ); Fri, 21 Jun 2013 18:39:12 -0400 Received: from moutng.kundenserver.de ([212.227.126.187]:61583 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423636Ab3FUWiz (ORCPT ); Fri, 21 Jun 2013 18:38:55 -0400 From: Arnd Bergmann To: dri-devel@lists.freedesktop.org Subject: [PATCH] drm: always provide debugfs function prototypes Date: Sat, 22 Jun 2013 00:38:16 +0200 User-Agent: KMail/1.12.2 (Linux/3.8.0-22-generic; KDE/4.3.2; x86_64; ; ) Cc: Dave Airlie , Ben Gamari , Linux Kernel Mailing List , Linux ARM Kernel List MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201306220038.17115.arnd@arndb.de> X-Provags-ID: V02:K0:XOC8x7fUtgRU7S4wsEJRKcKIT3ewDBaWdVGaIX1BXAg RIqJmZ/eBE84DsAdiLFjH+H7xgRvXn7Kbb+7+ppwQt25VRQeUl AvNgiXaNYLgaMnlEi8DUVyHWzf2vnV5yrDJJMZMfAuYZZfnfUp MRQ0zeQ822Bj0W86o/O5sWjtpl3m1C4auQnr6ZlxHgkU3eBn3l FD6Wt9ZIvOLzoMCkY2ro6eXtU7lUWRofkqaI5EFqfjpYbfKaZ6 pTE3SZJl7FD23h7UYhtnuMF7h9uB/IenhA5OlaBe2TQ/prNcon iZCc6ugqoA2/PyKYvTrcw6dttxTdx6sPm+wV7+uiRokshv26+g 45hSUlh56W16sGc/IuNU= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It is generally considered bad style to enclose function prototypes in header files in #ifdef. This case illustrates why that is: The tegra host1x driver calls into the debugfs functions if CONFIG_DEBUG_FS is enabled, but that code is otherwise already discarded by the compiler, so leaving the prototype in place actually makes everything work. drivers/gpu/host1x/drm/dc.c: In function 'tegra_dc_debugfs_init': drivers/gpu/host1x/drm/dc.c:1004:2: error: implicit declaration of function 'drm_debugfs_create_files' [-Werror=implicit-function-declaration] drivers/gpu/host1x/drm/dc.c: In function 'tegra_dc_debugfs_exit': drivers/gpu/host1x/drm/dc.c:1026:2: error: implicit declaration of function 'drm_debugfs_remove_files' [-Werror=implicit-function-declaration] Signed-off-by: Arnd Bergmann Cc: Ben Gamari Cc: Dave Airlie diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 63d17ee..8bc105e 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1551,7 +1551,7 @@ extern int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root); extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root); /* Debugfs support */ -#if defined(CONFIG_DEBUG_FS) + extern int drm_debugfs_init(struct drm_minor *minor, int minor_id, struct dentry *root); extern int drm_debugfs_create_files(struct drm_info_list *files, int count, @@ -1559,7 +1559,6 @@ extern int drm_debugfs_create_files(struct drm_info_list *files, int count, extern int drm_debugfs_remove_files(struct drm_info_list *files, int count, struct drm_minor *minor); extern int drm_debugfs_cleanup(struct drm_minor *minor); -#endif /* Info file support */ extern int drm_name_info(struct seq_file *m, void *data);