From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Zimmermann Date: Wed, 05 Apr 2023 15:05:37 +0000 Subject: [PATCH 01/18] fbdev: Prepare generic architecture helpers Message-Id: <20230405150554.30540-2-tzimmermann@suse.de> List-Id: References: <20230405150554.30540-1-tzimmermann@suse.de> In-Reply-To: <20230405150554.30540-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: arnd@arndb.de, daniel.vetter@ffwll.ch, deller@gmx.de, javierm@redhat.com, gregkh@linuxfoundation.org Cc: linux-arch@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, Thomas Zimmermann Generic implementations of fb_pgprotect() and fb_is_primary_device() have been in the source code for a long time. Prepare the header file to make use of them. Improve the code by using an inline function for fb_pgprotect() and by removing include statements. Symbols are protected by preprocessor guards. Architectures that provide a symbol need to define a preprocessor token of the same name and value. Otherwise the header file will provide a generic implementation. This pattern has been taken from . Signed-off-by: Thomas Zimmermann --- include/asm-generic/fb.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/fb.h b/include/asm-generic/fb.h index f9f18101ed36..cb42166e7e11 100644 --- a/include/asm-generic/fb.h +++ b/include/asm-generic/fb.h @@ -1,13 +1,29 @@ /* SPDX-License-Identifier: GPL-2.0 */ + #ifndef __ASM_GENERIC_FB_H_ #define __ASM_GENERIC_FB_H_ -#include -#define fb_pgprotect(...) do {} while (0) +/* + * Only include this header file from your architecture's . + */ + +struct fb_info; +struct file; +struct vm_area_struct; + +#ifndef fb_pgprotect +#define fb_pgprotect fb_pgprotect +static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, + unsigned long off) +{ } +#endif +#ifndef fb_is_primary_device +#define fb_is_primary_device fb_is_primary_device static inline int fb_is_primary_device(struct fb_info *info) { return 0; } +#endif #endif /* __ASM_GENERIC_FB_H_ */ -- 2.40.0