From patchwork Wed Apr 5 15:05:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 671291 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31104C77B72 for ; Wed, 5 Apr 2023 15:06:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238680AbjDEPGJ (ORCPT ); Wed, 5 Apr 2023 11:06:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238625AbjDEPGD (ORCPT ); Wed, 5 Apr 2023 11:06:03 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56ECB6189; Wed, 5 Apr 2023 08:05:59 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 583AF1FD86; Wed, 5 Apr 2023 15:05:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1680707158; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CcTf8mY7ntiATzAyouTm9w0tlFjDMPAv2gX2WMGu6rY=; b=TZXoC9Tc9asKOSDiLT8A4tyzs9yv6RL0qTxKUbYlapBfIqym6Kb8DFLZewVwcjMnY4sxHZ o4xbCl2xTmPNnIqTmbdJgCygQ/ZtZlu+xXYmC1iYq94aqnQJSOHI9J2mNz3ymbowXdopXw tvB4wNWyF4qpMe1JvVJ9nQRsmcs5DHo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1680707158; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CcTf8mY7ntiATzAyouTm9w0tlFjDMPAv2gX2WMGu6rY=; b=qHURCE7KZgCagHrMHb7gbQv13HAZDnHLCR0bsbcvSksvT0pi3WU3s8w20ErHfpFBhmYFNn qyw83l+h4DmWvnCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id EE4A713A92; Wed, 5 Apr 2023 15:05:57 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id OJVTOVWOLWTPIAAAMHmgww (envelope-from ); Wed, 05 Apr 2023 15:05:57 +0000 From: Thomas Zimmermann 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 Subject: [PATCH 01/18] fbdev: Prepare generic architecture helpers Date: Wed, 5 Apr 2023 17:05:37 +0200 Message-Id: <20230405150554.30540-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230405150554.30540-1-tzimmermann@suse.de> References: <20230405150554.30540-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org 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_ */