From patchwork Wed Sep 6 14:35:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13375696 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 CC08DCA0FF6 for ; Wed, 6 Sep 2023 14:48:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241924AbjIFOsL (ORCPT ); Wed, 6 Sep 2023 10:48:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234843AbjIFOsJ (ORCPT ); Wed, 6 Sep 2023 10:48:09 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8A1B172C; Wed, 6 Sep 2023 07:48:04 -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-out1.suse.de (Postfix) with ESMTPS id A75D122432; Wed, 6 Sep 2023 14:48:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1694011683; 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=1WzZFokcrlW6NGGGLWd4i7Dg6KUabGpzZ6FiqlxPoi4=; b=TwC2rHXizbdCLcuc98kBNbY1jPzrJH8MUQ4VjQ26oB+ROml5otTq2AfT5GtpArLlOwGnht IQy9B+Jfxu2tfWgd4Lw2ZQTYf1zPfGZ597QOFz6AKfgrenZZMsGUIPSHjF0iIRJfqnvV4J xMZb5M9XnRlBS4pzz82B3DJdxuiPAlQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1694011683; 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=1WzZFokcrlW6NGGGLWd4i7Dg6KUabGpzZ6FiqlxPoi4=; b=Mc2/HGFn9HSuEP4H4Q5LcaFNnrKaCB1DbKsiLnnyglv9zCM0QPDt/cUM+rpbZCweIcrHIS PQ8ERS9CmBjknJBA== 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 6269613921; Wed, 6 Sep 2023 14:48:03 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id WBgyFyOR+GSNSgAAMHmgww (envelope-from ); Wed, 06 Sep 2023 14:48:03 +0000 From: Thomas Zimmermann To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 1/5] fbdev: Avoid file argument in fb_pgprotect() Date: Wed, 6 Sep 2023 16:35:02 +0200 Message-ID: <20230906144801.25297-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230906144801.25297-1-tzimmermann@suse.de> References: <20230906144801.25297-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Only PowerPC's fb_pgprotect() needs the file argument, although the implementation does not use it. Pass NULL to the internal helper in preparation of further updates. A later patch will remove the file parameter from fb_pgprotect(). While at it, replace the shift operation with PHYS_PFN(). Suggested-by: Christophe Leroy Signed-off-by: Thomas Zimmermann --- arch/powerpc/include/asm/fb.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h index 5f1a2e5f7654..61e3b8806db6 100644 --- a/arch/powerpc/include/asm/fb.h +++ b/arch/powerpc/include/asm/fb.h @@ -9,7 +9,12 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off) { - vma->vm_page_prot = phys_mem_access_prot(file, off >> PAGE_SHIFT, + /* + * PowerPC's implementation of phys_mem_access_prot() does + * not use the file argument. Set it to NULL in preparation + * of later updates to the interface. + */ + vma->vm_page_prot = phys_mem_access_prot(NULL, PHYS_PFN(off), vma->vm_end - vma->vm_start, vma->vm_page_prot); }