From patchwork Tue Sep 12 13:48:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13381708 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 13DD8CA0EDA for ; Tue, 12 Sep 2023 13:50:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235089AbjILNu6 (ORCPT ); Tue, 12 Sep 2023 09:50:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234974AbjILNu5 (ORCPT ); Tue, 12 Sep 2023 09:50:57 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81C2110D1; Tue, 12 Sep 2023 06:50:53 -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 17EE0215D5; Tue, 12 Sep 2023 13:50:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1694526652; 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=SQtqPTO6zowJiMP7f/KbQAZIhFJEInYimmVKJDBEpdg=; b=gCQNKlwJK2JgogRQPwNMiZoL20HLA7nY/ur1AOgmWY+4r5OYVMw2GrgyZCBkj559T0vXhJ ItnEZCSXOvlGfs20XjHCf6R9eo1dNT4vH9y9dKp1ClpqXgaPe1un+niBL3SoV7TRFX9GFJ SScnw+YmQZjyA1SSH7T/TPb0CmI3wxI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1694526652; 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=SQtqPTO6zowJiMP7f/KbQAZIhFJEInYimmVKJDBEpdg=; b=9P6uStIOP1GHoMOPcxzfocUHnZKtE8jqy7gv5/j1dAtFs5ppUTfaYbw+tfkvpqLm+nCFVH 6cilOqXgJVde0NAQ== 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 D481413A3B; Tue, 12 Sep 2023 13:50:51 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id MEEkM7tsAGVKQwAAMHmgww (envelope-from ); Tue, 12 Sep 2023 13:50:51 +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 v4 1/5] fbdev: Avoid file argument in fb_pgprotect() Date: Tue, 12 Sep 2023 15:48:59 +0200 Message-ID: <20230912135050.17155-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230912135050.17155-1-tzimmermann@suse.de> References: <20230912135050.17155-1-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 Reviewed-by: Javier Martinez Canillas --- 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 5f1a2e5f76548..61e3b8806db69 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); }