From patchwork Tue Jan 26 18:21:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 12048489 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10453C433E0 for ; Tue, 26 Jan 2021 22:39:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2A0F204EF for ; Tue, 26 Jan 2021 22:39:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729466AbhAZWjD (ORCPT ); Tue, 26 Jan 2021 17:39:03 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:57732 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391680AbhAZSWz (ORCPT ); Tue, 26 Jan 2021 13:22:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611685288; h=from:from:reply-to:subject:subject: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=fJzmx/FDrJMCCLLcPZO2xno8mAW17V5sI1Mz8ht2blY=; b=I+EpKpG8iGnVhd7z3gyGW8tpSsUQtm+QAegZ2x/njCGxl8uC4lkC7IB0PTJ1BRs7/d9P1A S/Tev6POPJDR0dHw/y+r7/TQ8UYshV/CPRjoaZBgcTzd7uAD6FiiGldegPApXExD8ew6EI bG0tPnQLh5h26JlwuOLx1h4gYlubWDA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-505-HIxeCZ2DNiWixeoS2pS0Ug-1; Tue, 26 Jan 2021 13:21:26 -0500 X-MC-Unique: HIxeCZ2DNiWixeoS2pS0Ug-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4A7B9801817; Tue, 26 Jan 2021 18:21:24 +0000 (UTC) Received: from t480s.redhat.com (ovpn-114-192.ams2.redhat.com [10.36.114.192]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7FA946F80A; Tue, 26 Jan 2021 18:21:21 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, David Hildenbrand , Andrew Morton , Thomas Gleixner , "Peter Zijlstra (Intel)" , Mike Rapoport , Oscar Salvador , Michal Hocko , Wei Yang , "Gustavo A. R. Silva" , Sam Ravnborg Subject: [PATCH v1 1/2] video: fbdev: acornfb: remove free_unused_pages() Date: Tue, 26 Jan 2021 19:21:12 +0100 Message-Id: <20210126182113.19892-2-david@redhat.com> In-Reply-To: <20210126182113.19892-1-david@redhat.com> References: <20210126182113.19892-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org This function is never used and it is one of the last remaining user of __free_reserved_page(). Let's just drop it. Cc: Andrew Morton Cc: Thomas Gleixner Cc: "Peter Zijlstra (Intel)" Cc: Mike Rapoport Cc: Oscar Salvador Cc: Michal Hocko Cc: Wei Yang Cc: "Gustavo A. R. Silva" Cc: Sam Ravnborg Signed-off-by: David Hildenbrand Reviewed-by: Oscar Salvador Reviewed-by: Anshuman Khandual --- drivers/video/fbdev/acornfb.c | 34 ---------------------------------- 1 file changed, 34 deletions(-) diff --git a/drivers/video/fbdev/acornfb.c b/drivers/video/fbdev/acornfb.c index bcc92aecf666..1b72edc01cfb 100644 --- a/drivers/video/fbdev/acornfb.c +++ b/drivers/video/fbdev/acornfb.c @@ -921,40 +921,6 @@ static int acornfb_detect_monitortype(void) return 4; } -/* - * This enables the unused memory to be freed on older Acorn machines. - * We are freeing memory on behalf of the architecture initialisation - * code here. - */ -static inline void -free_unused_pages(unsigned int virtual_start, unsigned int virtual_end) -{ - int mb_freed = 0; - - /* - * Align addresses - */ - virtual_start = PAGE_ALIGN(virtual_start); - virtual_end = PAGE_ALIGN(virtual_end); - - while (virtual_start < virtual_end) { - struct page *page; - - /* - * Clear page reserved bit, - * set count to 1, and free - * the page. - */ - page = virt_to_page(virtual_start); - __free_reserved_page(page); - - virtual_start += PAGE_SIZE; - mb_freed += PAGE_SIZE / 1024; - } - - printk("acornfb: freed %dK memory\n", mb_freed); -} - static int acornfb_probe(struct platform_device *dev) { unsigned long size;