From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 C5755C10F14 for ; Sun, 6 Oct 2019 17:23:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9D9382166E for ; Sun, 6 Oct 2019 17:23:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382607; bh=W6QghoyZXk8Hl3WCgfDzrIHNelWpAuCRcKjsOjXwCMg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=r7NasoD5p5yydCHpiOy87t7ucrcCH+8yekcqbj+RmTuyWD24fOk1nqQUFCG8TIpKD MCcqzZ2SJEbg0Qo0emYTo1GYs1QoJT2Jx2gBrxwd7ijHa6ayEYFXpkqjmWxn/b8gRF TJG3eU5ut5A50mXC6BNfxejO3ivU7Aafig78lIXI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727573AbfJFRXY (ORCPT ); Sun, 6 Oct 2019 13:23:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:47890 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727565AbfJFRXX (ORCPT ); Sun, 6 Oct 2019 13:23:23 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BD36721872; Sun, 6 Oct 2019 17:23:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382603; bh=W6QghoyZXk8Hl3WCgfDzrIHNelWpAuCRcKjsOjXwCMg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mL00tqHy7Q73H4XE9/k8pVo6OEgK8CZRhoHjCf1dKs367CjRNFcz96e8shOyFUSWi tMk2FpGTc2gRSXqDZ0z8E/TrZrzOquHPTACNawdk2BTWVz9tVPwv1c4pKELZc3aImx lTijSW/hZTrtX+GDKEEnOdObLeQyFzZOpgZJvQyI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marko Kohtala , Mark Rutland , Rob Herring , Daniel Vetter , David Airlie , =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= , Bartlomiej Zolnierkiewicz , Sasha Levin Subject: [PATCH 4.9 02/47] video: ssd1307fb: Start page range at page_offset Date: Sun, 6 Oct 2019 19:20:49 +0200 Message-Id: <20191006172017.017173555@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006172016.873463083@linuxfoundation.org> References: <20191006172016.873463083@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Marko Kohtala [ Upstream commit dd9782834dd9dde3624ff1acea8859f3d3e792d4 ] The page_offset was only applied to the end of the page range. This caused the display updates to cause a scrolling effect on the display because the amount of data written to the display did not match the range display expected. Fixes: 301bc0675b67 ("video: ssd1307fb: Make use of horizontal addressing mode") Signed-off-by: Marko Kohtala Cc: Mark Rutland Cc: Rob Herring Cc: Daniel Vetter Cc: David Airlie Cc: Michal Vokáč Signed-off-by: Bartlomiej Zolnierkiewicz Link: https://patchwork.freedesktop.org/patch/msgid/20190618074111.9309-4-marko.kohtala@okoko.fi Signed-off-by: Sasha Levin --- drivers/video/fbdev/ssd1307fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 2925d5ce8d3e5..1267b93c03bd0 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -430,7 +430,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) if (ret < 0) return ret; - ret = ssd1307fb_write_cmd(par->client, 0x0); + ret = ssd1307fb_write_cmd(par->client, par->page_offset); if (ret < 0) return ret; -- 2.20.1