From patchwork Mon Aug 17 15:12:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265955 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 E0D06C433E1 for ; Mon, 17 Aug 2020 19:38:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF30C2072E for ; Mon, 17 Aug 2020 19:38:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597693121; bh=Ev2MKrV3RTdHkwWtyN15qSAmclYuXz3Qy4/2nqB5rpE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=IUtj3hsWCqW/pJCNrH2J8buEeK+ucNWcx7S5yBa7aoNfIw8WoKTlYWFH5ZmbR7KOk sZaYy+0iK5JkZpAujDbspmDw0mthaTHgCc2/Rd/Ctos3jdvuJG+Vmr2jrDLFP8e6Zk Q1S/gHbKQoPbxZQJBzx91le8kQ94LKJZ0NybV5SY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731975AbgHQTil (ORCPT ); Mon, 17 Aug 2020 15:38:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:37342 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726630AbgHQP1G (ORCPT ); Mon, 17 Aug 2020 11:27:06 -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 61F7323A85; Mon, 17 Aug 2020 15:27:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597678024; bh=Ev2MKrV3RTdHkwWtyN15qSAmclYuXz3Qy4/2nqB5rpE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bw9m/wWPylCfFwPHmWte3B8Gq/nGWDe4S7Kqme6rnRlF9SsHdZhch5Sq9Zo/AgSsH 4ppPtzeLAZS2upJEoFOsRQjAU6ZTXFMB8QpNnVRk45bWOlvuKrbER4nCDqEjY1lKjI +8MIRDNxj/5yHOsuQLeEikStGc1AJzwQSjpvYSiE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Robert Chiras , Vinay Simha BN , Jani Nikula , Thierry Reding , Emil Velikov , Sam Ravnborg , Sasha Levin Subject: [PATCH 5.8 185/464] drm/mipi: use dcs write for mipi_dsi_dcs_set_tear_scanline Date: Mon, 17 Aug 2020 17:12:18 +0200 Message-Id: <20200817143842.686102592@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Emil Velikov [ Upstream commit 7a05c3b6d24b8460b3cec436cf1d33fac43c8450 ] The helper uses the MIPI_DCS_SET_TEAR_SCANLINE, although it's currently using the generic write. This does not look right. Perhaps some platforms don't distinguish between the two writers? Cc: Robert Chiras Cc: Vinay Simha BN Cc: Jani Nikula Cc: Thierry Reding Fixes: e83950816367 ("drm/dsi: Implement set tear scanline") Signed-off-by: Emil Velikov Reviewed-by: Thierry Reding Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200505160329.2976059-3-emil.l.velikov@gmail.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_mipi_dsi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 55531895dde6d..37b03fefbdf6f 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -1082,11 +1082,11 @@ EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format); */ int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline) { - u8 payload[3] = { MIPI_DCS_SET_TEAR_SCANLINE, scanline >> 8, - scanline & 0xff }; + u8 payload[2] = { scanline >> 8, scanline & 0xff }; ssize_t err; - err = mipi_dsi_generic_write(dsi, payload, sizeof(payload)); + err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_TEAR_SCANLINE, payload, + sizeof(payload)); if (err < 0) return err;