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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 4AFCBC17441 for ; Wed, 13 Nov 2019 01:53:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 156D3222CD for ; Wed, 13 Nov 2019 01:53:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610028; bh=ZMIpm2eGoF1gz+prN8Rj5RSMJQK+YlymFSmMKKZXimg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2baxjHDcQRjPGds7JZnwQpjSVaGbSArBm+SBKTr+gAtr9Zn2Gdgp9+iuk7xHId80G 42OGt8FhnzEcTndEsoYdyHiMP/Q2K5HOVuMWSchpq/HoSaBp4rUSn/79ALk2TzH8i7 1uNT/4Uh5aoBfyNvbCZN4ag2QIidQDJm2FawbH08= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728671AbfKMBxq (ORCPT ); Tue, 12 Nov 2019 20:53:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:43368 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728608AbfKMBxf (ORCPT ); Tue, 12 Nov 2019 20:53:35 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 94DB32245C; Wed, 13 Nov 2019 01:53:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610014; bh=ZMIpm2eGoF1gz+prN8Rj5RSMJQK+YlymFSmMKKZXimg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A1qUoaXMmn2gGh81d06JuSEIal686YXWxsT7dj6D3TT+9gqHiW+QKT5Bs7Qlu4oaO ZFSpPUTrDSCVkvCPGGpmMgtPFhrHHOBMmBgUJX4nQYB/YTffRpsogDwSYdG3kSOrQj R2xTSAP5FqYNpsmA1sH5WHo24ilUFqQQbi+TB/sE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wolfram Sang , Jon Hunter , Wolfram Sang , Sasha Levin , linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 118/209] i2c: tegra: use core to detect 'no zero length' quirk Date: Tue, 12 Nov 2019 20:48:54 -0500 Message-Id: <20191113015025.9685-118-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191113015025.9685-1-sashal@kernel.org> References: <20191113015025.9685-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wolfram Sang [ Upstream commit c96c0f2683804b710531e7b754dcd02b5ded6d4a ] And don't reimplement in the driver. Signed-off-by: Wolfram Sang Acked-by: Jon Hunter Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-tegra.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index ef13b6ce9d8de..47d196c026ba6 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -684,9 +684,6 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, tegra_i2c_flush_fifos(i2c_dev); - if (msg->len == 0) - return -EINVAL; - i2c_dev->msg_buf = msg->buf; i2c_dev->msg_buf_remaining = msg->len; i2c_dev->msg_err = I2C_ERR_NONE; @@ -831,6 +828,7 @@ static const struct i2c_algorithm tegra_i2c_algo = { /* payload size is only 12 bit */ static const struct i2c_adapter_quirks tegra_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, .max_read_len = 4096, .max_write_len = 4096 - 12, }; -- 2.20.1