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,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 0173AC432C0 for ; Fri, 22 Nov 2019 11:01:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BDBA72077B for ; Fri, 22 Nov 2019 11:01:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574420508; bh=8Gh9QFWIcV8gouhNwtcnLmaTG574i/mtCXf99Tt1wrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=plIEfP2sbUU3cRuBhlGFbDq0VURpGMGCZg+v7Q2g2vKBo6ZaFVZ74+n5p9kakYk4c meDKW8mShUabJIfbhZRuRnvx0lbvKsoGFga5ZZgaB4Nl6WjA2jNsz8TzZCY9f7B2ej OeDLd4Sm4rlEoNy0D9+wnER58y+RvT30WrxO++uw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730934AbfKVLBq (ORCPT ); Fri, 22 Nov 2019 06:01:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:54912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731227AbfKVLBp (ORCPT ); Fri, 22 Nov 2019 06:01:45 -0500 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 2952120721; Fri, 22 Nov 2019 11:01:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574420504; bh=8Gh9QFWIcV8gouhNwtcnLmaTG574i/mtCXf99Tt1wrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lMmvvVmZBP7KtgT7bMcF25ev6TvIOYa0IZ4OWqJ2luZUOM0evYTiCZOxJTZBa5lzz Y1w0CEG7Yy2MssiqbQ64jAM5vi9n9eb1JOWE3DF6D9Zs6hWGsccs6GYMlbb99Bc8fC okEsRI5Hnu4HM3wLn+spAZ2Kd7aasYJb2Iv0kzWI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wolfram Sang , Shawn Guo , Wolfram Sang , Sasha Levin Subject: [PATCH 4.19 130/220] i2c: zx2967: use core to detect no zero length quirk Date: Fri, 22 Nov 2019 11:28:15 +0100 Message-Id: <20191122100922.174976206@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122100912.732983531@linuxfoundation.org> References: <20191122100912.732983531@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: Wolfram Sang [ Upstream commit e2115ace4196bcd2126446fb874bcfc90cba79be ] And don't reimplement in the driver. Signed-off-by: Wolfram Sang Acked-by: Shawn Guo Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-zx2967.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-zx2967.c b/drivers/i2c/busses/i2c-zx2967.c index 48281c1b30c6d..b8f9e020d80e6 100644 --- a/drivers/i2c/busses/i2c-zx2967.c +++ b/drivers/i2c/busses/i2c-zx2967.c @@ -281,9 +281,6 @@ static int zx2967_i2c_xfer_msg(struct zx2967_i2c *i2c, int ret; int i; - if (msg->len == 0) - return -EINVAL; - zx2967_i2c_flush_fifos(i2c); i2c->cur_trans = msg->buf; @@ -498,6 +495,10 @@ static const struct i2c_algorithm zx2967_i2c_algo = { .functionality = zx2967_i2c_func, }; +static const struct i2c_adapter_quirks zx2967_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + static const struct of_device_id zx2967_i2c_of_match[] = { { .compatible = "zte,zx296718-i2c", }, { }, @@ -568,6 +569,7 @@ static int zx2967_i2c_probe(struct platform_device *pdev) strlcpy(i2c->adap.name, "zx2967 i2c adapter", sizeof(i2c->adap.name)); i2c->adap.algo = &zx2967_i2c_algo; + i2c->adap.quirks = &zx2967_i2c_quirks; i2c->adap.nr = pdev->id; i2c->adap.dev.parent = &pdev->dev; i2c->adap.dev.of_node = pdev->dev.of_node; -- 2.20.1