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=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 9B922C43331 for ; Wed, 13 Nov 2019 02:22:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74D9721D7F for ; Wed, 13 Nov 2019 02:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573611742; bh=jaHaRyda7MXr3YsDxYA2f/RYFTQs0cy+RIHpbN7vCdE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Y5d9S4GNB8RrAtTXzDdbRm0zG3nLYcDFCKU/YX59tIf1NBFRtulTvCKnA7MIwWUyJ sd5Xb0A9EYfBlvR//Uo1XFSo0qR/hR595eDTETzmglBiQhNEVoLpUtcn4hBh5ISN73 sK9nn6vz4jhbei3XnWZ9oYg41trYesXn2pIlHjzI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728618AbfKMCWQ (ORCPT ); Tue, 12 Nov 2019 21:22:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:43314 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728592AbfKMBxc (ORCPT ); Tue, 12 Nov 2019 20:53:32 -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 17F66222CF; Wed, 13 Nov 2019 01:53:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610012; bh=jaHaRyda7MXr3YsDxYA2f/RYFTQs0cy+RIHpbN7vCdE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qZrqeph2rH/6fRP6PGfNwbP/5m+vd8Vr1DQYaO3V2kMdxmrvPBqapUN4B2rd8CKN3 2r3mVRUBVCd5wzfNt2bnbPhjtMPEDcvpvItnROoX7H+4R0fXAM5m94ZzCYUgOTJNBH U8E1OTlnj2r1g27+6aRKzv7vD+yKimwnkyGLIz2Y= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wolfram Sang , Grygorii Strashko , Tony Lindgren , Wolfram Sang , Sasha Levin , linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 116/209] i2c: omap: use core to detect 'no zero length' quirk Date: Tue, 12 Nov 2019 20:48:52 -0500 Message-Id: <20191113015025.9685-116-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 f37b2bb6ac3e6ebf855d9d4f05cc6932a8e5b463 ] And don't reimplement in the driver. Signed-off-by: Wolfram Sang Reviewed-by: Grygorii Strashko Acked-by: Tony Lindgren Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-omap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 2ac86096ddd95..cd9c65f3d404f 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -661,9 +661,6 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adap, dev_dbg(omap->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n", msg->addr, msg->len, msg->flags, stop); - if (msg->len == 0) - return -EINVAL; - omap->receiver = !!(msg->flags & I2C_M_RD); omap_i2c_resize_fifo(omap, msg->len, omap->receiver); @@ -1179,6 +1176,10 @@ static const struct i2c_algorithm omap_i2c_algo = { .functionality = omap_i2c_func, }; +static const struct i2c_adapter_quirks omap_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + #ifdef CONFIG_OF static struct omap_i2c_bus_platform_data omap2420_pdata = { .rev = OMAP_I2C_IP_VERSION_1, @@ -1453,6 +1454,7 @@ omap_i2c_probe(struct platform_device *pdev) adap->class = I2C_CLASS_DEPRECATED; strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name)); adap->algo = &omap_i2c_algo; + adap->quirks = &omap_i2c_quirks; adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; adap->bus_recovery_info = &omap_i2c_bus_recovery_info; -- 2.20.1