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=-14.6 required=3.0 tests=BAYES_00,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 AF5DAC43466 for ; Mon, 21 Sep 2020 14:41:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 736A6238A1 for ; Mon, 21 Sep 2020 14:41:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600699278; bh=m6VntauJMDSn9rRbPBvIGiZJuUNIY4Q+haPvrNHbwj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gJUYHtmtD2YmDbcOM6FCgvGCphHCGNmCjIl10CE3uSKDfws4N84UDXyBW8N2Fx6ex Ny3ZTL1/j409BfjiCIZ9L8HDp+knlssY3Z6rakHDASUwbamZ++h7JVURS3kwgBedJz TVnuPui5NaQpu8sX+XkuPX/5e9RoleUzQnJZ7G2g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727174AbgIUOlR (ORCPT ); Mon, 21 Sep 2020 10:41:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:50074 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727981AbgIUOlE (ORCPT ); Mon, 21 Sep 2020 10:41:04 -0400 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 27A0A23600; Mon, 21 Sep 2020 14:41:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600699264; bh=m6VntauJMDSn9rRbPBvIGiZJuUNIY4Q+haPvrNHbwj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U3Tg7a/tVPClKLVRp/1JN5xZjugTzdSJK/0LRGrcCxfmnQILLIGW+Fob3TJKwd3LZ mv1MIMLc+GYRnm8cWd4Id1LNGuldQ7prMBX3dQw8lEiUYB03WALifO3ItDLGUoiu+8 0Z+dwLnj52xWyjFBKJj3YCihBbHjSXrz36Aw+SDo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Eddie James , Tao Ren , Wolfram Sang , Sasha Levin , linux-i2c@vger.kernel.org, openbmc@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org Subject: [PATCH AUTOSEL 5.4 07/15] i2c: aspeed: Mask IRQ status to relevant bits Date: Mon, 21 Sep 2020 10:40:46 -0400 Message-Id: <20200921144054.2135602-7-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200921144054.2135602-1-sashal@kernel.org> References: <20200921144054.2135602-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eddie James [ Upstream commit 1a1d6db23ddacde0b15ea589e9103373e05af8de ] Mask the IRQ status to only the bits that the driver checks. This prevents excessive driver warnings when operating in slave mode when additional bits are set that the driver doesn't handle. Signed-off-by: Eddie James Reviewed-by: Tao Ren Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-aspeed.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index dad6e432de89f..bdcc3c9d0abe5 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -69,6 +69,7 @@ * These share bit definitions, so use the same values for the enable & * status bits. */ +#define ASPEED_I2CD_INTR_RECV_MASK 0xf000ffff #define ASPEED_I2CD_INTR_SDA_DL_TIMEOUT BIT(14) #define ASPEED_I2CD_INTR_BUS_RECOVER_DONE BIT(13) #define ASPEED_I2CD_INTR_SLAVE_MATCH BIT(7) @@ -604,6 +605,7 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) writel(irq_received & ~ASPEED_I2CD_INTR_RX_DONE, bus->base + ASPEED_I2C_INTR_STS_REG); readl(bus->base + ASPEED_I2C_INTR_STS_REG); + irq_received &= ASPEED_I2CD_INTR_RECV_MASK; irq_remaining = irq_received; #if IS_ENABLED(CONFIG_I2C_SLAVE) -- 2.25.1