From patchwork Mon Dec 28 12:51:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 354826 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED, 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 31141C43332 for ; Mon, 28 Dec 2020 14:38:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12A9420728 for ; Mon, 28 Dec 2020 14:38:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392308AbgL1Oip (ORCPT ); Mon, 28 Dec 2020 09:38:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:39652 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390383AbgL1Obn (ORCPT ); Mon, 28 Dec 2020 09:31:43 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id B02702063A; Mon, 28 Dec 2020 14:31:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609165888; bh=mHnbGPAl7oQQAM2WMBXqXFUVy/YH317CVojGgq9XwiU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tHR+4R4A6h8btQcrogw2eg2EIy/GJfymPidMIlQWtrMbtXIean8Nkr9+KXvkxy3y7 p/olKh1wYbeqVcP5OspQrwkEQfKeW3LywxNbUVn2DIB+8AYbYYvgAhVPmZTusOcaWl qe1jmSKrtfuTFroEYFoxp3CMxjFMR+36hkKhbaUo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, William Breathitt Gray , Alexandre Belloni , Kamel Bouhara , Stable@vger.kernel.org, Jonathan Cameron Subject: [PATCH 5.10 691/717] counter: microchip-tcb-capture: Fix CMR value check Date: Mon, 28 Dec 2020 13:51:29 +0100 Message-Id: <20201228125054.081521313@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228125020.963311703@linuxfoundation.org> References: <20201228125020.963311703@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: William Breathitt Gray commit 3418bd7cfce0bd8ef1ccedc4655f9f86f6c3b0ca upstream. The ATMEL_TC_ETRGEDG_* defines are not masks but rather possible values for CMR. This patch fixes the action_get() callback to properly check for these values rather than mask them. Fixes: 106b104137fd ("counter: Add microchip TCB capture counter") Signed-off-by: William Breathitt Gray Acked-by: Alexandre Belloni Acked-by: Kamel Bouhara Cc: Link: https://lore.kernel.org/r/20201114232805.253108-1-vilhelm.gray@gmail.com Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/counter/microchip-tcb-capture.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) --- a/drivers/counter/microchip-tcb-capture.c +++ b/drivers/counter/microchip-tcb-capture.c @@ -183,16 +183,20 @@ static int mchp_tc_count_action_get(stru regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr); - *action = MCHP_TC_SYNAPSE_ACTION_NONE; - - if (cmr & ATMEL_TC_ETRGEDG_NONE) + switch (cmr & ATMEL_TC_ETRGEDG) { + default: *action = MCHP_TC_SYNAPSE_ACTION_NONE; - else if (cmr & ATMEL_TC_ETRGEDG_RISING) + break; + case ATMEL_TC_ETRGEDG_RISING: *action = MCHP_TC_SYNAPSE_ACTION_RISING_EDGE; - else if (cmr & ATMEL_TC_ETRGEDG_FALLING) + break; + case ATMEL_TC_ETRGEDG_FALLING: *action = MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE; - else if (cmr & ATMEL_TC_ETRGEDG_BOTH) + break; + case ATMEL_TC_ETRGEDG_BOTH: *action = MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE; + break; + } return 0; }