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=-9.5 required=3.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,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 0E79EC47247 for ; Sat, 9 May 2020 01:34:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E737924958 for ; Sat, 9 May 2020 01:34:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728415AbgEIBes (ORCPT ); Fri, 8 May 2020 21:34:48 -0400 Received: from mail-mw2nam12olkn2060.outbound.protection.outlook.com ([40.92.23.60]:10433 "EHLO NAM12-MW2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727828AbgEIBer (ORCPT ); Fri, 8 May 2020 21:34:47 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=fxAt6Yw3a29xPbXCUIsYdXRk6+e7v+cGmZ/HjG1MQRm90Qw0f4jDLLxPsCzc2btto6evkEMWWlycdSelN5yMXhsSRiue/rvTQ4+17C0lyencFn2z4EOfTj0XhEptbe/h7alIN/mGo07vyHr7bVkcniicOTGIu+dTi3kfNLBOcGetWZRiJjZ4RVrLQsvx9CZ9IDIuPqaH8R3jXqbkVzKCu6MXNdc7ZlHld+hRRZFEvqw3NSPfZZgbJn9maqHSQwhAEibtwqqNkg9aA2C38j45HsDX/g+w4dLY5zCowBLOizKhmA6yJcLCEzvnfkx2PyAVnhOICva56pANf3+ge0iP/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zg0OsvzlU1eLMvS0vAoFzf9f4nkJrus+FNqiK+LOu2I=; b=Xnc79Th8Cj+D6eh6Iv2z+22qULBstWjonQ6ShBeGpxY1gbm4LLU8XebPkvQUVg/r7/EhGY5ldLWZv1dvMmGwzUUqe1sbr3HxyzPWFTxFaw/eV8uWF77LM7/Sf2wVYoJqzEbsfDaL81TN/y4F1HYVSdYEByjsQYu63mVzXTBL765xj437Hb3giebRq0Gs/OhMOM50DabHS5ct3VIaae6QCxugStItk0uK+aXJDC2hgRgUqp8EEbtOs+mW3lWL+6TfGx8zdOLbGtEed9iBn5t3mihALBLwDfUyU0BPkLn1Nmj9owKZg3/pYmj2ua1Q14hXyKqD2PC9bMJ7rPuYjLhDPw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=live.ca; dmarc=pass action=none header.from=live.ca; dkim=pass header.d=live.ca; arc=none Received: from BN8NAM12FT019.eop-nam12.prod.protection.outlook.com (2a01:111:e400:fc66::51) by BN8NAM12HT197.eop-nam12.prod.protection.outlook.com (2a01:111:e400:fc66::385) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.11; Sat, 9 May 2020 01:34:44 +0000 Received: from BN6PR04MB0660.namprd04.prod.outlook.com (2a01:111:e400:fc66::49) by BN8NAM12FT019.mail.protection.outlook.com (2a01:111:e400:fc66::416) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.11 via Frontend Transport; Sat, 9 May 2020 01:34:44 +0000 X-IncomingTopHeaderMarker: OriginalChecksum:D3D0BD23F8AD38415164C897CD7B9247A5EB6F568E4DEB138FB449DB98DEBD0E;UpperCasedChecksum:059D37F2A3F4A1A387B49EDA450D39FF8E59769650961E57C50C8618236AF017;SizeAsReceived:7738;Count:48 Received: from BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::ad10:4127:4bc8:76fc]) by BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::ad10:4127:4bc8:76fc%6]) with mapi id 15.20.2979.033; Sat, 9 May 2020 01:34:44 +0000 From: Jonathan Bakker To: kgene@kernel.org, krzk@kernel.org, gregkh@linuxfoundation.org, jslaby@suse.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jonathan Bakker Subject: [PATCH] tty: serial: samsung: Correct clock selection logic Date: Fri, 8 May 2020 18:34:33 -0700 Message-ID: X-Mailer: git-send-email 2.20.1 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-ClientProxiedBy: CO2PR04CA0007.namprd04.prod.outlook.com (2603:10b6:102:1::17) To BN6PR04MB0660.namprd04.prod.outlook.com (2603:10b6:404:d9::21) X-Microsoft-Original-Message-ID: <20200509013433.23152-1-xc-racer2@live.ca> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from jon-hp-6570b.telus (2001:569:fb68:9c00:8067:f823:1e15:7520) by CO2PR04CA0007.namprd04.prod.outlook.com (2603:10b6:102:1::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2979.28 via Frontend Transport; Sat, 9 May 2020 01:34:43 +0000 X-Mailer: git-send-email 2.20.1 X-Microsoft-Original-Message-ID: <20200509013433.23152-1-xc-racer2@live.ca> X-TMN: [NN/Ci17XNAwKoNPXso5hxFZpP2g50cHt4TsXayU35974VRbh31XZ/ItSSL84vS+8] X-MS-PublicTrafficType: Email X-IncomingHeaderCount: 48 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-Correlation-Id: 78b3340d-b96b-452d-59f6-08d7f3b926bc X-MS-TrafficTypeDiagnostic: BN8NAM12HT197: X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: S+Pmf+7X1j1nLgegg525J2+23iYcy2bhoHxH+EkC2ENEuS36A+dHlaKl+L/r2a5je2rG37sXbLxkR0w215OhBM0UKKp04P/s0wk3jwcy9hGo3M1Vge4l4nd5xjDKwqKhahvyoqrNBQ5M5b9dHXA4KfXbqT1bM1UOOpfNWTNeWOCOBshLsAXZlb9EYGUaOA76nZjJuun1WKmBTTQe2tW87Q== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:0;SRV:;IPV:NLI;SFV:NSPM;H:BN6PR04MB0660.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:;DIR:OUT;SFP:1901; X-MS-Exchange-AntiSpam-MessageData: osNfQuONJHWs8koab4YCXiQIb3SnKhMK3W9431E2kJQRg+sFYCTBJJbSS+BrWYQwCVZN/+BEsywDEW5Bf/Dg8yq/4lOHipVOl0ZJ8eCrcWrH/z+zuzqateBKfPQLVNXhlFe9I6HHfFUumU3qoDh2nys89Ndyg6tH7szq/RW7yAf/LOn9UKRpv9xoLXr6AhG5E3eCcXnXno2nlNKa/mUQHw== X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 78b3340d-b96b-452d-59f6-08d7f3b926bc X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 May 2020 01:34:44.6349 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8NAM12HT197 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some variants of the samsung tty driver can pick which clock to use for their baud rate generation. In the DT conversion, a default clock was selected to be used if a specific one wasn't assigned and then a comparison of which clock rate worked better was done. Unfortunately, the comparison was implemented in such a way that only the default clock was ever actually compared. Fix this by iterating through all possible clocks, except when a specific clock has already been picked via clk_sel (which is only possible via board files). Signed-off-by: Jonathan Bakker --- drivers/tty/serial/samsung_tty.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 73f951d65b93..9d2b4be44209 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -1281,14 +1281,14 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport, struct s3c24xx_uart_info *info = ourport->info; struct clk *clk; unsigned long rate; - unsigned int cnt, baud, quot, clk_sel, best_quot = 0; + unsigned int cnt, baud, quot, best_quot = 0; char clkname[MAX_CLK_NAME_LENGTH]; int calc_deviation, deviation = (1 << 30) - 1; - clk_sel = (ourport->cfg->clk_sel) ? ourport->cfg->clk_sel : - ourport->info->def_clk_sel; for (cnt = 0; cnt < info->num_clks; cnt++) { - if (!(clk_sel & (1 << cnt))) + /* Keep selected clock if provided */ + if (ourport->cfg->clk_sel && + !(ourport->cfg->clk_sel & (1 << cnt))) continue; sprintf(clkname, "clk_uart_baud%d", cnt); -- 2.20.1 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=-9.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,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 7337AC54E49 for ; Sat, 9 May 2020 01:34:52 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 35F832070B for ; Sat, 9 May 2020 01:34:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="YUCZhciU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35F832070B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=live.ca Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=7MPGNMv6jlHV2CPdYC42SvKIBOJg6FoetDoRHIOG5vc=; b=YUCZhciU2DpjIK OIWYWbfDfA/LO/7oTKyMqcAhFM/wdjm6t/ksf1UsCO6wbE2FjcGfX2N/LR5exdlsfIWYZUD2UmCN4 R6huBB7P2EnKzgPxkf1hqOyAtwEbJATAsvEkFevgekYwUBuUfkYX4X1GP56g3rCQZv5PWc3excaj5 stjq5LbtIaMDlDFcZyUrtj8LVGnPA3/YTBhqrbwqW0q3p6JGO8dmZW0CWt4Wb6rxlAx7Qj8ikhf1+ 6WlwcR78TT/k7cBY+XFPaendkDg6Gh4vQL6oLHfROsW4dY1S0+TKtU2tPyv6qaFcKQQeFvOpwUSK3 khaG2O0vi01RRZ0vY+Zw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXEOB-0006NM-Ld; Sat, 09 May 2020 01:34:51 +0000 Received: from mail-mw2nam12olkn2031.outbound.protection.outlook.com ([40.92.23.31] helo=NAM12-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXEO8-0006MP-4k for linux-arm-kernel@lists.infradead.org; Sat, 09 May 2020 01:34:49 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=fxAt6Yw3a29xPbXCUIsYdXRk6+e7v+cGmZ/HjG1MQRm90Qw0f4jDLLxPsCzc2btto6evkEMWWlycdSelN5yMXhsSRiue/rvTQ4+17C0lyencFn2z4EOfTj0XhEptbe/h7alIN/mGo07vyHr7bVkcniicOTGIu+dTi3kfNLBOcGetWZRiJjZ4RVrLQsvx9CZ9IDIuPqaH8R3jXqbkVzKCu6MXNdc7ZlHld+hRRZFEvqw3NSPfZZgbJn9maqHSQwhAEibtwqqNkg9aA2C38j45HsDX/g+w4dLY5zCowBLOizKhmA6yJcLCEzvnfkx2PyAVnhOICva56pANf3+ge0iP/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zg0OsvzlU1eLMvS0vAoFzf9f4nkJrus+FNqiK+LOu2I=; b=Xnc79Th8Cj+D6eh6Iv2z+22qULBstWjonQ6ShBeGpxY1gbm4LLU8XebPkvQUVg/r7/EhGY5ldLWZv1dvMmGwzUUqe1sbr3HxyzPWFTxFaw/eV8uWF77LM7/Sf2wVYoJqzEbsfDaL81TN/y4F1HYVSdYEByjsQYu63mVzXTBL765xj437Hb3giebRq0Gs/OhMOM50DabHS5ct3VIaae6QCxugStItk0uK+aXJDC2hgRgUqp8EEbtOs+mW3lWL+6TfGx8zdOLbGtEed9iBn5t3mihALBLwDfUyU0BPkLn1Nmj9owKZg3/pYmj2ua1Q14hXyKqD2PC9bMJ7rPuYjLhDPw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=live.ca; dmarc=pass action=none header.from=live.ca; dkim=pass header.d=live.ca; arc=none Received: from BN8NAM12FT019.eop-nam12.prod.protection.outlook.com (2a01:111:e400:fc66::51) by BN8NAM12HT197.eop-nam12.prod.protection.outlook.com (2a01:111:e400:fc66::385) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.11; Sat, 9 May 2020 01:34:44 +0000 Received: from BN6PR04MB0660.namprd04.prod.outlook.com (2a01:111:e400:fc66::49) by BN8NAM12FT019.mail.protection.outlook.com (2a01:111:e400:fc66::416) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.11 via Frontend Transport; Sat, 9 May 2020 01:34:44 +0000 X-IncomingTopHeaderMarker: OriginalChecksum:D3D0BD23F8AD38415164C897CD7B9247A5EB6F568E4DEB138FB449DB98DEBD0E; UpperCasedChecksum:059D37F2A3F4A1A387B49EDA450D39FF8E59769650961E57C50C8618236AF017; SizeAsReceived:7738; Count:48 Received: from BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::ad10:4127:4bc8:76fc]) by BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::ad10:4127:4bc8:76fc%6]) with mapi id 15.20.2979.033; Sat, 9 May 2020 01:34:44 +0000 From: Jonathan Bakker To: kgene@kernel.org, krzk@kernel.org, gregkh@linuxfoundation.org, jslaby@suse.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] tty: serial: samsung: Correct clock selection logic Date: Fri, 8 May 2020 18:34:33 -0700 Message-ID: X-Mailer: git-send-email 2.20.1 X-ClientProxiedBy: CO2PR04CA0007.namprd04.prod.outlook.com (2603:10b6:102:1::17) To BN6PR04MB0660.namprd04.prod.outlook.com (2603:10b6:404:d9::21) X-Microsoft-Original-Message-ID: <20200509013433.23152-1-xc-racer2@live.ca> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from jon-hp-6570b.telus (2001:569:fb68:9c00:8067:f823:1e15:7520) by CO2PR04CA0007.namprd04.prod.outlook.com (2603:10b6:102:1::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2979.28 via Frontend Transport; Sat, 9 May 2020 01:34:43 +0000 X-Mailer: git-send-email 2.20.1 X-Microsoft-Original-Message-ID: <20200509013433.23152-1-xc-racer2@live.ca> X-TMN: [NN/Ci17XNAwKoNPXso5hxFZpP2g50cHt4TsXayU35974VRbh31XZ/ItSSL84vS+8] X-MS-PublicTrafficType: Email X-IncomingHeaderCount: 48 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-Correlation-Id: 78b3340d-b96b-452d-59f6-08d7f3b926bc X-MS-TrafficTypeDiagnostic: BN8NAM12HT197: X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: S+Pmf+7X1j1nLgegg525J2+23iYcy2bhoHxH+EkC2ENEuS36A+dHlaKl+L/r2a5je2rG37sXbLxkR0w215OhBM0UKKp04P/s0wk3jwcy9hGo3M1Vge4l4nd5xjDKwqKhahvyoqrNBQ5M5b9dHXA4KfXbqT1bM1UOOpfNWTNeWOCOBshLsAXZlb9EYGUaOA76nZjJuun1WKmBTTQe2tW87Q== X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:0; SRV:; IPV:NLI; SFV:NSPM; H:BN6PR04MB0660.namprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:; DIR:OUT; SFP:1901; X-MS-Exchange-AntiSpam-MessageData: osNfQuONJHWs8koab4YCXiQIb3SnKhMK3W9431E2kJQRg+sFYCTBJJbSS+BrWYQwCVZN/+BEsywDEW5Bf/Dg8yq/4lOHipVOl0ZJ8eCrcWrH/z+zuzqateBKfPQLVNXhlFe9I6HHfFUumU3qoDh2nys89Ndyg6tH7szq/RW7yAf/LOn9UKRpv9xoLXr6AhG5E3eCcXnXno2nlNKa/mUQHw== X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 78b3340d-b96b-452d-59f6-08d7f3b926bc X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 May 2020 01:34:44.6349 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8NAM12HT197 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200508_183448_185153_9C830DFB X-CRM114-Status: GOOD ( 10.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jonathan Bakker Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some variants of the samsung tty driver can pick which clock to use for their baud rate generation. In the DT conversion, a default clock was selected to be used if a specific one wasn't assigned and then a comparison of which clock rate worked better was done. Unfortunately, the comparison was implemented in such a way that only the default clock was ever actually compared. Fix this by iterating through all possible clocks, except when a specific clock has already been picked via clk_sel (which is only possible via board files). Signed-off-by: Jonathan Bakker --- drivers/tty/serial/samsung_tty.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 73f951d65b93..9d2b4be44209 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -1281,14 +1281,14 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport, struct s3c24xx_uart_info *info = ourport->info; struct clk *clk; unsigned long rate; - unsigned int cnt, baud, quot, clk_sel, best_quot = 0; + unsigned int cnt, baud, quot, best_quot = 0; char clkname[MAX_CLK_NAME_LENGTH]; int calc_deviation, deviation = (1 << 30) - 1; - clk_sel = (ourport->cfg->clk_sel) ? ourport->cfg->clk_sel : - ourport->info->def_clk_sel; for (cnt = 0; cnt < info->num_clks; cnt++) { - if (!(clk_sel & (1 << cnt))) + /* Keep selected clock if provided */ + if (ourport->cfg->clk_sel && + !(ourport->cfg->clk_sel & (1 << cnt))) continue; sprintf(clkname, "clk_uart_baud%d", cnt); -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel