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Mon, 02 Mar 2020 13:43:47 -0800 Received: from xsj-pvapsmtp01 (xsj-mail.xilinx.com [149.199.38.66]) by xsj-smtp-dlp1.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id 022Lhi69006055; Mon, 2 Mar 2020 13:43:45 -0800 Received: from [172.19.2.91] (helo=xsjjollys50.xilinx.com) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1j8sqm-00032V-Mq; Mon, 02 Mar 2020 13:43:44 -0800 From: Jolly Shah To: olof@lixom.net, mturquette@baylibre.com, sboyd@kernel.org, michal.simek@xilinx.com, arm@kernel.org, linux-clk@vger.kernel.org Cc: rajanv@xilinx.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rajan Vaja , Jolly Shah Subject: [PATCH 1/4] clk: zynqmp: Limit bestdiv with maxdiv Date: Mon, 2 Mar 2020 13:43:31 -0800 Message-Id: <1583185414-20106-2-git-send-email-jolly.shah@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1583185414-20106-1-git-send-email-jolly.shah@xilinx.com> References: <1583185414-20106-1-git-send-email-jolly.shah@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83;IPV:;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(4636009)(396003)(136003)(376002)(346002)(39860400002)(199004)(189003)(4744005)(26005)(5660300002)(426003)(2616005)(356004)(6666004)(81166006)(8676002)(44832011)(81156014)(70206006)(316002)(54906003)(186003)(70586007)(336012)(478600001)(7696005)(4326008)(36756003)(8936002)(2906002)(107886003)(9786002);DIR:OUT;SFP:1101;SCL:1;SRVR:SN6PR02MB5663;H:xsj-pvapsmtpgw01;FPR:;SPF:Pass;LANG:en;PTR:unknown-60-83.xilinx.com;A:1;MX:1; MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8ce618c3-c5d0-4a1a-dd59-08d7bef2cd24 X-MS-TrafficTypeDiagnostic: SN6PR02MB5663: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:923; X-Forefront-PRVS: 033054F29A X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 2ctZSpmuxmPSZzeNbDOEyXIdi4zVeEMVFGb+yTVC4yDUUor1/bbT8fS027bQkxbbWslFoM4Y2zeZ9ctGvbmw5tbIIfUQ3uWY27bbgyH+Nh1t2O/TnHNzrK0cssZTqv3y208jmee6d5M31ujSAyK0q5sCFjs7+Hi69Odlxg3h7AK8dK6JfLiql/ilfBY3ow6+ykLiPqvnNFE0AUB4VbJLuQZnGmqrDfRIqwtSse8WQdaYM/OIZMl+gMqRR/uk0fR5xSVeni/HXSQ+Y+Ft2a5jAYA8mt3C7UUne4RoZ0LZ6XM6mfGxzD1E1uG5YdfkW7a5048FZQDnbUMBiNSv5r2oDdm/NO9PZbbkI+nqmCivLzW0+AEaWiXWR80IBj1jesMOnNKPkTU3ZQtmTrM7an45+g3blDCHdmKVgHS98H7yAbtqQwRSABUvXXv5dtxNGJyb X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Mar 2020 21:43:52.8031 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8ce618c3-c5d0-4a1a-dd59-08d7bef2cd24 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR02MB5663 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org From: Rajan Vaja Clock divider value should not be greater than maximum divider value. So use minimum of best divider or maximum divider value. Signed-off-by: Rajan Vaja Signed-off-by: Jolly Shah --- drivers/clk/zynqmp/divider.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c index 973cdf0..7d2cb61 100644 --- a/drivers/clk/zynqmp/divider.c +++ b/drivers/clk/zynqmp/divider.c @@ -198,6 +198,8 @@ static long zynqmp_clk_divider_round_rate(struct clk_hw *hw, if ((clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) && divider->is_frac) bestdiv = rate % *prate ? 1 : bestdiv; + + bestdiv = min_t(u32, bestdiv, divider->max_div); *prate = rate * bestdiv; return rate;