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Tue, 7 Nov 2023 03:27:22 -0800 Received: from rnnvmail203.nvidia.com (10.129.68.9) by rnnvmail203.nvidia.com (10.129.68.9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 7 Nov 2023 03:27:21 -0800 Received: from amhetre.nvidia.com (10.127.8.9) by mail.nvidia.com (10.129.68.9) with Microsoft SMTP Server id 15.2.986.41 via Frontend Transport; Tue, 7 Nov 2023 03:27:19 -0800 From: Ashish Mhetre To: , , , CC: , , "Ashish Mhetre" Subject: [Patch V2 2/2] memory: tegra: Skip SID programming if SID registers aren't set Date: Tue, 7 Nov 2023 16:57:13 +0530 Message-ID: <20231107112713.21399-2-amhetre@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231107112713.21399-1-amhetre@nvidia.com> References: <20231107112713.21399-1-amhetre@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042A7:EE_|DM4PR12MB6303:EE_ X-MS-Office365-Filtering-Correlation-Id: e97d1d28-dcd2-4511-9332-08dbdf848b61 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Tue, 07 Nov 2023 03:28:04 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1781904428059474529 X-GMAIL-MSGID: 1781904428059474529 There are few MC clients where SID security and override register offsets are not specified like "sw_cluster0" in tegra234. Don't program SID override for such clients because it leads to access to invalid addresses. Signed-off-by: Ashish Mhetre --- drivers/memory/tegra/tegra186.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c index 8203f0db1350..d1f1dfb42716 100644 --- a/drivers/memory/tegra/tegra186.c +++ b/drivers/memory/tegra/tegra186.c @@ -75,6 +75,9 @@ static void tegra186_mc_client_sid_override(struct tegra_mc *mc, { u32 value, old; + if (client->regs.sid.security == 0 && client->regs.sid.override == 0) + return; + value = readl(mc->regs + client->regs.sid.security); if ((value & MC_SID_STREAMID_SECURITY_OVERRIDE) == 0) { /*