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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CH1PEPF0000A34C.mail.protection.outlook.com (10.167.244.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7292.25 via Frontend Transport; Sun, 18 Feb 2024 06:27:01 +0000 Received: from AUS-P9-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Sun, 18 Feb 2024 00:27:00 -0600 From: Mario Limonciello To: , CC: , , Linux regressions mailing list , "Mario Limonciello" Subject: [PATCH 0/2] AMD PMF Smart PC error handling cleanups Date: Fri, 16 Feb 2024 19:22:03 -0600 Message-ID: <20240217012205.113614-1-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000A34C:EE_|DM4PR12MB8449:EE_ X-MS-Office365-Filtering-Correlation-Id: f031bd74-c42e-4168-6d9c-08dc304a9db9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Feb 2024 06:27:01.1031 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f031bd74-c42e-4168-6d9c-08dc304a9db9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000A34C.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB8449 While debugging the suspend issue for amd-pmf the initial bisect result pointed at red herrings of cleanup flow problems for amd_pmf_init_smart_pc(). The actual issue wasn't in this code, but still a lot of memory is allocated and not immediately released if any of the error branches are taken. This series cleans that up so that every step is cleaned up. I believe this actually fixes driver bugs that "could" occur if a BIOS advertisd Smart PC as well as ITS auto or CNQF but didn't include a policy in the BIOS. Mario Limonciello (2): platform/x86/amd/pmf: Add debugging message for missing policy data platform/x86/amd/pmf: Fixup error handling for amd_pmf_init_smart_pc() drivers/platform/x86/amd/pmf/tee-if.c | 71 ++++++++++++++++++--------- 1 file changed, 47 insertions(+), 24 deletions(-) -- 2.34.1