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Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-pm@vger.kernel.org (open list:THERMAL), linux-arm-kernel@lists.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Cc: imx@lists.linux.dev Subject: [PATCH 1/1] thermal/drivers/imx_sc_thermal: return -EAGAIN when SCFW turn off resource Date: Wed, 12 Jul 2023 17:05:04 -0400 Message-Id: <20230712210505.1536416-1-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SJ0PR13CA0005.namprd13.prod.outlook.com (2603:10b6:a03:2c0::10) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|DB9PR04MB9627:EE_ X-MS-Office365-Filtering-Correlation-Id: 6b9578e8-6b65-4031-2d34-08db831bb6d1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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[ 1818.342337] thermal thermal_zone0: failed to read out thermal zone (-1) Signed-off-by: Frank Li --- drivers/thermal/imx_sc_thermal.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c index 8d6b4ef23746..0533d58f199f 100644 --- a/drivers/thermal/imx_sc_thermal.c +++ b/drivers/thermal/imx_sc_thermal.c @@ -58,7 +58,9 @@ static int imx_sc_thermal_get_temp(struct thermal_zone_device *tz, int *temp) hdr->size = 2; ret = imx_scu_call_rpc(thermal_ipc_handle, &msg, true); - if (ret) + if (ret == -EPERM) /* NO POWER */ + return -EAGAIN; + else if (ret) return ret; *temp = msg.data.resp.celsius * 1000 + msg.data.resp.tenths * 100;