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Thu, 21 Jan 2021 03:20:35 +0000 From: peng.fan@nxp.com To: ulf.hansson@linaro.org, robh+dt@kernel.org, shawnguo@kernel.org, adrian.hunter@intel.com Cc: s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: [PATCH V2 4/4] mmc: sdhci-esdhc-imx: validate pinctrl before use it Date: Thu, 21 Jan 2021 11:09:53 +0800 Message-Id: <1611198593-16287-5-git-send-email-peng.fan@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1611198593-16287-1-git-send-email-peng.fan@nxp.com> References: <1611198593-16287-1-git-send-email-peng.fan@nxp.com> Content-Type: text/plain X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SGXP274CA0005.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::17) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SGXP274CA0005.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3784.12 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?l4b3DZ41rF9ykMKyt/sTdY7i55gd9n8UjkEb/AMb8WSTz8jz0inV1c0kxNao?= =?us-ascii?Q?oioMFVfxjHiLdkDGzs6n+fwmSIv9wfjOKur7wmcla+asg4ypb+KdVj8GP7QW?= =?us-ascii?Q?vby9YNC9KC1Iw7jhNP9kGGzgks80GpNv1wHXmbS+9o53sGBuiERpokZmKieL?= =?us-ascii?Q?4wTquLtiFSRcgsi08u+ftv3tPfzsf60K8X1B0WReKOfiZ7+a25KYtU0fjfsR?= =?us-ascii?Q?otolv9Ee6tXDdPokbGEKBrumbax9awvWGhxIc4nS400iPC4y20Zmy4TlElnk?= =?us-ascii?Q?cdIYK8XQJ6SeUjkqMjc5sQ+zZNtgtegAhPze952BX9yotdI5e8R7rmHyRr9y?= =?us-ascii?Q?LL5ixDuYWddt76ORP/hszZKMkyoGz3WIAvZgl3tbF9YZMs4ZNekfrzN+QKSr?= =?us-ascii?Q?UKwzOzr0lnUCZSkGiKcVnmSKZ3Mf/Ti3fCP2Z7VFMKRv8+yD9altTi6f/qHB?= =?us-ascii?Q?+G1yuPGcXX+jU1cFcnwY1N+1Q8XJOzI4DU3nBorIBuAQEwwba4yYCzGxSq1a?= =?us-ascii?Q?ee4BJNx9xZOBAieaOAjUPFc7Ms9USabsUaICCaN9b2CrmRReGXdtiykJoaZW?= =?us-ascii?Q?7TNoTalZIbBmj6Y+QS36DWIrzsB47bOJ0pXdi5607r5koSaQvr5zzfWGfyUW?= =?us-ascii?Q?A08ioA7jntv8bLCQxEmk+Ut65SggAhr2M4XBN+Zfr4GkUm5b+SSmmaU+9xH2?= =?us-ascii?Q?pf3d2T9QJrRL84l4wOwa6Nd/cXUPK1F47a32WW2ghVcuaeDeKOYIx9V4odxJ?= =?us-ascii?Q?YKqP2XPWt9fVNqMw3NzkLnbymIRtLpnW88B+XpE3Rz+6UrF7YqFy8Y5hRFVf?= =?us-ascii?Q?Xdliv8LU1H0LhyeuZVyRTx40nl5Ef/9jibBd7VvtGcAsF6fmZWfFSuAuFax1?= =?us-ascii?Q?IRw6HQys6+5D6HTkjlQ51mSaC9KQGd4mTbNVPBRk3IYImfHAQpWNnynjxzkf?= =?us-ascii?Q?waQW28hhLQISkD+TqpcCDpl1clKZSwiPKdYOa2L072aP0ch5ewF7+pqilIS4?= =?us-ascii?Q?yF6k?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: b4d6dddf-ff62-4493-c9df-08d8bdbb83cc X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jan 2021 03:20:35.1720 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MjmlC6LuNPOBhYB5quPsCAwX/LLJQ4yda4cL0rhRQQbBMrTAc0gdwRfZkiaZ8/UMv+AlW71C52XNPcwvyGzZ+A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB6858 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peng Fan When imx_data->pinctrl is not a valid pointer, pinctrl_lookup_state will trigger kernel panic. When we boot Dual OS on Jailhouse hypervisor, we let the 1st Linux to configure pinmux ready for the 2nd OS, so the 2nd OS not have pinctrl settings. Similar to this commit b62eee9f804e ("mmc: sdhci-esdhc-imx: no fail when no pinctrl available"). Reviewed-by: Bough Chen Reviewed-by: Alice Guo Signed-off-by: Peng Fan --- drivers/mmc/host/sdhci-esdhc-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 16ed19f47939..11d3a2244b36 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -1488,7 +1488,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, mmc_of_parse_voltage(np, &host->ocr_mask); - if (esdhc_is_usdhc(imx_data)) { + if (esdhc_is_usdhc(imx_data) && !IS_ERR(imx_data->pinctrl)) { imx_data->pins_100mhz = pinctrl_lookup_state(imx_data->pinctrl, ESDHC_PINCTRL_STATE_100MHZ); imx_data->pins_200mhz = pinctrl_lookup_state(imx_data->pinctrl, -- 2.28.0 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=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 5B033C433E6 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Peng Fan When imx_data->pinctrl is not a valid pointer, pinctrl_lookup_state will trigger kernel panic. When we boot Dual OS on Jailhouse hypervisor, we let the 1st Linux to configure pinmux ready for the 2nd OS, so the 2nd OS not have pinctrl settings. Similar to this commit b62eee9f804e ("mmc: sdhci-esdhc-imx: no fail when no pinctrl available"). Reviewed-by: Bough Chen Reviewed-by: Alice Guo Signed-off-by: Peng Fan --- drivers/mmc/host/sdhci-esdhc-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 16ed19f47939..11d3a2244b36 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -1488,7 +1488,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, mmc_of_parse_voltage(np, &host->ocr_mask); - if (esdhc_is_usdhc(imx_data)) { + if (esdhc_is_usdhc(imx_data) && !IS_ERR(imx_data->pinctrl)) { imx_data->pins_100mhz = pinctrl_lookup_state(imx_data->pinctrl, ESDHC_PINCTRL_STATE_100MHZ); imx_data->pins_200mhz = pinctrl_lookup_state(imx_data->pinctrl, -- 2.28.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel