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Mon, 19 Apr 2021 04:26:59 +0000 From: "Alice Guo (OSS)" To: gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 Content-Type: text/plain; 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This patch makes the SoC driver ready. This patch makes the SoC driver ready later than before, and causes device depends on soc_device_match() for initialization are affected, resulting in kernel boot error. CAAM driver is one of these affected drivers. It uses soc_device_match() to find the first matching entry of caam_imx_soc_table, if none of them match, the next instruction will be executed without any processing because CAAM driver is used not only on i.MX and LS, but also PPC and Vybrid. We hope that soc_device_match() could support to return -EPROBE_DEFER(or some other error code, e.g. -ENODEV, but not NULL) in case of “no SoC device registered” to SoC bus. We tried it and updated all the code that is using soc_device_match() throughout the tree. Alice Guo (3): drivers: soc: add support for soc_device_match returning -EPROBE_DEFER caam: add defer probe when the caam driver cannot identify SoC driver: update all the code that use soc_device_match drivers/base/soc.c | 5 +++++ drivers/bus/ti-sysc.c | 2 +- drivers/clk/renesas/r8a7795-cpg-mssr.c | 4 +++- drivers/clk/renesas/rcar-gen2-cpg.c | 2 +- drivers/clk/renesas/rcar-gen3-cpg.c | 2 +- drivers/crypto/caam/ctrl.c | 3 +++ drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c | 7 ++++++- drivers/dma/ti/k3-psil.c | 3 +++ drivers/dma/ti/k3-udma.c | 2 +- drivers/gpu/drm/bridge/nwl-dsi.c | 2 +- drivers/gpu/drm/meson/meson_drv.c | 4 +++- drivers/gpu/drm/omapdrm/dss/dispc.c | 2 +- drivers/gpu/drm/omapdrm/dss/dpi.c | 4 +++- drivers/gpu/drm/omapdrm/dss/dsi.c | 3 +++ drivers/gpu/drm/omapdrm/dss/dss.c | 3 +++ drivers/gpu/drm/omapdrm/dss/hdmi4_core.c | 3 +++ drivers/gpu/drm/omapdrm/dss/venc.c | 4 +++- drivers/gpu/drm/omapdrm/omap_drv.c | 3 +++ drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 +++- drivers/gpu/drm/rcar-du/rcar_lvds.c | 2 +- drivers/gpu/drm/tidss/tidss_dispc.c | 4 +++- drivers/iommu/ipmmu-vmsa.c | 7 +++++-- drivers/media/platform/rcar-vin/rcar-core.c | 2 +- drivers/media/platform/rcar-vin/rcar-csi2.c | 2 +- drivers/media/platform/vsp1/vsp1_uif.c | 4 +++- drivers/mmc/host/renesas_sdhi_core.c | 2 +- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 2 +- drivers/mmc/host/sdhci-of-esdhc.c | 21 ++++++++++++++----- drivers/mmc/host/sdhci-omap.c | 2 +- drivers/mmc/host/sdhci_am654.c | 2 +- drivers/net/ethernet/renesas/ravb_main.c | 4 +++- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- drivers/net/ethernet/ti/cpsw.c | 2 +- drivers/net/ethernet/ti/cpsw_new.c | 2 +- drivers/phy/ti/phy-omap-usb2.c | 4 +++- drivers/pinctrl/renesas/core.c | 2 +- drivers/pinctrl/renesas/pfc-r8a7790.c | 5 ++++- drivers/pinctrl/renesas/pfc-r8a7794.c | 5 ++++- drivers/soc/fsl/dpio/dpio-driver.c | 13 ++++++++---- drivers/soc/renesas/r8a774c0-sysc.c | 5 ++++- drivers/soc/renesas/r8a7795-sysc.c | 2 +- drivers/soc/renesas/r8a77990-sysc.c | 5 ++++- drivers/soc/ti/k3-ringacc.c | 2 +- drivers/staging/mt7621-pci/pci-mt7621.c | 2 +- drivers/thermal/rcar_gen3_thermal.c | 4 +++- drivers/thermal/ti-soc-thermal/ti-bandgap.c | 10 +++++++-- drivers/usb/gadget/udc/renesas_usb3.c | 2 +- drivers/usb/host/ehci-platform.c | 4 +++- drivers/usb/host/xhci-rcar.c | 2 +- drivers/watchdog/renesas_wdt.c | 2 +- 50 files changed, 139 insertions(+), 52 deletions(-) -- 2.17.1 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=-11.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by 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stern@rowland.harvard.edu, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: 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linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: AM0PR02CA0207.eurprd02.prod.outlook.com (2603:10a6:20b:28f::14) To AM6PR04MB6053.eurprd04.prod.outlook.com (2603:10a6:20b:b9::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from nxf55104-OptiPlex-7060.ap.freescale.net (119.31.174.71) by AM0PR02CA0207.eurprd02.prod.outlook.com (2603:10a6:20b:28f::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.19 via Frontend Transport; Mon, 19 Apr 2021 04:26:40 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 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dkim=none (message not signed) header.d=none;linuxfoundation.org; dmarc=none action=none header.from=oss.nxp.com; Received: from AM6PR04MB6053.eurprd04.prod.outlook.com (2603:10a6:20b:b9::10) by AS8PR04MB7912.eurprd04.prod.outlook.com (2603:10a6:20b:2ae::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.16; Mon, 19 Apr 2021 04:27:06 +0000 Received: from AM6PR04MB6053.eurprd04.prod.outlook.com ([fe80::b034:690:56aa:7b18]) by AM6PR04MB6053.eurprd04.prod.outlook.com ([fe80::b034:690:56aa:7b18%4]) with mapi id 15.20.4042.024; Mon, 19 Apr 2021 04:26:59 +0000 From: "Alice Guo (OSS)" To: gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org, linux@roeck-us.net Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: AM0PR02CA0207.eurprd02.prod.outlook.com (2603:10a6:20b:28f::14) To AM6PR04MB6053.eurprd04.prod.outlook.com (2603:10a6:20b:b9::10) MIME-Version: 1.0 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linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Alice Guo In patch "soc: imx8m: change to use platform driver", change soc-imx8m.c to use module platform driver and use NVMEM APIs to ocotp register, the reason is that directly reading ocotp egister causes kexec kernel hang because kernel will disable unused clks after kernel boots up. This patch makes the SoC driver ready. This patch makes the SoC driver ready later than before, and causes device depends on soc_device_match() for initialization are affected, resulting in kernel boot error. CAAM driver is one of these affected drivers. It uses soc_device_match() to find the first matching entry of caam_imx_soc_table, if none of them match, the next instruction will be executed without any processing because CAAM driver is used not only on i.MX and LS, but also PPC and Vybrid. We hope that soc_device_match() could support to return -EPROBE_DEFER(or some other error code, e.g. -ENODEV, but not NULL) in case of “no SoC device registered” to SoC bus. We tried it and updated all the code that is using soc_device_match() throughout the tree. Alice Guo (3): drivers: soc: add support for soc_device_match returning -EPROBE_DEFER caam: add defer probe when the caam driver cannot identify SoC driver: update all the code that use soc_device_match drivers/base/soc.c | 5 +++++ drivers/bus/ti-sysc.c | 2 +- drivers/clk/renesas/r8a7795-cpg-mssr.c | 4 +++- drivers/clk/renesas/rcar-gen2-cpg.c | 2 +- drivers/clk/renesas/rcar-gen3-cpg.c | 2 +- drivers/crypto/caam/ctrl.c | 3 +++ drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c | 7 ++++++- drivers/dma/ti/k3-psil.c | 3 +++ drivers/dma/ti/k3-udma.c | 2 +- drivers/gpu/drm/bridge/nwl-dsi.c | 2 +- drivers/gpu/drm/meson/meson_drv.c | 4 +++- drivers/gpu/drm/omapdrm/dss/dispc.c | 2 +- drivers/gpu/drm/omapdrm/dss/dpi.c | 4 +++- drivers/gpu/drm/omapdrm/dss/dsi.c | 3 +++ drivers/gpu/drm/omapdrm/dss/dss.c | 3 +++ drivers/gpu/drm/omapdrm/dss/hdmi4_core.c | 3 +++ drivers/gpu/drm/omapdrm/dss/venc.c | 4 +++- drivers/gpu/drm/omapdrm/omap_drv.c | 3 +++ drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 +++- drivers/gpu/drm/rcar-du/rcar_lvds.c | 2 +- drivers/gpu/drm/tidss/tidss_dispc.c | 4 +++- drivers/iommu/ipmmu-vmsa.c | 7 +++++-- drivers/media/platform/rcar-vin/rcar-core.c | 2 +- drivers/media/platform/rcar-vin/rcar-csi2.c | 2 +- drivers/media/platform/vsp1/vsp1_uif.c | 4 +++- drivers/mmc/host/renesas_sdhi_core.c | 2 +- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 2 +- drivers/mmc/host/sdhci-of-esdhc.c | 21 ++++++++++++++----- drivers/mmc/host/sdhci-omap.c | 2 +- drivers/mmc/host/sdhci_am654.c | 2 +- drivers/net/ethernet/renesas/ravb_main.c | 4 +++- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- drivers/net/ethernet/ti/cpsw.c | 2 +- drivers/net/ethernet/ti/cpsw_new.c | 2 +- drivers/phy/ti/phy-omap-usb2.c | 4 +++- drivers/pinctrl/renesas/core.c | 2 +- drivers/pinctrl/renesas/pfc-r8a7790.c | 5 ++++- drivers/pinctrl/renesas/pfc-r8a7794.c | 5 ++++- drivers/soc/fsl/dpio/dpio-driver.c | 13 ++++++++---- drivers/soc/renesas/r8a774c0-sysc.c | 5 ++++- drivers/soc/renesas/r8a7795-sysc.c | 2 +- drivers/soc/renesas/r8a77990-sysc.c | 5 ++++- drivers/soc/ti/k3-ringacc.c | 2 +- drivers/staging/mt7621-pci/pci-mt7621.c | 2 +- drivers/thermal/rcar_gen3_thermal.c | 4 +++- drivers/thermal/ti-soc-thermal/ti-bandgap.c | 10 +++++++-- drivers/usb/gadget/udc/renesas_usb3.c | 2 +- drivers/usb/host/ehci-platform.c | 4 +++- drivers/usb/host/xhci-rcar.c | 2 +- drivers/watchdog/renesas_wdt.c | 2 +- 50 files changed, 139 insertions(+), 52 deletions(-) -- 2.17.1 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=-11.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org 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airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org, linux@roeck-us.net Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: AM0PR02CA0207.eurprd02.prod.outlook.com (2603:10a6:20b:28f::14) To AM6PR04MB6053.eurprd04.prod.outlook.com (2603:10a6:20b:b9::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from nxf55104-OptiPlex-7060.ap.freescale.net 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airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org, linux@roeck-us.net Subject: [RFC v1 PATCH 0/3] support soc_device_match to return -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:19 +0800 Message-Id: <20210419042722.27554-1-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: AM0PR02CA0207.eurprd02.prod.outlook.com (2603:10a6:20b:28f::14) To AM6PR04MB6053.eurprd04.prod.outlook.com (2603:10a6:20b:b9::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from nxf55104-OptiPlex-7060.ap.freescale.net 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