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Mon, 19 Apr 2021 04:28:06 +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 1/3] drivers: soc: add support for soc_device_match returning -EPROBE_DEFER Date: Mon, 19 Apr 2021 12:27:20 +0800 Message-Id: <20210419042722.27554-2-alice.guo@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210419042722.27554-1-alice.guo@oss.nxp.com> References: <20210419042722.27554-1-alice.guo@oss.nxp.com> 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; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7904f4b3-4df0-4958-4548-08d902eb873e X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB6053.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Apr 2021 04:28:06.4817 (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: RKXHsn0zDIGxtWfE80zFu615kRdQOFWRb/mRUDPRDxSlzjTfBVvrqCPq4FC2odaf3TelCkg96r2AsvbDZ5jWUg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB7912 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Alice Guo In i.MX8M boards, the registration of SoC device is later than caam driver which needs it. Caam driver needs soc_device_match to provide -EPROBE_DEFER when no SoC device is registered and no early_soc_dev_attr. Signed-off-by: Alice Guo --- drivers/base/soc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/base/soc.c b/drivers/base/soc.c index 0af5363a582c..12a22f9cf5c8 100644 --- a/drivers/base/soc.c +++ b/drivers/base/soc.c @@ -110,6 +110,7 @@ static void soc_release(struct device *dev) } static struct soc_device_attribute *early_soc_dev_attr; +static bool soc_dev_attr_init_done = false; struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr) { @@ -157,6 +158,7 @@ struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr return ERR_PTR(ret); } + soc_dev_attr_init_done = true; return soc_dev; out3: @@ -246,6 +248,9 @@ const struct soc_device_attribute *soc_device_match( if (!matches) return NULL; + if (!soc_dev_attr_init_done && !early_soc_dev_attr) + return ERR_PTR(-EPROBE_DEFER); + while (!ret) { if (!(matches->machine || matches->family || matches->revision || matches->soc_id))