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Sun, 2 Sep 2018 13:15:42 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611%7]) with mapi id 15.20.1143.000; Sun, 2 Sep 2018 13:15:42 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Dmitry Osipenko , Linus Walleij , Sasha Levin Subject: [PATCH AUTOSEL 4.4 04/47] gpio: tegra: Move driver registration to subsys_init level Thread-Topic: [PATCH AUTOSEL 4.4 04/47] gpio: tegra: Move driver registration to subsys_init level Thread-Index: AQHUQr8M0Masre2l3k6QjPlUC3lXfQ== Date: Sun, 2 Sep 2018 13:15:42 +0000 Message-ID: <20180902131533.184092-4-alexander.levin@microsoft.com> References: <20180902131533.184092-1-alexander.levin@microsoft.com> In-Reply-To: <20180902131533.184092-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY4PR21MB0184;6:oJv5PMj3kqmokd4aBJAZDjlZQ9tsGb9SNfX68Gp4+w5NNfHgYH552f6c9MJehxxcpbYABv6T7vtGNq7G+u4efZuIZlY38eBanEDwZ/HwCXl3fJVI9ebp/dMXZJS7+XDZD6qxQxivr8QYUl9NFNb+myxH6lsWefYLShLoWDJUyCqcpZEJkLvr9JrVJHdz0RmcMkH7zRqPliyvAX0SHCOewq9aYnEyWV5ldfFt4jonJHxGb9ZBs4FTpgkQKbwQ8yE9VGdDnZMd14OyyRJWmq5avJh5Bi1DwO3yGGOe5WiCQnw+c/dG5dwwZlBZyQemlldxTtogADTcXvei+R7DWpGM5orDiCwTg6FWC4CLe1rsU89P2S4MSsJJYhf222bzndQT4Br7sDd2dS4Bh/EG7zPk1YU0ljsB8ecjUqdTO2j3MffuwNdnl/u9M4/01l20i5/hph+t/FNpSz5j1fL8+rueYQ==;5:agdIj5MRVOjcpKGKajO06n+oywK7Ze4UamoYkQXf/FdQxS6vuE9sRMOZ/HduGh9itv+Pig+Wh8ubzV3OOb6tohe1IVHWPQfvQPqBV8H/Y+fZO5l6OLc+Qlz7uRkvnhGOp+sSzkCYYx5oAxJhx2f6YH3Tsy859HClOoxlOGsfjpo=;7:6hUN58n6Rc0CRjnGX8+B0tiN10JOL7bTxxMvrzxIuAuqZBhppMi4oPW77H6OaMy0TJdWqP0Ii0hdLlZR2DIfQGfoSpkwyk4nEFeI4M15JFq8+2UjytOVsJGmx5ixDNLQNXYnAyBQIdkEjh2llIHyQuvMe58WVvWYw8HI64kbqfx2s3gks8v07+tiUbp56pGsMGS+J+WUzd3WHnhDds783eVG2L6J7S5AV0nVRhANoDW/ppavYyEwt+8p4ZXeLv/1 x-ms-office365-filtering-correlation-id: 60ad5222-2b37-4d3f-59dc-08d610d62f56 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(4534165)(4627221)(201703031133081)(201702281549075)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0184; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: b1IBaekjFNQwV/NXczsyI2fvZiGwxhp/5R+jpdj0pj22RTRG3xjj7uobLjMWYEHM2URdfw2shjA2H0QhbVTebYdH3KlCCdFzehNODi3+lhqksb9NBD8aIRSOEAyKwN3lxHPOIIu7gtR+b9LQXiKp12OG7a1Yulm/imJR/G7TgBpCmdsuYCgPD87c7LhJE7+olZuaGd73W+Grvqo7fP0fIc/ShV6mEEdt7PMYvp81nhJJ+d5yOlOoYim92hbmF4JT+Ki2LyDL7dYQFGvAeDdKhVTNLM0mYU034VX9zr+zdva3kSpyochvaGiFUQqUziCgMbN0cTFItA1nJiSPmkR0TjY8JvRkUZcnvvKr1blH+NM= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 60ad5222-2b37-4d3f-59dc-08d610d62f56 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Sep 2018 13:15:42.1506 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0184 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dmitry Osipenko [ Upstream commit 40b25bce0adbe641a744d1291bc0e51fb7f3c3d8 ] There is a bug in regards to deferred probing within the drivers core that causes GPIO-driver to suspend after its users. The bug appears if GPIO-driver probe is getting deferred, which happens after introducing dependency on PINCTRL-driver for the GPIO-driver by defining "gpio-ranges" property in device-tree. The bug in the drivers core is old (more than 4 years now) and is well known, unfortunately there is no easy fix for it. The good news is that we can workaround the deferred probe issue by changing GPIO / PINCTRL drivers registration order and hence by moving PINCTRL driver registration to the arch_init level and GPIO to the subsys_init. Signed-off-by: Dmitry Osipenko Acked-by: Stefan Agner Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/gpio/gpio-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 896bf29776b0..fb2c1df4f588 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -591,4 +591,4 @@ static int __init tegra_gpio_init(void) { return platform_driver_register(&tegra_gpio_driver); } -postcore_initcall(tegra_gpio_init); +subsys_initcall(tegra_gpio_init); --=20 2.17.1