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Sun, 2 Sep 2018 13:08:54 +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 13:08:54 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Dmitry Osipenko , Linus Walleij , Sasha Levin Subject: [PATCH AUTOSEL 4.9 04/62] gpio: tegra: Move driver registration to subsys_init level Thread-Topic: [PATCH AUTOSEL 4.9 04/62] gpio: tegra: Move driver registration to subsys_init level Thread-Index: AQHUQr4PYE3TlydWxEW1imTrnPUcAw== Date: Sun, 2 Sep 2018 13:08:37 +0000 Message-ID: <20180902065131.183542-4-alexander.levin@microsoft.com> References: <20180902065131.183542-1-alexander.levin@microsoft.com> In-Reply-To: <20180902065131.183542-1-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;CY4PR21MB0469;6:umK/lET+kZmAHsjVV+7yofRxKiVLuCPReEleE2k1Zj3H2ihKbby2IzpVGIBY0J1dFkqiI5Usc2ACnaYfqiq2Y2hsz9nrsxhvuJc9VW4p7zOHUNfJ6v+PH6BKzfV7EA3N9UOathJzEf1D46BdO2TmFZjQKJ7wKPAr3QstVY+UZU71bOIMkIM6WL69cGASsvQ7tTV7Jx7cFjJEvf+z1Th6XtVhHgQhQ/Vw/q9UgkSqiycPk8f1Byrp7j76OdUo26fy4dLTp/zLDCzR6PkNywJ128Ka2YkO0Kk37BAZvBbU+jWdbL/lW5OESioNSlAFn9GUUM3igU1C6oRhp5bESXKT7HUpIYaiIIbRmVfP3+o4xt65nCEGGzH89kJGog1r54U0L5QQiYMaI2mvIn+BrhYwpUVN3A9QOaFyi2ADYJdg3F1Hx8w+4Cu+WJMr6l6qkf4OSl/7rOLRaSFIqm2HpbkYzQ==;5:cpgKqkspSN3RzERkI+zVYBu36VlKqer7U5Ddmcc0kwJJgN7C3OFCcqRoAYEYqKx2RL36ZaKoDwQiDZQHi/CCvEaS9A2mMj0lLBb+FvMXLKqntJg7l7SsWlx2KEsChHGGThwFcQTzX6EdxaTv3xc2KX89fkACTsDQZxY/NRx67AA=;7:Kh9Lc2QLwyyZ94+lQYs63ZxTnqTKLMJfzXzIDMxMVRivp3sp1zPSuLRcaQkknJicfbNJPaRMIvM+GnPLEEsDCRlHJdDUkNZWAdFekBfaBrxCsx+nHIls2DIdWn7qZfPc3h6za1wTnA20OdaLOCw+r8Novb7opxtcJB0ZcAV7jYsdk60sPVzlE0CjE3vloYozNpKAsUgyntn3I283QldyA1MjZis1Yc0sVB87hR1s4qio0Vzsn2hHei9O1riEYHPa x-ms-office365-filtering-correlation-id: 8394d82e-7f3f-4c5e-361d-08d610d53c33 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:CY4PR21MB0469; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: 6mVLy8tjzaujJxyKjG8Qjprr5MlcMD9GnpPYO2+7DNZaCVmIU1L4QhblJWvtc7z767AZOnh7Y190a7w9OuUmAxbw3RduPQVdXgOZHTMwRkiW7+2OxxxbWw525tdhWc8XJuIlb/sr6OfGgesVQLwL2F6vn9YrHPj+mSyiq7gB9dQhVJE+0Ftjaj6F3G2JwfWFHmIvemb7CE8U43b7NQLF3u0I9uDhXt3WucW9iRFDfich+khYqec3+LVflSWIReDlVIXtifN2opLYgffTJ+4wwG9JjKevFcQgNj4V1w0gN8mJleUYIZXhzE526A0QJ3vT+fEwUokppy81Rx2C0R5wIdTYM+txa+YXEOqzwP5lQkA= 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: 8394d82e-7f3f-4c5e-361d-08d610d53c33 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Sep 2018 13:08:37.3625 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0469 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 661b0e34e067..05d3241ad20b 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -723,4 +723,4 @@ 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