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Tue, 23 Jan 2018 23:58:03 -0500 Received: from mail-by2nam03on0097.outbound.protection.outlook.com ([104.47.42.97]:48419 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752730AbeAXEPS (ORCPT ); Tue, 23 Jan 2018 23:15:18 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Mirza Krak , Sandy Huang , "Sasha Levin" Subject: [PATCH AUTOSEL for 4.14 039/100] drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable Thread-Topic: [PATCH AUTOSEL for 4.14 039/100] drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable Thread-Index: AQHTlMncXkOSpNsoAEC/2og/udg0+Q== Date: Wed, 24 Jan 2018 04:14:43 +0000 Message-ID: <20180124041414.32065-39-alexander.levin@microsoft.com> References: <20180124041414.32065-1-alexander.levin@microsoft.com> In-Reply-To: <20180124041414.32065-1-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;DM5PR2101MB0998;7:sj2SeZWPXIa/uXzUdp5q4giyyQx6nHcaKV9M8Fqr2wVbD9bO61Z2NOhgtk544A3tsBtIRAlnwkv+pT8ONLSlg7JyKmyWWSvrfLXWowU4MYanrEJF4AsFy6TenK+TeN+WrW1z5SpziwbpbLabgDf8Pd3rC5mIJqoM3aCz3TN5AX0a9x5OH5BAJ+T3f86BCSd5KYOpFNBCRa+6DW/vPG7EbK/J5QjnHQJajryvRuEZE8OxdGT9YqNqs4oesz0csBAa x-ms-office365-filtering-correlation-id: 6b9af398-1ace-4c27-d2a5-08d562e1108c x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(2017052603307)(7193020);SRVR:DM5PR2101MB0998; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: 60jk4x1P9CVlIH0weg7Wq9kaI9+i8oF7VoyKvfEvCSQVVJgDAf5eXAQqEhF/0kj1mt4TtpIeIop3vqU3zG8Ljw== 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: 6b9af398-1ace-4c27-d2a5-08d562e1108c X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Jan 2018 04:14:43.4503 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0998 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Mirza Krak [ Upstream commit 517f56839f581618d24f2e67a35738a5c6cbaecb ] In the case where the bind gets deferred we would end up with a un-balanced runtime PM enable call. Fix this by simply moving the pm_runtime_enable call to the end of the bind function when all paths have succeeded. Signed-off-by: Mirza Krak Signed-off-by: Sandy Huang Link: https://patchwork.freedesktop.org/patch/msgid/1510734286-37434-1-git-= send-email-mirza.krak@endian.se Signed-off-by: Sasha Levin --- drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockc= hip/dw-mipi-dsi.c index 9a20b9dc27c8..f7fc652b0027 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -1275,8 +1275,6 @@ static int dw_mipi_dsi_bind(struct device *dev, struc= t device *master, goto err_pllref; } =20 - pm_runtime_enable(dev); - dsi->dsi_host.ops =3D &dw_mipi_dsi_host_ops; dsi->dsi_host.dev =3D dev; ret =3D mipi_dsi_host_register(&dsi->dsi_host); @@ -1291,6 +1289,7 @@ static int dw_mipi_dsi_bind(struct device *dev, struc= t device *master, } =20 dev_set_drvdata(dev, dsi); + pm_runtime_enable(dev); return 0; =20 err_mipi_dsi_host: --=20 2.11.0