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Wysocki" CC: "kjlu@umn.edu" , Markus Elfring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , dl-linux-imx , Andy Duan , "linux-i2c@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Thread-Topic: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Thread-Index: AQHWN9w+Q0hrdD3Y0kW70eX0BSxaHKjX6AOAgAFl52A= Date: Mon, 15 Jun 2020 06:33:40 +0000 Message-ID: References: <20200601061640.27632-1-dinghao.liu@zju.edu.cn> <20200614091203.GC2878@kunai> In-Reply-To: <20200614091203.GC2878@kunai> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 1f7f00cf-9453-43cf-5bf7-08d810f60aef x-ms-traffictypediagnostic: AM6PR04MB5816: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7691; 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Wysocki" Subject: RE: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Thread-Topic: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Thread-Index: AQHWN9w+Q0hrdD3Y0kW70eX0BSxaHKjX6AOAgAFl52A= Date: Mon, 15 Jun 2020 06:33:40 +0000 Message-ID: References: <20200601061640.27632-1-dinghao.liu@zju.edu.cn> <20200614091203.GC2878@kunai> In-Reply-To: <20200614091203.GC2878@kunai> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=nxp.com; x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 1f7f00cf-9453-43cf-5bf7-08d810f60aef x-ms-traffictypediagnostic: AM6PR04MB5816: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7691; x-forefront-prvs: 04359FAD81 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: ynGJi13+7+qoVaQ1BuPL5pU416dIPos5KKrPoy7VoCY6qsk0LE6GpvvrwSE95jLWDCIiVwmhA5p21uS7qANG8N4pgDuSj60h7k5WLTkcTHmBgkfw2AazRpmgz/Ms3Dif7kccwklqU7YnbcqxxMa9qRHwoVX0lUiTaE0+loyOpXmPBtPG0z4sfUEHlRugfoJk1ZFBjAjYRqcQcArrGc0LYdxVPC+KRWhDomsoG546jBNhAez/ATQeUBROvmuCfNqvrVnJ87ULM6RqNukLs2+zqPwe+5ZbE1tjNRUSs3fhEzwZuJzeyV2/6as8HjazLQXZP7h7NsKWr/UO7cesoAGbAQ== x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:AM6PR04MB4966.eurprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(376002)(346002)(39860400002)(396003)(136003)(366004)(186003)(478600001)(7416002)(26005)(52536014)(7696005)(4326008)(2906002)(6506007)(5660300002)(55016002)(86362001)(54906003)(4744005)(9686003)(316002)(66946007)(33656002)(66556008)(66476007)(64756008)(66446008)(44832011)(8936002)(110136005)(8676002)(71200400001)(76116006); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: xOQbWgDDdfHgdukctlkQpW+16OTaJVaLufKzI/JXzccbhMp/cNQLkLEIK4YOq7IO4+Q+/LaOgc1JnlmvuA8cQb9Ye+51LwJc3luVpJhhPgQrR6GsIFsag+1jOPabvj5zys76Bgu9IrE2xTRKsKxfhCZDEd+EwFMAKFFpI28aIWY8yvXJlm+hcQ2y1ZKkv3cdvGKG62JpvYQebN1asjUhNQ+eSvOSnfiSab/ZRn999XFppSO3LM8YMsZkvommjZSofIXC3/QApuMlWg4sVdtiT2SuxbihiKrb1buM8Sfh6W851HzxzNoKBscsg5A6amvkNiDD6/m2NeiGoqbuhuwzQcwKaHSqHc1duwk5PMTbu6OgaS5xGwaIJYMXoB0q0sm7dsFhW2SGTsHLznwijl4/CuGh9/oWTvFMZ2ydMr68XE9nk6qRgHwrjpxWG4SQUkJJ/jwptHDwWGUun6dBghmUclh5YV7+62eHaJnTsy1tiwg= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1f7f00cf-9453-43cf-5bf7-08d810f60aef X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Jun 2020 06:33:40.3743 (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: qTbP9cAGOAw091QLY9zkFceLr40n2FaHrFQTrMImZmyHG60N9X5z0FNoZ7WXnyBYSbSCRgKKM4Oqu6qwUgsUgA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB5816 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200614_233352_057504_DA19682F X-CRM114-Status: GOOD ( 11.72 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andy Duan , Shawn Guo , Sascha Hauer , "kjlu@umn.edu" , "linux-kernel@vger.kernel.org" , Markus Elfring , dl-linux-imx , Pengutronix Kernel Team , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" , "linux-i2c@vger.kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org > From: Wolfram Sang > Sent: Sunday, June 14, 2020 5:12 PM > > On Mon, Jun 01, 2020 at 02:16:40PM +0800, Dinghao Liu wrote: > > pm_runtime_get_sync() increments the runtime PM usage counter even the > > call returns an error code. Thus a corresponding decrement is needed > > on the error handling path to keep the counter balanced. > > Can you point me to a discussion where it was decided that this is a proper fix? > I'd think we rather should fix pm_runtime_get_sync() but maybe there are > technical reasons against it. I had the same feeling. Copy pm guys to comments. Regards Aisheng _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel