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[95.24.149.38]) by smtp.gmail.com with ESMTPSA id g8-20020a2eb5c8000000b002cc2141ca86sm661424ljn.93.2023.12.12.04.36.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Dec 2023 04:36:37 -0800 (PST) References: <20231211175023.1680247-1-mike.rudenko@gmail.com> <20231211175023.1680247-9-mike.rudenko@gmail.com> <20231211181935.GG27535@pendragon.ideasonboard.com> User-agent: mu4e 1.10.7; emacs 29.1 From: Mikhail Rudenko To: Laurent Pinchart Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Sakari Ailus , Jacopo Mondi , Christophe JAILLET , Dave Stevenson , Mauro Carvalho Chehab Subject: Re: [PATCH 08/19] media: i2c: ov4689: Enable runtime PM before registering sub-device Date: Tue, 12 Dec 2023 15:32:31 +0300 In-reply-to: <20231211181935.GG27535@pendragon.ideasonboard.com> Message-ID: <87plzbppgq.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on morse.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (morse.vger.email [0.0.0.0]); Tue, 12 Dec 2023 04:36:48 -0800 (PST) On 2023-12-11 at 20:19 +02, Laurent Pinchart wrote: > Hi Mikhail, > > Thank you for the patch. > > On Mon, Dec 11, 2023 at 08:50:11PM +0300, Mikhail Rudenko wrote: >> As the sensor may be accessible right after its async sub-device is >> registered, enable runtime PM before doing so. > > While at it, could you also switch to runtime PM autosuspend, possibly > in a separate patch ? See for instance the imx290 driver. I actually had a plan to do this in this series, but it had grown a little bigger then expected and I had to drop a few non-essential patches, including PM autosuspend. But if you suggest, I'll bring in back in v2. >> Signed-off-by: Mikhail Rudenko >> --- >> drivers/media/i2c/ov4689.c | 8 ++++---- >> 1 file changed, 4 insertions(+), 4 deletions(-) >> >> diff --git a/drivers/media/i2c/ov4689.c b/drivers/media/i2c/ov4689.c >> index 2eef64cd0070..ba33b0ced532 100644 >> --- a/drivers/media/i2c/ov4689.c >> +++ b/drivers/media/i2c/ov4689.c >> @@ -874,16 +874,16 @@ static int ov4689_probe(struct i2c_client *client) >> goto err_clean_entity; >> } >> >> + pm_runtime_set_active(dev); >> + pm_runtime_enable(dev); >> + pm_runtime_idle(dev); >> + >> ret = v4l2_async_register_subdev_sensor(sd); >> if (ret) { >> dev_err(dev, "v4l2 async register subdev failed\n"); >> goto err_clean_subdev; > > Don't you need to disable runtime PM in the error path ? Ack, will improve error in v2. >> } >> >> - pm_runtime_set_active(dev); >> - pm_runtime_enable(dev); >> - pm_runtime_idle(dev); >> - >> return 0; >> >> err_clean_subdev: -- Best regards, Mikhail Rudenko