From: Sam Protsenko <semen.protsenko@linaro.org> To: Mateusz Majewski <m.majewski2@samsung.com> Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Tomasz Figa <tomasz.figa@gmail.com>, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Sylwester Nawrocki <s.nawrocki@samsung.com>, Alim Akhtar <alim.akhtar@samsung.com>, Linus Walleij <linus.walleij@linaro.org>, Marek Szyprowski <m.szyprowski@samsung.com> Subject: Re: [PATCH 1/4] pinctrl: samsung: defer pinctrl_enable Date: Fri, 6 Oct 2023 21:14:45 -0500 [thread overview] Message-ID: <CAPLW+4nFLeBqNRh7g8a5eJZdT_G6Dtc4zs6nkyTpcG++mYHxfA@mail.gmail.com> (raw) In-Reply-To: <20231006125557.212681-2-m.majewski2@samsung.com> On Fri, Oct 6, 2023 at 8:01 AM Mateusz Majewski <m.majewski2@samsung.com> wrote: > > dev_pinctrl_register function immediately enables the pinctrl subsystem, Nitpick: dev -> devm > which is unpreferable in general, since drivers might be unable to > handle calls immediately. Hence devm_pinctrl_register_and_init, which > does not call pinctrl_enable, is preferred. > > In case of our driver using the old function does not seem to be > problematic for now, but will become an issue when we postpone parts of > pinctrl initialization in a future commit, and it is a good idea to move > off a deprecated-ish function anyway. > > Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com> > --- > drivers/pinctrl/samsung/pinctrl-samsung.c | 12 ++++++++---- > 1 file changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c > index e54847040b4a..e496af72a587 100644 > --- a/drivers/pinctrl/samsung/pinctrl-samsung.c > +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c > @@ -904,11 +904,11 @@ static int samsung_pinctrl_register(struct platform_device *pdev, > if (ret) > return ret; > > - drvdata->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, > - drvdata); > - if (IS_ERR(drvdata->pctl_dev)) { > + ret = devm_pinctrl_register_and_init(&pdev->dev, ctrldesc, drvdata, > + &drvdata->pctl_dev); > + if (ret) { > dev_err(&pdev->dev, "could not register pinctrl driver\n"); > - return PTR_ERR(drvdata->pctl_dev); > + return ret; > } > > for (bank = 0; bank < drvdata->nr_banks; ++bank) { > @@ -1176,6 +1176,10 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) > if (ret) > goto err_unregister; > > + ret = pinctrl_enable(drvdata->pctl_dev); > + if (ret) > + goto err_unregister; > + > platform_set_drvdata(pdev, drvdata); > > return 0; > -- > 2.42.0 >
WARNING: multiple messages have this Message-ID (diff)
From: Sam Protsenko <semen.protsenko@linaro.org> To: Mateusz Majewski <m.majewski2@samsung.com> Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Tomasz Figa <tomasz.figa@gmail.com>, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Sylwester Nawrocki <s.nawrocki@samsung.com>, Alim Akhtar <alim.akhtar@samsung.com>, Linus Walleij <linus.walleij@linaro.org>, Marek Szyprowski <m.szyprowski@samsung.com> Subject: Re: [PATCH 1/4] pinctrl: samsung: defer pinctrl_enable Date: Fri, 6 Oct 2023 21:14:45 -0500 [thread overview] Message-ID: <CAPLW+4nFLeBqNRh7g8a5eJZdT_G6Dtc4zs6nkyTpcG++mYHxfA@mail.gmail.com> (raw) In-Reply-To: <20231006125557.212681-2-m.majewski2@samsung.com> On Fri, Oct 6, 2023 at 8:01 AM Mateusz Majewski <m.majewski2@samsung.com> wrote: > > dev_pinctrl_register function immediately enables the pinctrl subsystem, Nitpick: dev -> devm > which is unpreferable in general, since drivers might be unable to > handle calls immediately. Hence devm_pinctrl_register_and_init, which > does not call pinctrl_enable, is preferred. > > In case of our driver using the old function does not seem to be > problematic for now, but will become an issue when we postpone parts of > pinctrl initialization in a future commit, and it is a good idea to move > off a deprecated-ish function anyway. > > Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com> > --- > drivers/pinctrl/samsung/pinctrl-samsung.c | 12 ++++++++---- > 1 file changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c > index e54847040b4a..e496af72a587 100644 > --- a/drivers/pinctrl/samsung/pinctrl-samsung.c > +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c > @@ -904,11 +904,11 @@ static int samsung_pinctrl_register(struct platform_device *pdev, > if (ret) > return ret; > > - drvdata->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, > - drvdata); > - if (IS_ERR(drvdata->pctl_dev)) { > + ret = devm_pinctrl_register_and_init(&pdev->dev, ctrldesc, drvdata, > + &drvdata->pctl_dev); > + if (ret) { > dev_err(&pdev->dev, "could not register pinctrl driver\n"); > - return PTR_ERR(drvdata->pctl_dev); > + return ret; > } > > for (bank = 0; bank < drvdata->nr_banks; ++bank) { > @@ -1176,6 +1176,10 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) > if (ret) > goto err_unregister; > > + ret = pinctrl_enable(drvdata->pctl_dev); > + if (ret) > + goto err_unregister; > + > platform_set_drvdata(pdev, drvdata); > > return 0; > -- > 2.42.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-10-07 2:15 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20231006130032eucas1p18c6f5c39614768911730fa6ed0201ee3@eucas1p1.samsung.com> 2023-10-06 12:55 ` [PATCH 0/4] Fix Samsung pinctrl driver static allocation of GPIO base warning Mateusz Majewski 2023-10-06 12:55 ` Mateusz Majewski [not found] ` <CGME20231006130038eucas1p1c849a21714227a11759681ef909ffd94@eucas1p1.samsung.com> 2023-10-06 12:55 ` [PATCH 1/4] pinctrl: samsung: defer pinctrl_enable Mateusz Majewski 2023-10-06 12:55 ` Mateusz Majewski 2023-10-07 2:14 ` Sam Protsenko [this message] 2023-10-07 2:14 ` Sam Protsenko [not found] ` <CGME20231006130041eucas1p1fd945c734c0d35067107e7c699201bdb@eucas1p1.samsung.com> 2023-10-06 12:55 ` [PATCH 2/4] pinctrl: samsung: use add_pin_ranges method to add pinctrl ranges Mateusz Majewski 2023-10-06 12:55 ` Mateusz Majewski [not found] ` <CGME20231006130042eucas1p10679037ebd812183a5edff0b7c1e8b6a@eucas1p1.samsung.com> 2023-10-06 12:55 ` [PATCH 3/4] pinctrl: samsung: choose GPIO numberspace base dynamically Mateusz Majewski 2023-10-06 12:55 ` Mateusz Majewski [not found] ` <CGME20231006130044eucas1p17a141ec5aafca3d5af5295049f8b1651@eucas1p1.samsung.com> 2023-10-06 12:55 ` [PATCH 4/4] pinctrl: samsung: do not offset pinctrl numberspaces Mateusz Majewski 2023-10-06 12:55 ` Mateusz Majewski 2023-10-07 2:14 ` [PATCH 0/4] Fix Samsung pinctrl driver static allocation of GPIO base warning Sam Protsenko 2023-10-07 2:14 ` Sam Protsenko 2023-10-08 13:09 ` Krzysztof Kozlowski 2023-10-08 13:09 ` Krzysztof Kozlowski 2023-10-08 18:45 ` Sam Protsenko 2023-10-08 18:45 ` Sam Protsenko 2023-10-09 9:42 ` Krzysztof Kozlowski 2023-10-09 9:42 ` Krzysztof Kozlowski 2023-10-09 9:52 ` Marek Szyprowski 2023-10-09 9:52 ` Marek Szyprowski 2023-10-09 10:02 ` Marek Szyprowski 2023-10-09 10:02 ` Marek Szyprowski 2023-10-09 10:38 ` Krzysztof Kozlowski 2023-10-09 10:38 ` Krzysztof Kozlowski 2023-10-10 12:09 ` Linus Walleij 2023-10-10 12:09 ` Linus Walleij
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