From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: alexandre.belloni@bootlin.com, heiko@sntech.de,
Yangtao Li <tiny.windzz@gmail.com>,
nicolas.ferre@microchip.com, matthias.bgg@gmail.com,
linux-riscv@lists.infradead.org, festevam@gmail.com,
f.fainelli@gmail.com, shc_work@mail.ru, khilman@baylibre.com,
ludovic.desroches@microchip.com, jonathanh@nvidia.com,
linux-rockchip@lists.infradead.org, wens@csie.org,
bcm-kernel-feedback-list@broadcom.com, linux-imx@nxp.com,
slemieux.tyco@gmail.com, linux-pwm@vger.kernel.org,
rjui@broadcom.com, s.hauer@pengutronix.de, mripard@kernel.org,
vz@mleia.com, linux-mediatek@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org, paul.walmsley@sifive.com,
linux-tegra@vger.kernel.org, linux-amlogic@lists.infradead.org,
Lee Jones <lee.jones@linaro.org>,
linux-arm-kernel@lists.infradead.org, sbranden@broadcom.com,
linux-kernel@vger.kernel.org, palmer@dabbelt.com,
kernel@pengutronix.de, shawnguo@kernel.org,
claudiu.beznea@microchip.com, nsaenzjulienne@suse.de
Subject: Re: [PATCH 01/32] pwm: sun4i: convert to devm_platform_ioremap_resource
Date: Thu, 12 Nov 2020 22:14:29 +0100 [thread overview]
Message-ID: <20201112211429.kfyqzkmmchjo6pll@pengutronix.de> (raw)
In-Reply-To: <20201112190649.GA908613@ulmo>
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Hello Thierry,
On Thu, Nov 12, 2020 at 08:06:49PM +0100, Thierry Reding wrote:
> I also think that it's overly narrow is scope, so you can't actually
> "blindly" use this helper and I've seen quite a few cases where this was
> unknowingly used for cases where it shouldn't have been used and then
> broke things (because some drivers must not do the request_mem_region()
> for example).
You have a link to such an accident?
> And then there are cases where the driver needs the
> resource for some other purpose, so you can't use the helper either, or
> at least it looses all of its advantages in those cases.
There is devm_platform_get_and_ioremap_resource() for (some of) these
cases.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | https://www.pengutronix.de/ |
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next prev parent reply other threads:[~2020-11-12 21:15 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-29 8:05 [PATCH 01/32] pwm: sun4i: convert to devm_platform_ioremap_resource Yangtao Li
2019-12-29 8:05 ` [PATCH 02/32] pwm: fsl-ftm: " Yangtao Li
2020-05-23 17:24 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 03/32] pwm: rcar: " Yangtao Li
2020-05-23 17:24 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 04/32] pwm: renesas-tpu: " Yangtao Li
2020-05-23 17:12 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 05/32] pwm: ep93xx: " Yangtao Li
2020-05-23 17:24 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 06/32] pwm: tegra: " Yangtao Li
2020-05-23 17:23 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 07/32] pwm: mediatek: " Yangtao Li
2020-05-23 17:23 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 08/32] pwm: sti: " Yangtao Li
2020-05-23 17:23 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 09/32] pwm: pxa: " Yangtao Li
2020-05-23 17:20 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 10/32] pwm: zx: " Yangtao Li
2020-05-23 17:23 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 11/32] pwm: spear: " Yangtao Li
2020-05-23 17:23 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 12/32] pwm: bcm-kona: " Yangtao Li
2020-05-23 17:20 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 13/32] pwm: lpc32xx: " Yangtao Li
2020-05-23 17:20 ` Uwe Kleine-König
2020-11-12 21:29 ` Vladimir Zapolskiy
2019-12-29 8:05 ` [PATCH 14/32] pwm: meson: " Yangtao Li
2019-12-31 14:53 ` Martin Blumenstingl
2020-05-23 17:25 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 15/32] pwm: rockchip: " Yangtao Li
2019-12-30 8:39 ` Heiko Stuebner
2020-05-23 17:25 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 16/32] pwm: bcm-iproc: " Yangtao Li
2020-05-23 17:22 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 17/32] pwm: samsung: " Yangtao Li
2020-05-23 17:21 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 18/32] pwm: tiehrpwm: " Yangtao Li
2020-05-23 17:22 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 19/32] pwm: puv3: " Yangtao Li
2020-05-23 17:19 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 20/32] pwm: imx: " Yangtao Li
2020-05-23 17:22 ` Uwe Kleine-König
2019-12-29 8:05 ` [PATCH 21/32] pwm: tiecap: " Yangtao Li
2020-05-23 17:19 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 22/32] pwm: bcm2835: " Yangtao Li
2020-05-23 17:18 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 23/32] pwm: berlin: " Yangtao Li
2020-05-23 17:18 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 24/32] pwm: vt8500: " Yangtao Li
2020-05-23 17:14 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 25/32] pwm: brcmstb: " Yangtao Li
2020-01-07 10:54 ` Nicolas Saenz Julienne
2020-05-23 17:25 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 26/32] pwm: mtk-disp: " Yangtao Li
2020-02-20 20:49 ` Matthias Brugger
2019-12-29 8:06 ` [PATCH 27/32] pwm: clps711x: " Yangtao Li
2020-05-23 17:17 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 28/32] pwm: img: " Yangtao Li
2020-05-23 17:16 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 29/32] pwm: lpc18xx-sct: " Yangtao Li
2020-05-23 17:14 ` Uwe Kleine-König
2020-11-12 21:29 ` Vladimir Zapolskiy
2019-12-29 8:06 ` [PATCH 30/32] pwm: hibvt: do some cleanup Yangtao Li
2020-02-20 20:41 ` Uwe Kleine-König
2020-05-23 17:44 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 31/32] pwm: sifive: convert to devm_platform_ioremap_resource Yangtao Li
2020-05-23 17:15 ` Uwe Kleine-König
2019-12-29 8:06 ` [PATCH 32/32] pwm: atmel: " Yangtao Li
2020-01-06 10:32 ` Claudiu.Beznea
2020-05-23 17:25 ` Uwe Kleine-König
2020-05-23 17:11 ` [PATCH 01/32] pwm: sun4i: " Uwe Kleine-König
2020-11-12 16:13 ` Uwe Kleine-König
2020-11-12 19:06 ` Thierry Reding
2020-11-12 21:14 ` Uwe Kleine-König [this message]
2020-11-13 7:03 ` About devm_platform_ioremap_resource [Was: Re: [PATCH 01/32] pwm: sun4i: convert to devm_platform_ioremap_resource] Uwe Kleine-König
2020-11-13 9:12 ` Bartosz Golaszewski
2020-11-13 9:35 ` Uwe Kleine-König
2020-11-13 16:11 ` Thierry Reding
2020-11-13 17:40 ` Robin Murphy
2020-11-19 17:08 ` Uwe Kleine-König
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