From: Michael Walle <michael@walle.cc>
To: Mark Brown <broonie@kernel.org>
Cc: "Robin Murphy" <robin.murphy@arm.com>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org,
linux-pwm@vger.kernel.org, linux-watchdog@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
"Linus Walleij" <linus.walleij@linaro.org>,
"Bartosz Golaszewski" <bgolaszewski@baylibre.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Jean Delvare" <jdelvare@suse.com>,
"Guenter Roeck" <linux@roeck-us.net>,
"Lee Jones" <lee.jones@linaro.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Wim Van Sebroeck" <wim@linux-watchdog.org>,
"Shawn Guo" <shawnguo@kernel.org>, "Li Yang" <leoyang.li@nxp.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Jason Cooper" <jason@lakedaemon.net>,
"Marc Zyngier" <maz@kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v3 02/16] mfd: mfd-core: Don't overwrite the dma_mask of the child device
Date: Thu, 14 May 2020 22:45:53 +0200 [thread overview]
Message-ID: <8fb998f882938680d98f1c2f6f8254c1@walle.cc> (raw)
In-Reply-To: <20200428152543.GI5677@sirena.org.uk>
Am 2020-04-28 17:25, schrieb Mark Brown:
> On Tue, Apr 28, 2020 at 03:49:49PM +0100, Robin Murphy wrote:
>
>> For better or worse, the platform bus is the dumping ground for random
>> crap,
>> so we just have to deal with all the abstraction breakage that leaks
>> out of
>> that.
>
> The reason we're using the platform bus for this is that historically
> people were creating buses which were essentially carbon copies of the
> platform bus with the name changed and it was felt that rather than
> duplicate code it was better to just use platform devices with no MMIO
> ranges defined. If there's some assumptions about DMA for platform
> devices floating about somewhere it might be reasonable to revisit this
> and create a non-DMA variant of platform devices since there is a
> meaningful difference.
Was there any conclusion? Should I keep or drop this patch in the next
version
of this series?
--
-michael
WARNING: multiple messages have this Message-ID (diff)
From: Michael Walle <michael-QKn5cuLxLXY@public.gmane.org>
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: "Robin Murphy" <robin.murphy-5wv7dgnIgG8@public.gmane.org>,
"Andy Shevchenko"
<andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-hwmon-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-pwm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
"Linus Walleij"
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"Bartosz Golaszewski"
<bgolaszewski-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
"Rob Herring" <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Jean Delvare" <jdelvare-IBi9RG/b67k@public.gmane.org>,
"Guenter Roeck" <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>,
"Lee Jones" <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"Thierry Reding"
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"Uwe Kleine-König"
<u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"Wim Van Sebroeck"
<wim-Q8PRGTgFL9WUCWQAtAn6Ix2eb7JE58TQ@public.gmane.org>,
"Shawn Guo" <shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Li Yang" <leoyang.li-3arQi8VN3Tc@public.gmane.org>
Subject: Re: [PATCH v3 02/16] mfd: mfd-core: Don't overwrite the dma_mask of the child device
Date: Thu, 14 May 2020 22:45:53 +0200 [thread overview]
Message-ID: <8fb998f882938680d98f1c2f6f8254c1@walle.cc> (raw)
In-Reply-To: <20200428152543.GI5677-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
Am 2020-04-28 17:25, schrieb Mark Brown:
> On Tue, Apr 28, 2020 at 03:49:49PM +0100, Robin Murphy wrote:
>
>> For better or worse, the platform bus is the dumping ground for random
>> crap,
>> so we just have to deal with all the abstraction breakage that leaks
>> out of
>> that.
>
> The reason we're using the platform bus for this is that historically
> people were creating buses which were essentially carbon copies of the
> platform bus with the name changed and it was felt that rather than
> duplicate code it was better to just use platform devices with no MMIO
> ranges defined. If there's some assumptions about DMA for platform
> devices floating about somewhere it might be reasonable to revisit this
> and create a non-DMA variant of platform devices since there is a
> meaningful difference.
Was there any conclusion? Should I keep or drop this patch in the next
version
of this series?
--
-michael
WARNING: multiple messages have this Message-ID (diff)
From: Michael Walle <michael@walle.cc>
To: Mark Brown <broonie@kernel.org>
Cc: linux-pwm@vger.kernel.org,
"Linus Walleij" <linus.walleij@linaro.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Lee Jones" <lee.jones@linaro.org>,
"Jason Cooper" <jason@lakedaemon.net>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Marc Zyngier" <maz@kernel.org>,
"Bartosz Golaszewski" <bgolaszewski@baylibre.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Guenter Roeck" <linux@roeck-us.net>,
devicetree@vger.kernel.org, "Jean Delvare" <jdelvare@suse.com>,
linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org,
"Rob Herring" <robh+dt@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Wim Van Sebroeck" <wim@linux-watchdog.org>,
linux-arm-kernel@lists.infradead.org,
linux-hwmon@vger.kernel.org, "Shawn Guo" <shawnguo@kernel.org>,
linux-kernel@vger.kernel.org, "Li Yang" <leoyang.li@nxp.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Robin Murphy" <robin.murphy@arm.com>
Subject: Re: [PATCH v3 02/16] mfd: mfd-core: Don't overwrite the dma_mask of the child device
Date: Thu, 14 May 2020 22:45:53 +0200 [thread overview]
Message-ID: <8fb998f882938680d98f1c2f6f8254c1@walle.cc> (raw)
In-Reply-To: <20200428152543.GI5677@sirena.org.uk>
Am 2020-04-28 17:25, schrieb Mark Brown:
> On Tue, Apr 28, 2020 at 03:49:49PM +0100, Robin Murphy wrote:
>
>> For better or worse, the platform bus is the dumping ground for random
>> crap,
>> so we just have to deal with all the abstraction breakage that leaks
>> out of
>> that.
>
> The reason we're using the platform bus for this is that historically
> people were creating buses which were essentially carbon copies of the
> platform bus with the name changed and it was felt that rather than
> duplicate code it was better to just use platform devices with no MMIO
> ranges defined. If there's some assumptions about DMA for platform
> devices floating about somewhere it might be reasonable to revisit this
> and create a non-DMA variant of platform devices since there is a
> meaningful difference.
Was there any conclusion? Should I keep or drop this patch in the next
version
of this series?
--
-michael
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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:[~2020-05-14 20:46 UTC|newest]
Thread overview: 177+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-23 17:45 [PATCH v3 00/16] Add support for Kontron sl28cpld Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 01/16] include/linux/ioport.h: add helper to define REG resource constructs Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 02/16] mfd: mfd-core: Don't overwrite the dma_mask of the child device Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-28 12:45 ` Andy Shevchenko
2020-04-28 12:45 ` Andy Shevchenko
2020-04-28 12:45 ` Andy Shevchenko
2020-04-28 13:06 ` Robin Murphy
2020-04-28 13:06 ` Robin Murphy
2020-04-28 13:06 ` Robin Murphy
2020-04-28 14:29 ` Andy Shevchenko
2020-04-28 14:29 ` Andy Shevchenko
2020-04-28 14:29 ` Andy Shevchenko
2020-04-28 14:49 ` Robin Murphy
2020-04-28 14:49 ` Robin Murphy
2020-04-28 14:49 ` Robin Murphy
2020-04-28 15:25 ` Mark Brown
2020-04-28 15:25 ` Mark Brown
2020-04-28 15:25 ` Mark Brown
2020-05-14 20:45 ` Michael Walle [this message]
2020-05-14 20:45 ` Michael Walle
2020-05-14 20:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 03/16] mfd: mfd-core: match device tree node against reg property Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-29 22:18 ` Michael Walle
2020-04-29 22:18 ` Michael Walle
2020-04-29 22:18 ` Michael Walle
2020-05-15 10:28 ` Lee Jones
2020-05-15 10:28 ` Lee Jones
2020-05-15 10:28 ` Lee Jones
2020-05-25 17:36 ` Michael Walle
2020-05-25 17:36 ` Michael Walle
2020-05-25 17:36 ` Michael Walle
2020-05-26 7:24 ` Lee Jones
2020-05-26 7:24 ` Lee Jones
2020-05-26 7:24 ` Lee Jones
2020-05-26 15:54 ` Michael Walle
2020-05-26 15:54 ` Michael Walle
2020-05-26 15:54 ` Michael Walle
2020-05-26 16:03 ` Andy Shevchenko
2020-05-26 16:03 ` Andy Shevchenko
2020-05-26 16:03 ` Andy Shevchenko
2020-05-27 6:53 ` Lee Jones
2020-05-27 6:53 ` Lee Jones
2020-05-27 6:53 ` Lee Jones
2020-06-08 14:24 ` Lee Jones
2020-06-08 14:24 ` Lee Jones
2020-06-08 14:24 ` Lee Jones
2020-06-08 15:21 ` Michael Walle
2020-06-08 15:21 ` Michael Walle
2020-06-08 15:21 ` Michael Walle
2020-06-08 18:45 ` Lee Jones
2020-06-08 18:45 ` Lee Jones
2020-06-08 18:45 ` Lee Jones
2020-04-23 17:45 ` [PATCH v3 04/16] dt-bindings: mfd: Add bindings for sl28cpld Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-28 12:48 ` Andy Shevchenko
2020-04-28 12:48 ` Andy Shevchenko
2020-04-28 12:48 ` Andy Shevchenko
2020-04-28 14:39 ` Michael Walle
2020-04-28 14:39 ` Michael Walle
2020-04-28 14:39 ` Michael Walle
2020-04-28 14:49 ` Andy Shevchenko
2020-04-28 14:49 ` Andy Shevchenko
2020-04-28 14:49 ` Andy Shevchenko
2020-04-23 17:45 ` [PATCH v3 05/16] mfd: Add support for Kontron sl28cpld management controller Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-28 12:50 ` Andy Shevchenko
2020-04-28 12:50 ` Andy Shevchenko
2020-04-28 12:50 ` Andy Shevchenko
2020-04-28 14:43 ` Michael Walle
2020-04-28 14:43 ` Michael Walle
2020-04-28 14:43 ` Michael Walle
2020-04-28 14:49 ` Andy Shevchenko
2020-04-28 14:49 ` Andy Shevchenko
2020-04-28 14:49 ` Andy Shevchenko
2020-04-29 6:27 ` Lee Jones
2020-04-29 6:27 ` Lee Jones
2020-04-29 6:27 ` Lee Jones
2020-05-11 21:13 ` Rob Herring
2020-05-11 21:13 ` Rob Herring
2020-05-11 21:13 ` Rob Herring
2020-05-11 21:44 ` Michael Walle
2020-05-11 21:44 ` Michael Walle
2020-05-11 21:44 ` Michael Walle
2020-05-11 22:29 ` Michael Walle
2020-05-11 22:29 ` Michael Walle
2020-05-11 22:29 ` Michael Walle
2020-05-12 21:59 ` Rob Herring
2020-05-12 21:59 ` Rob Herring
2020-05-12 21:59 ` Rob Herring
2020-05-13 22:15 ` Michael Walle
2020-05-13 22:15 ` Michael Walle
2020-05-13 22:15 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 06/16] irqchip: add sl28cpld interrupt controller support Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-27 11:40 ` Thomas Gleixner
2020-04-27 11:40 ` Thomas Gleixner
2020-04-27 11:40 ` Thomas Gleixner
2020-04-27 17:40 ` Michael Walle
2020-04-27 17:40 ` Michael Walle
2020-04-27 17:40 ` Michael Walle
2020-04-27 17:44 ` Mark Brown
2020-04-27 17:44 ` Mark Brown
2020-04-27 17:44 ` Mark Brown
2020-04-27 18:01 ` Michael Walle
2020-04-27 18:01 ` Michael Walle
2020-04-27 18:01 ` Michael Walle
2020-04-27 18:05 ` Mark Brown
2020-04-27 18:05 ` Mark Brown
2020-04-27 18:05 ` Mark Brown
2020-04-27 19:00 ` Thomas Gleixner
2020-04-27 19:00 ` Thomas Gleixner
2020-04-27 19:00 ` Thomas Gleixner
2020-04-23 17:45 ` [PATCH v3 07/16] watchdog: add support for sl28cpld watchdog Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-25 17:02 ` Guenter Roeck
2020-04-25 17:02 ` Guenter Roeck
2020-04-23 17:45 ` [PATCH v3 08/16] pwm: add support for sl28cpld PWM controller Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-05-11 20:45 ` Rob Herring
2020-05-11 20:45 ` Rob Herring
2020-05-11 20:45 ` Rob Herring
2020-04-23 17:45 ` [PATCH v3 09/16] gpiolib: Introduce gpiochip_irqchip_add_domain() Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-27 11:42 ` Thomas Gleixner
2020-04-27 11:42 ` Thomas Gleixner
2020-04-27 11:42 ` Thomas Gleixner
2020-04-27 17:49 ` Michael Walle
2020-04-27 17:49 ` Michael Walle
2020-04-27 17:49 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 10/16] gpio: add a reusable generic gpio_chip using regmap Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-05-12 12:48 ` Bartosz Golaszewski
2020-05-12 12:48 ` Bartosz Golaszewski
2020-05-12 12:48 ` Bartosz Golaszewski
2020-05-12 14:41 ` Michael Walle
2020-05-12 14:41 ` Michael Walle
2020-05-12 14:41 ` Michael Walle
2020-05-25 9:05 ` Bartosz Golaszewski
2020-05-25 9:05 ` Bartosz Golaszewski
2020-05-25 9:05 ` Bartosz Golaszewski
2020-05-25 10:20 ` Michael Walle
2020-05-25 10:20 ` Michael Walle
2020-05-25 10:20 ` Michael Walle
2020-05-25 12:59 ` Linus Walleij
2020-05-25 12:59 ` Linus Walleij
2020-05-25 12:59 ` Linus Walleij
2020-05-25 13:25 ` Andy Shevchenko
2020-05-25 13:25 ` Andy Shevchenko
2020-05-25 13:25 ` Andy Shevchenko
2020-04-23 17:45 ` [PATCH v3 11/16] gpio: add support for the sl28cpld GPIO controller Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-27 11:45 ` Thomas Gleixner
2020-04-27 11:45 ` Thomas Gleixner
2020-04-27 11:45 ` Thomas Gleixner
2020-04-27 17:58 ` Michael Walle
2020-04-27 17:58 ` Michael Walle
2020-04-27 17:58 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 12/16] hwmon: add support for the sl28cpld hardware monitoring controller Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 13/16] arm64: dts: freescale: sl28: enable sl28cpld Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 14/16] arm64: dts: freescale: sl28: map GPIOs to input events Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 15/16] arm64: dts: freescale: sl28: enable LED support Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` [PATCH v3 16/16] arm64: dts: freescale: sl28: enable fan support Michael Walle
2020-04-23 17:45 ` Michael Walle
2020-04-23 17:45 ` Michael Walle
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