[linux-oxnas] Re: [PATCH 2/7] clocksource: Rename CLOCKSOURCE_OF_DECLARE |
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- To: Arnd Bergmann <arnd@xxxxxxxx>
- Subject: [linux-oxnas] Re: [PATCH 2/7] clocksource: Rename CLOCKSOURCE_OF_DECLARE
- From: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
- Date: Mon, 29 May 2017 10:48:09 +0200
- Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Linux ARM <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Michal Simek <monstr@xxxxxxxxx>, John Crispin <john@xxxxxxxxxxx>, Ralf Baechle <ralf@xxxxxxxxxxxxxx>, Ley Foon Tan <lftan@xxxxxxxxxx>, Vineet Gupta <vgupta@xxxxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Marc Zyngier <marc.zyngier@xxxxxxx>, Patrice Chotard <patrice.chotard@xxxxxx>, Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>, Alexandre Torgue <alexandre.torgue@xxxxxx>, Florian Fainelli <f.fainelli@xxxxxxxxx>, Ray Jui <rjui@xxxxxxxxxxxx>, Scott Branden <sbranden@xxxxxxxxxxxx>, "maintainer:BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE..." <bcm-kernel-feedback-list@xxxxxxxxxxxx>, Stephen Warren <swarren@xxxxxxxxxxxxx>, Lee Jones <lee@xxxxxxxxxx>, Eric Anholt <eric@xxxxxxxxxx>, Sören Brinkmann <soren.brinkmann@xxxxxxxxxx>, Linus Walleij <linus.walleij@xxxxxxxxxx>, Alexander Shiyan <shc_work@xxxxxxx>, Kukjin Kim <kgene@xxxxxxxxxx>, Krzysztof Kozlowski <krzk@xxxxxxxxxx>, Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Carlo Caione <carlo@xxxxxxxxxx>, Kevin Hilman <khilman@xxxxxxxxxxxx>, Liviu Dudau <liviu.dudau@xxxxxxx>, Sudeep Holla <sudeep.holla@xxxxxxx>, Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>, Matthias Brugger <matthias.bgg@xxxxxxxxx>, Heiko Stuebner <heiko@xxxxxxxxx>, Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>, Chen-Yu Tsai <wens@xxxxxxxx>, Marc Gonzalez <marc_gonzalez@xxxxxxxxxxxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxx>, Alexandre Courbot <gnurou@xxxxxxxxx>, Uwe Kleine-König <kernel@xxxxxxxxxxxxxx>, Joachim Eastwood <manabian@xxxxxxxxx>, Vladimir Zapolskiy <vz@xxxxxxxxx>, Sylvain Lemieux <slemieux.tyco@xxxxxxxxx>, Barry Song <baohua@xxxxxxxxxx>, Baruch Siach <baruch@xxxxxxxxxx>, Santosh Shilimkar <ssantosh@xxxxxxxxxx>, Neil Armstrong <narmstrong@xxxxxxxxxxxx>, Tony Prisk <linux@xxxxxxxxxxxxxxx>, John Stultz <john.stultz@xxxxxxxxxx>, Stephen Boyd <sboyd@xxxxxxxxxxxxxx>, Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx>, Richard Cochran <rcochran@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Noam Camus <noamca@xxxxxxxxxxxx>, "open list:RALINK MIPS ARCHITECTURE" <linux-mips@xxxxxxxxxxxxxx>, "moderated list:NIOS2 ARCHITECTURE" <nios2-dev@xxxxxxxxxxxxxxxxxxxxxx>, "open list:SYNOPSYS ARC ARCHITECTURE" <linux-snps-arc@xxxxxxxxxxxxxxxxxxx>, "open list:ARM/STI ARCHITECTURE" <kernel@xxxxxxxxxxx>, "moderated list:BROADCOM BCM2835 ARM ARCHITECTURE" <linux-rpi-kernel@xxxxxxxxxxxxxxxxxxx>, "moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES" <linux-samsung-soc@xxxxxxxxxxxxxxx>, "moderated list:H8/300 ARCHITECTURE" <uclinux-h8-devel@xxxxxxxxxxxxxxxxxxxx>, "open list:ARM/Amlogic Meson SoC support" <linux-amlogic@xxxxxxxxxxxxxxxxxxx>, "moderated list:ARM/Mediatek SoC support" <linux-mediatek@xxxxxxxxxxxxxxxxxxx>, "open list:ARM/Rockchip SoC support" <linux-rockchip@xxxxxxxxxxxxxxxxxxx>, "open list:TEGRA ARCHITECTURE SUPPORT" <linux-tegra@xxxxxxxxxxxxxxx>, "moderated list:ARM/OXNAS platform support" <linux-oxnas@xxxxxxxxxxxxxxxxxxx>
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On Mon, May 29, 2017 at 10:41:52AM +0200, Arnd Bergmann wrote:
> On Sat, May 27, 2017 at 11:58 AM, Daniel Lezcano
> <daniel.lezcano@xxxxxxxxxx> wrote:
> > The CLOCKSOUCE_OF_DECLARE macro is used widely for the timers to declare the
> > clocksource at early stage. However, this macro is also used to initialize
> > the clockevent if any, or the clockevent only.
> >
> > It was originally suggested to declare another macro to initialize a
> > clockevent, so in order to separate the two entities even they belong to the
> > same IP. This was not accepted because of the impact on the DT where splitting
> > a clocksource/clockevent definition does not make sense as it is a Linux
> > concept not a hardware description.
> >
> > On the other side, the clocksource has not interrupt declared while the
> > clockevent has, so it is easy from the driver to know if the description is
> > for a clockevent or a clocksource, IOW it could be implemented at the driver
> > level.
> >
> > So instead of dealing with a named clocksource macro, let's use a more generic
> > one: TIMER_OF_DECLARE.
> >
> > The patch has not functional changes.
> >
> > Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
>
> Could you either leave the old name as an alias for one release, or introduce
> the new name as an alias now for 4.13?
>
> I think that that would make it easier to merge new drivers. Otherwise this
> looks good to me,
New drivers should go through my tree, so I can catch them with the old macro
name and do the change.
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Thanks for the review.
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