linux-kernel - Re: [PATCH v1 5/6] clocksource/drivers/exynos

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Z-wUD2GGMRfJwhSu@google.com>
Date: Tue, 1 Apr 2025 09:27:59 -0700
From: William McVicker <willmcvicker@...gle.com>
To: Rob Herring <robh@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Peter Griffin <peter.griffin@...aro.org>,
	André Draszik <andre.draszik@...aro.org>,
	Tudor Ambarus <tudor.ambarus@...aro.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Saravana Kannan <saravanak@...gle.com>,
	Krzysztof Kozlowski <krzk@...nel.org>, kernel-team@...roid.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	Donghoon Yu <hoony.yu@...sung.com>,
	Youngmin Nam <youngmin.nam@...sung.com>
Subject: Re: [PATCH v1 5/6] clocksource/drivers/exynos_mct: Add module support

On 03/31/2025, Rob Herring wrote:
> On Mon, Mar 31, 2025 at 04:00:27PM -0700, Will McVicker wrote:
> > From: Donghoon Yu <hoony.yu@...sung.com>
> > 
> > On Arm64 platforms the Exynos MCT driver can be built as a module. On
> > boot (and even after boot) the arch_timer is used as the clocksource and
> > tick timer. Once the MCT driver is loaded, it can be used as the wakeup
> > source for the arch_timer.
> > 
> > Signed-off-by: Donghoon Yu <hoony.yu@...sung.com>
> > Signed-off-by: Youngmin Nam <youngmin.nam@...sung.com>
> > [Original commit from https://android.googlesource.com/kernel/gs/+/8a52a8288ec7d88ff78f0b37480dbb0e9c65bbfd]
> > Signed-off-by: Will McVicker <willmcvicker@...gle.com>
> > ---
> >  drivers/clocksource/Kconfig      |  3 +-
> >  drivers/clocksource/exynos_mct.c | 47 +++++++++++++++++++++++++++-----
> >  2 files changed, 42 insertions(+), 8 deletions(-)
> 
> [...]
> 
> > +#ifdef MODULE
> > +static int exynos4_mct_probe(struct platform_device *pdev)
> > +{
> > +	struct device_node *np = pdev->dev.of_node;
> > +
> > +	if (of_machine_is_compatible("samsung,exynos4412-mct"))
> 
> Your root node compatible has "samsung,exynos4412-mct"!?
> 
> In any case, add a data ptr to of_device_id table and then use the match 
> data rather than comparing compatible strings again.

Ah yes, you're right. Thanks for the suggestion! I'll update on v2.

Regards,
Will

[...]