Linux Watchdog driver development
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Mark Brown <broonie@kernel.org>,
	Gregory CLEMENT <gregory.clement@free-electrons.com>,
	Olof Johansson <olof@lixom.net>, Arnd Bergmann <arnd@arndb.de>,
	Wim Van Sebroeck <wim@iguana.be>,
	kernel-build-reports@lists.linaro.org,
	linaro-kernel@lists.linaro.org, linux-next@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-watchdog@vger.kernel.org
Subject: Re: next-20160225 build: 2 failures 44 warnings (next-20160225)
Date: Fri, 26 Feb 2016 09:21:59 +0100	[thread overview]
Message-ID: <20160226092159.2f7ef3c7@free-electrons.com> (raw)
In-Reply-To: <56D001BE.2090209@roeck-us.net>

Guenter,

On Thu, 25 Feb 2016 23:41:50 -0800, Guenter Roeck wrote:

> > also caused by b4f596b19624 (arm64: add mvebu architecture entry) which
> > enables MVBEU on arm64, the commit was present for a little while and
> > the error cropped up but didn't get reported due to other things masking
> > it.  atomic_io_modify() is only available on ARM, I'm unsure if this
> > needs a driver change or if the driver is just specific to older
> > hardware anyway.  The code is only used in the init path accessing what
> > look to be device specific registers so I'm not 100% clear why it
> > specifically needs to be an atomic modify.
> >
> Thierry already submitted a patch yesterday to restrict the driver to only
> build on ARM. We can revisit if/when the driver is needed on ARM64.

Ah, good, thanks. It isn't clear yet whether the driver will be needed
on ARM64 for the Marvell platforms. For Armada 7K/8K, there is a SBSA
compliant watchdog. For Armada 3700, I have only briefly looked, but it
seems to be a different IP than the one used on the 32 bits SoCs.

Thanks Thierry for fixing the issue!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

  reply	other threads:[~2016-02-26  8:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <E1aYsmb-0006qb-76@optimist>
2016-02-26  3:09 ` next-20160225 build: 2 failures 44 warnings (next-20160225) Mark Brown
2016-02-26  7:41   ` Guenter Roeck
2016-02-26  8:21     ` Thomas Petazzoni [this message]
2016-02-26  8:14   ` Thomas Petazzoni
2016-02-26 12:12     ` Mark Brown
2016-02-27 14:40       ` Thomas Petazzoni

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