linux-kernel - Re: [PATCH v2 20/25] tty: serial: samsung_tty: Use devm_ioremap

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Message-ID: <20210220191323.ugmzrtkvcxyqqolj@kozik-lap>
Date:   Sat, 20 Feb 2021 20:13:23 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Hector Martin <marcan@...can.st>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Marc Zyngier <maz@...nel.org>, Rob Herring <robh@...nel.org>,
        Arnd Bergmann <arnd@...nel.org>,
        Olof Johansson <olof@...om.net>,
        Mark Kettenis <mark.kettenis@...all.nl>,
        Tony Lindgren <tony@...mide.com>,
        Mohamed Mediouni <mohamed.mediouni@...amail.com>,
        Stan Skowronek <stan@...ellium.com>,
        Alexander Graf <graf@...zon.com>,
        Will Deacon <will@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 20/25] tty: serial: samsung_tty: Use
 devm_ioremap_resource

On Thu, Feb 18, 2021 at 11:01:21PM +0900, Hector Martin wrote:
> On 16/02/2021 03.51, Krzysztof Kozlowski wrote:
> > > Also fix a bug checking the return value, which should use IS_ERR().
> > 
> > No, no, no. We never, never combine fixing bugs with some rework.
> > However devm_ioremap() returns NULL so where is the error?
> 
> Sorry, this was a commit message mistake. The code is correct and so is the
> patch: just the NULL check is correct for the previous variant and IS_ERR is
> correct for devm_ioremap_resource. I confused myself while writing the
> commit message after the fact.
> 
> > Did you test your patches on existing platforms? If not, please mark all
> > of them as RFT on next submission, so Greg does not pick them too fast.
> 
> I unfortunately don't have any Exynos devices where I could test the code (I
> have a couple but no serial connections, and I have no idea if mailine would
> run on them). I'll mark v3 as RFT.

If you have one of Odroid boards with Exynos, then you can nicely test
Exynos. Others - depends, on board.
Anyway I can test them for you. I just want to be sure that Greg waits
for this testing.

Best regards,
Krzysztof